Degradation mechanisms and lifetime extending strategy of phosphorescent and thermally activated delayed-fluorescence organic light-emitting diodes

Article Chemistry, Physical

Increasing the operating lifetime of green phosphorescent organic light emitting diodes by reducing charge accumulation at the interface

Yibing Wu et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2023)

Article Chemistry, Physical

Effect of substitution position of dibenzofuran-terminated robust hole-transporters on physical properties and TADF OLED performances

Shoki Abe et al.

Summary: This study investigates the performance of dibenzofuran-end-capped hole-transport layer (HTL) in phosphorescent and TADF OLEDs. The research findings reveal that T1DBFBP demonstrates excellent EQE and lifetime.

MOLECULAR SYSTEMS DESIGN & ENGINEERING (2023)

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Article Chemistry, Multidisciplinary

Robust Spirobifluorene Core Based Hole Transporters with High Mobility for Long-Life Green Phosphorescent Organic Light-Emitting Devices

Natsuo Nagamura et al.

Summary: Using a tailored high triplet energy hole transport layer is an effective way to improve the efficiency and lifetime of organic light-emitting devices. In this study, two HTL materials were developed and showed excellent performance in terms of external quantum efficiency and operational lifetime in green phosphorescent OLEDs.

CHEMISTRY-A EUROPEAN JOURNAL (2023)

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Article Nanoscience & Nanotechnology

Lifetime Enhancement and Degradation Study of Blue OLEDs Using Deuterated Materials

Jingwen Yao et al.

Summary: Significant lifetime enhancement, up to an eight-fold increase in T90, has been demonstrated in blue organic light-emitting diode (OLED) devices through the deuteration of host and hole transport materials. The deuteration effects were elucidated using laser desorption/ionization-time-of-flight (LDI-TOF) mass spectrometry, which revealed the formation of adduct species that act as electroluminescence quenchers. The kinetic isotope effect of the photodegradation reactions showed an approximate agreement with the enhancement in device lifetime with deuteration.

ACS APPLIED MATERIALS & INTERFACES (2023)

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Article Chemistry, Multidisciplinary

Four Dibenzofuran-Terminated High-Triplet-Energy Hole Transporters for High-Efficiency and Long-Life Organic Light-Emitting Devices

Hisahiro Sasabe et al.

Summary: In this study, a series of thermally and electrically stable hole-transporters were developed, which exhibited high bond dissociation energy, high glass transition temperature, and high triplet energy. These materials prolonged the stability of OLEDs and achieved an operation lifetime of 20,000-30,000 hours.

CHEMISTRY-A EUROPEAN JOURNAL (2022)

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Article Multidisciplinary Sciences

Probing polaron-induced exciton quenching in TADF based organic light-emitting diodes

Monirul Hasan et al.

Summary: This study investigates the impact of polaron-induced quenching on the efficiency roll-off in organic light-emitting diodes (OLEDs) and quantifies the contributions of singlet-polaron annihilation (SPA) and triplet-polaron annihilation (TPA). The results show that charge imbalance and singlet-triplet annihilation (STA) are the main contributing factors, while device degradation is mainly influenced by TPA. It is demonstrated that improving the charge recombination rate can reduce the effect of polaron-induced quenching and decrease the efficiency roll-off.

NATURE COMMUNICATIONS (2022)

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Article Materials Science, Multidisciplinary

Progress in the development of the display performance of AR, VR, QLED and OLED devices in recent years

Ho Jin Jang et al.

Summary: This paper discusses the key technological advancements and performance of virtual reality, augmented reality, quantum dot light-emitting diode, and organic light-emitting diode as next-generation display devices.

JOURNAL OF INFORMATION DISPLAY (2022)

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Article Optics

Exceptionally stable blue phosphorescent organic light-emitting diodes

Jinwon Sun et al.

Summary: By using new dopant and host materials, a deep blue phosphorescent organic light-emitting diode with a lifetime exceeding 1,000 hours has been successfully produced. The application of these materials results in longer device lifetimes and higher color purity.

NATURE PHOTONICS (2022)

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Article Nanoscience & Nanotechnology

Lifetime-Extending 3-(4-Phenylbenzo[4,5]thieno[3,2-d]pyrimidin-2-yl)benzonitrile Acceptor for Thermally Activated Delayed Fluorescence Emitters

Ha Lim Lee et al.

Summary: Highly efficient and long-living green TADF OLEDs were developed using benzothienopyrimidine-4-benzonitrile acceptor-derived compounds. Among the two emitters, BTPDIDCz demonstrated a high external quantum efficiency of 24.5% and 3 times longer device lifetime than the state-of-the-art green emitter, showcasing the potential of benzothienopyrimidine-4-benzonitrile as the acceptor for long lifetime in TADF emitters.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Optics

Stable pure-blue hyperfluorescence organic light-emitting diodes with high-efficiency and narrow emission

Chin-Yiu Chan et al.

Summary: This study presents pure-blue OLEDs with high efficiency, narrow emission, and good stability, showing promise for display applications. The design is based on a two-unit stacked tandem hyperfluorescence OLED with strict control of device fabrication and procedures to further improve device lifetimes.

NATURE PHOTONICS (2021)

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Article Chemistry, Multidisciplinary

Modeling Electron-Transfer Degradation of Organic Light-Emitting Devices

Yu Kyung Moon et al.

Summary: This study developed and validated a degradation model for OLEDs with thermally activated delayed fluorescence, unraveling the chemical processes in intrinsic electron-transfer degradation through electrical and spectroscopic investigations. It provides a useful foundation for improving the longevity of OLEDs by building mass balances for key species in emitting layers.

ADVANCED MATERIALS (2021)

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Article Optics

High-efficiency, long-lifetime deep-blue organic light-emitting diodes

Soon Ok Jeon et al.

Summary: By combining a new design of blue TADF materials with a triplet-exciton recycling protocol, high efficiency and long lifetime were achieved in deep-blue organic light-emitting diodes.

NATURE PHOTONICS (2021)

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Article Nanoscience & Nanotechnology

A New BODIPY Material for Pure Color and Long Lifetime Red Hyperfluorescence Organic Light-Emitting Diode

Young Hun Jung et al.

Summary: A red fluorescent material, 1,3,7,9-tetrakis(4-(tert-butyl)-phenyl)-5,5-difluoro-10-(2-methoxyphenyl)-5H-4l4,5l4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine (4tBuMB), was utilized as an emitting dopant in a thermally activated delayed fluorescence (TADF) sensitized hyperfluorescence organic light-emitting diode (HFOLED), demonstrating high photoluminescence quantum yield and device stability. The performance of the HFOLED device with 4tBuMB and 4CzTPN as the sensitizing host outperformed that with 4CzIPN, attributed to higher Forster resonance energy transfer rate and improved device lifetime.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Multidisciplinary Sciences

Unravelling the electron injection/transport mechanism in organic light-emitting diodes

Tsubasa Sasaki et al.

Summary: This study reveals the electron injection/transport mechanism in organic light-emitting diodes (OLEDs) by tuning the work function, leading to the creation of a simple structured blue OLED with a lifetime of over 1,000,000 hours. Understanding the role of electron injection and transport is crucial for optimizing device performance.

NATURE COMMUNICATIONS (2021)

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Article Materials Science, Multidisciplinary

A novel electroplex host with dual triplet exciton up-converting channels suppressing triplet exciton induced degradation mechanisms in blue organic light-emitting diodes

Ju Hui Yun et al.

Summary: A novel electroplex host with two triplet exciton up-converting channels was developed to suppress triplet exciton triggered degradation mechanisms, improving the device lifetime of deep blue phosphorescent organic light-emitting diodes (PhOLEDs). The host, with thermally activated delayed fluorescence (TADF) characteristics, generated an electroplex with a hole transport type host, resulting in an extended device lifetime compared to non-TADF natured hosts. Two reverse intersystem crossing (RISC) mechanisms through the TADF host and electroplex host were identified to suppress triplet exciton related degradation and enhance device lifetime, supported by kinetic modeling of the electroplex.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

Improved positive polaron stability of the p-type host for long lifetime in phosphorescent organic light-emitting diodes

Ji Ae Kang et al.

Summary: By enhancing the oxidation stability of the host material, the device lifetime of phosphorescent OLEDs was improved in this study. Phenyl protection of the active site increased the oxidation stability and positive polaron stability of the host, leading to an extended device lifetime compared to conventional hole-transport-type hosts. Specifically, the 2-TPhDCz host doubled the device lifetime of the phosphorescent OLEDs.

MATERIALS CHEMISTRY FRONTIERS (2021)

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Article Materials Science, Multidisciplinary

Molecular design opening two emission pathways for high efficiency and long lifetime of thermally activated delayed fluorescent organic light-emitting diodes

Ha Lim Lee et al.

Summary: High efficiency and long lifetimes of TADF OLEDs were achieved through a novel molecular design with two emission pathways, resulting in high photoluminescence quantum yield and reverse intersystem crossing rate. The TADF emitters with two acceptor chemical platforms attained over 20% external quantum efficiency and a longer lifetime compared to current state-of-the-art devices.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Materials Science, Multidisciplinary

A 9-fluorenyl substitution strategy for aromatic-imide-based TADF emitters towards efficient and stable sky blue OLEDs with nearly 30% external quantum efficiency

Quanyou Feng et al.

Summary: The study demonstrates that the 9-phenyl-9-fluorenyl substituent is superior to the tert-butyl group in constructing TADF emitters for efficient and stable blue OLEDs. OLEDs based on molecules containing 9-phenyl-9-fluorenyl substituents exhibit excellent EL performance and stability in blue OLEDs, outperforming devices with tert-butyl substituted emitters.

MATERIALS ADVANCES (2021)

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Article Materials Science, Multidisciplinary

Highly efficient and stable blue organic light-emitting diodes through the selective quenching of long-living triplet exciton of a thermally activated delayed fluorescence emitter

Won Jae Chung et al.

Summary: This study introduces a new device structure strategy for TADF OLEDs, selectively managing long-living triplet excitons to achieve high efficiency and long device lifetime. The incorporation of a triplet exciton quenching layer near the recombination zone significantly enhanced the device lifetime without efficiency loss.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Materials Science, Multidisciplinary

A pyrimidine-5-carbonitrile acceptor combined with an ortho-linked donor for long lifetime through facilitated reverse intersystem crossing in thermally activated delayed fluorescence emitters

Ji Seon Jang et al.

Summary: A new TADF emitter design combining PyCN acceptor and ortho-linked donor successfully shortened delayed fluorescence lifetime, increased reverse intersystem crossing rate close to 1.0 x 10(6) s(-1), and extended the lifetime of TADF organic light-emitting diodes.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Materials Science, Multidisciplinary

High efficiency and long lifetime orange-red thermally activated delayed fluorescent organic light emitting diodes by donor and acceptor engineering

Shantaram Kothavale et al.

Summary: Highly efficient and stable TADF emitters are needed for commercial applications, but achieving high EQE and long lifetime in a single organic molecular design is difficult, especially in long wavelength designs. Two orange-red TADF emitters, 6,7-DCNQx-DICz and 5,8-DCNQx-DICz, were designed and synthesized, with 6,7-DCNQx-DICz achieving a higher EQE of 23.9% and a lifetime of 931 hours, while 5,8-DCNQx-DICz had a lower EQE of 12.5%, but a longer lifetime of 1184 hours. The combination of DICz and DCQx units could be a promising chemical platform for future highly efficient and long lifetime orange-red TADF OLED designs.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

High-Performance Nondoped Blue Delayed Fluorescence Organic Light-Emitting Diodes Featuring Low Driving Voltage and High Brightness

Shi-Jie Zou et al.

ADVANCED SCIENCE (2020)

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Article Chemistry, Multidisciplinary

The Role of Reverse Intersystem Crossing Using a TADF-Type Acceptor Molecule on the Device Stability of Exciplex-Based Organic Light-Emitting Diodes

Thanh Ba Nguyen et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Enhanced Operational Durability of Thermally Activated Delayed Fluorescence-Based Organic Light-Emitting Diodes with a Triazine Electron Transporter

Kenta Yamaguchi et al.

CHEMISTRY-A EUROPEAN JOURNAL (2020)

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Article Nanoscience & Nanotechnology

Management of Delayed Fluorophor-Sensitized Exciton Harvesting for Stable and Efficient All-Fluorescent White Organic Light-Emitting Diodes

Feng-Ming Xie et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Nanoscience & Nanotechnology

Novel Positive Polaron Stabilizing n-Type Host for High Efficiency and Long Lifetime in Blue Phosphorescent Organic Light-Emitting Diodes

Do Sik Kim et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Multidisciplinary

Efficient and Stable Deep-Blue Fluorescent Organic Light-Emitting Diodes Employing a Sensitizer with Fast Triplet Upconversion

Dongdong Zhang et al.

ADVANCED MATERIALS (2020)

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Article Nanoscience & Nanotechnology

High Fluorescence Rate of Thermally Activated Delayed Fluorescence Emitters for Efficient and Stable Blue OLEDs

Liwu Su et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Multidisciplinary

Conformation-dependent degradation of thermally activated delayed fluorescence materials bearing cycloamino donors

Sanju Hwang et al.

COMMUNICATIONS CHEMISTRY (2020)

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Article Optics

Fast spin-flip enables efficient and stable organic electroluminescence from charge-transfer states

Lin-Song Cui et al.

NATURE PHOTONICS (2020)

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Article Chemistry, Physical

Kinetic Modeling of Transient Electroluminescence Reveals TTA as an Efficiency-Limiting Process in Exciplex-Based TADF OLEDs

Jeannine Gruene et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2020)

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Article Nanoscience & Nanotechnology

Precise Exciton Management of Quaternary Emission Layers for Highly Stable Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence

Masaki Tanaka et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Physical

Dissociative nature of C(sp2)-N(sp3) bonds of carbazole based materials via conical intersection: simple method to predict the exciton stability of host materials for blue OLEDs: a computational study

J. Vijaya Sundar et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2020)

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Article Materials Science, Multidisciplinary

Simultaneous realization of high-efficiency, low-drive voltage, and long lifetime TADF OLEDs by multifunctional hole-transporters

Takahiro Kamata et al.

JOURNAL OF MATERIALS CHEMISTRY C (2020)

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Article Chemistry, Multidisciplinary

A bipolar host based high triplet energy electroplex for an over 10 000 h lifetime in pure blue phosphorescent organic light-emitting diodes

Mina Jung et al.

MATERIALS HORIZONS (2020)

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Article Materials Science, Multidisciplinary

Highly efficient blue thermally activated delayed fluorescence organic light emitting diodes based on tercarbazole donor and boron acceptor dyads

Durai Karthik et al.

JOURNAL OF MATERIALS CHEMISTRY C (2020)

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Article Nanoscience & Nanotechnology

Effect of Carrier Balance on Device Degradation of Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence Emitters

Masaki Tanaka et al.

ADVANCED ELECTRONIC MATERIALS (2019)

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Article Chemistry, Multidisciplinary

A Series of Dibenzofuran-Based n-Type Exciplex Host Partners Realizing High-Efficiency and Stable Deep-Red Phosphorescent OLEDs

Takashi Ito et al.

CHEMISTRY-A EUROPEAN JOURNAL (2019)

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Article Chemistry, Multidisciplinary

Systematic Control of the Orientation of Organic Phosphorescent Pt Complexes in Thin Films for Increased Optical Outcoupling

Jongchan Kim et al.

ADVANCED MATERIALS (2019)

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Article Materials Science, Multidisciplinary

Spatial separation of two blue triplet emitters for improved lifetime in blue phosphorescent organic light-emitting diodes by confining excitons at the interface between two emitting layers

Si Hyun Han et al.

ORGANIC ELECTRONICS (2019)

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Article Materials Science, Multidisciplinary

Degradation mechanism of blue thermally activated delayed fluorescent organic light-emitting diodes under electrical stress

Jiho Sohn et al.

ORGANIC ELECTRONICS (2019)

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Article Materials Science, Multidisciplinary

Design of stable platinum(II) complexes exhibited various colors via auxiliary ligand and electron-donating/withdrawing groups: A theoretical investigation

Yafei Luo et al.

ORGANIC ELECTRONICS (2019)

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Article Materials Science, Multidisciplinary

Dominance of Exciton Lifetime in the Stability of Phosphorescent Dyes

Dong-Gwang Ha et al.

ADVANCED OPTICAL MATERIALS (2019)

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Article Nanoscience & Nanotechnology

Unveiling the Role of Langevin and Trap-Assisted Recombination in Long Lifespan OLEDs Employing Thermally Activated Delayed Fluorophores

Minghan Cai et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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Article Chemistry, Multidisciplinary

Lifetime extension in green thermally activated delayed fluorescent organic light-emitting diodes by increasing excited state bond dissociation energy

Ho Jung Lee et al.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2019)

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Article Materials Science, Multidisciplinary

Understanding molecular fragmentation in blue phosphorescent organic light-emitting devices

Changyeong Jeong et al.

ORGANIC ELECTRONICS (2019)

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Article Materials Science, Multidisciplinary

Electrostatic potential dispersing pyrimidine-5-carbonitrile acceptor for high efficiency and long lifetime thermally activated delayed fluorescence organic light-emitting diodes

Ji Seon Jang et al.

JOURNAL OF MATERIALS CHEMISTRY C (2019)

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Article Chemistry, Physical

Excited state C-N bond dissociation and cyclization of tri-aryl amine-based OLED materials: a theoretical investigation

J. Vijaya sundar et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2019)

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Article Materials Science, Multidisciplinary

A novel molecular design employing a backbone freezing linker for improved efficiency, sharpened emission and long lifetime in thermally activated delayed fluorescence emitters

Ji Gwang Yu et al.

JOURNAL OF MATERIALS CHEMISTRY C (2019)

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Review Chemistry, Multidisciplinary

Origin and Control of Orientation of Phosphorescent and TADF Dyes for High-Efficiency OLEDs

Kwon-Hyeon Kim et al.

ADVANCED MATERIALS (2018)

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Article Chemistry, Physical

Managing Orientation of Nitrogens in Bipyrimidine-Based Thermally Activated Delayed Fluorescent Emitters To Suppress Nonradiative Mechanisms

Hee-Jun Park et al.

CHEMISTRY OF MATERIALS (2018)

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Article Chemistry, Multidisciplinary

Phenanthridine based Ir(III) complex for blue phosphorescent organic light-emitting diodes with long-term operational stability

Myeongbee Kim et al.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2018)

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Article Chemistry, Physical

Hole trap formation in polymer light-emitting diodes under current stress

Quan Niu et al.

NATURE MATERIALS (2018)

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Article Materials Science, Multidisciplinary

Comprehensive understanding of degradation mechanism of high efficiency blue organic light-emitting diodes at the interface by hole and electron transport layer

Wook Song et al.

ORGANIC ELECTRONICS (2018)

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Article Multidisciplinary Sciences

Degradation of blue-phosphorescent organic light-emitting devices involves exciton-induced generation of polaron pair within emitting layers

Sinheui Kim et al.

NATURE COMMUNICATIONS (2018)

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Article Materials Science, Multidisciplinary

Functionalized phenylimidazole-based facial-homoleptic iridium(III) complexes and their excellent performance in blue phosphorescent organic light-emitting diodes

Youngjae Kwon et al.

JOURNAL OF MATERIALS CHEMISTRY C (2018)

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Article Materials Science, Multidisciplinary

high fluorescence rate is key for stable blue organic light-emitting diodes

Zhusen Liu et al.

JOURNAL OF MATERIALS CHEMISTRY C (2018)

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Article Multidisciplinary Sciences

Excited state engineering for efficient reverse intersystem crossing

Hiroki Noda et al.

SCIENCE ADVANCES (2018)

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Article Chemistry, Multidisciplinary

Investigation of degradation mechanism of phosphorescent and thermally activated delayed fluorescent organic light-emitting diodes through doping concentration dependence of lifetime

Wook Song et al.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2018)

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Article Chemistry, Physical

Effects of ortho-Linkages on the Molecular Stability of Organic Light-Emitting Diode Materials

Rui Wang et al.

CHEMISTRY OF MATERIALS (2018)

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Article Multidisciplinary Sciences

Unicolored phosphor-sensitized fluorescence for efficient and stable blue OLEDs

Paul Heimel et al.

NATURE COMMUNICATIONS (2018)

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Article Multidisciplinary Sciences

Efficient and stable sky-blue delayed fluorescence organic light-emitting diodes with CIEy below 0.4

Chin-Yiu Chan et al.

NATURE COMMUNICATIONS (2018)

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Article Nanoscience & Nanotechnology

Degradation Mechanisms in Blue Phosphorescent Organic Light Emitting Devices by Exciton-Polaron Interactions: Loss in Quantum Yield versus Loss in Charge Balance

Yingjie Zhang et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

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Article Physics, Applied

Transient electroluminescence on pristine and degraded phosphorescent blue OLEDs

Quan Niu et al.

JOURNAL OF APPLIED PHYSICS (2017)

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Article Chemistry, Physical

Predicting the Operational Stability of Phosphorescent OLED Host Molecules from First Principles: A Case Study

Alexandra Ya. Freidzon et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2017)

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Article Chemistry, Multidisciplinary

New Molecular Design Concurrently Providing Superior Pure Blue, Thermally Activated Delayed Fluorescence and Optical Out-Coupling Efficiencies

P. Rajamalli et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

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Article Materials Science, Multidisciplinary

Design strategy of exciplex host for extended operational lifetime

Wook Song et al.

ORGANIC ELECTRONICS (2017)

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Article Materials Science, Multidisciplinary

Degradation mechanism study and electron scattering device structure for long lifetime in blue phosphorescent organic light-emitting diodes

Wook Song et al.

ORGANIC ELECTRONICS (2017)

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Article Materials Science, Multidisciplinary

Design of bicarbazole type host materials for long-term stability in blue phosphorescent organic light-emitting diodes

Hyeong Min Kim et al.

ORGANIC ELECTRONICS (2017)

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Article Materials Science, Multidisciplinary

Design of a novel triplet exciton guiding mixed host for lifetime improvement of phosphorescent organic light-emitting diodes

Wook Song et al.

ORGANIC ELECTRONICS (2017)

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Article Materials Science, Multidisciplinary

Lifetime extension of blue phosphorescent organic light-emitting diodes by suppressing triplet-polaron annihilation using a triplet emitter doped hole transport layer

Wook Song et al.

ORGANIC ELECTRONICS (2017)

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Article Materials Science, Multidisciplinary

Chemical degradation mechanism of TAPC as hole transport layer in blue phosphorescent OLED

Shou-Cheng Dong et al.

ORGANIC ELECTRONICS (2017)

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Article Chemistry, Organic

Donor-σ-Acceptor Molecules for Green Thermally Activated Delayed Fluorescence by Spatially Approaching Spiro Conformation

Ya-Kun Wang et al.

ORGANIC LETTERS (2017)

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Article Chemistry, Multidisciplinary

The short device lifetimes of blue PhOLEDs: insights into the photostability of blue Ir(III) complexes

Denis Jacquemin et al.

CHEMICAL SCIENCE (2017)

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Article Multidisciplinary Sciences

Long-lived efficient delayed fluorescence organic light-emitting diodes using n-type hosts

Lin-Song Cui et al.

NATURE COMMUNICATIONS (2017)

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Article Multidisciplinary Sciences

Hot excited state management for long-lived blue phosphorescent organic light-emitting diodes

Jaesang Lee et al.

NATURE COMMUNICATIONS (2017)

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Article Materials Science, Multidisciplinary

A stepwise energy level doping structure for improving the lifetime of phosphorescent organic light-emitting diodes

Wook Song et al.

JOURNAL OF MATERIALS CHEMISTRY C (2017)

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Article Multidisciplinary Sciences

The Role of Charge Balance and Excited State Levels on Device Performance of Exciplex-based Phosphorescent Organic Light Emitting Diodes

Sangyeob Lee et al.

SCIENTIFIC REPORTS (2017)

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Article Chemistry, Applied

A novel pyrrolocarbazole donor for stable and highly efficient thermally activated delayed fluorescent emitters

Ji Han Kim et al.

DYES AND PIGMENTS (2017)

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Article Nanoscience & Nanotechnology

Probing the Emission Zone Length in Organic Light Emitting Diodes via Photoluminescence and Electroluminescence Degradation Analysis

Cheng Peng et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

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Article Nanoscience & Nanotechnology

Exciplex-Forming Co-Host-Based Red Phosphorescent Organic Light-Emitting Diodes with Long Operational Stability and High Efficiency

Jeong-Hwan Lee et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

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Article Chemistry, Physical

Understanding and predicting the orientation of heteroleptic phosphors in organic light-emitting materials

Matthew J. Jurow et al.

NATURE MATERIALS (2016)

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Article Nanoscience & Nanotechnology

Simultaneous Enhancement of Efficiency and Stability of Phosphorescent OLEDs Based on Efficient Forster Energy Transfer from Interface Exciplex

Dongdong Zhang et al.

ACS APPLIED MATERIALS & INTERFACES (2016)

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Article Nanoscience & Nanotechnology

Achieving Extreme Utilization of Excitons by an Efficient Sandwich-Type Emissive Layer Architecture for Reduced Efficiency Roll-Off and Improved Operational Stability in Organic Light-Emitting Diodes

Zhongbin Wu et al.

ACS APPLIED MATERIALS & INTERFACES (2016)

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Article Nanoscience & Nanotechnology

Ideal Molecular Design of Blue Thermally Activated Delayed Fluorescent Emitter for High Efficiency, Small Singlet-Triplet Energy Splitting, Low Efficiency Roll-Off, and Long Lifetime

Dong Ryun Lee et al.

ACS APPLIED MATERIALS & INTERFACES (2016)

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Article Chemistry, Physical

Effect of reverse intersystem crossing rate to suppress efficiency roll-off in organic light-emitting diodes with thermally activated delayed fluorescence emitters

Munetomo Inoue et al.

CHEMICAL PHYSICS LETTERS (2016)

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Article Chemistry, Physical

Tetradentate Pt(II) Complexes with 6-Membered Chelate Rings: A New Route for Stable and Efficient Blue Organic Light Emitting Diodes

Tyler B. Fleetham et al.

CHEMISTRY OF MATERIALS (2016)

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Article Chemistry, Physical

Effect of Substituents on the Electronic Structure and Degradation Process in Carbazole Derivatives for Blue OLED Host Materials

Minki Hong et al.

CHEMISTRY OF MATERIALS (2016)

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Article Chemistry, Physical

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