In-Well Ionization from Monolayer Quantum Dots for Non-Carrier-Injection Electroluminescence

Article Chemistry, Multidisciplinary

Bright and Stable Quantum Dot Light-Emitting Diodes

Taesoo Lee et al.

Summary: This study demonstrates bright and stable QLEDs on a Si substrate, achieving high brightness, efficiency, and stability through tailored interface and optimized device structure, pushing the development and application of QLEDs.

ADVANCED MATERIALS (2022)

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Article Engineering, Electrical & Electronic

Achieving Wide Operating Voltage Windows in Non-Carrier Injection Micro-LEDs for Enhancing Luminance Robustness

Peiqi Chen et al.

Summary: A new mode of operation for Micro-LED chips, NEC and NCI, has been proposed in this study to enhance luminance robustness through operating voltage windows, with optimizations made to the crucial insulating layer. The working mechanisms related to the existence of operating voltage windows are discussed.

IEEE TRANSACTIONS ON ELECTRON DEVICES (2022)

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Article Multidisciplinary Sciences

Injection-free multiwavelength electroluminescence devices based on monolayer semiconductors driven by an alternating field

Jiabin Feng et al.

Summary: This article introduces a novel approach for current injection in electroluminescent devices using the large exciton binding energies in 2D materials to generate excitons through an alternating electric field without the need for metal contacts. The authors demonstrate high conversion efficiency at room temperature and the ability to operate at multiple wavelengths.

SCIENCE ADVANCES (2022)

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Article Chemistry, Multidisciplinary

Working Mechanisms of Nanoscale Light-Emitting Diodes Operating in Non-Electrical Contact and Non-Carrier Injection Mode: Modeling and Simulation

Wenhao Li et al.

Summary: This study utilizes finite element simulation to investigate the working mechanisms of nano-LEDs operating in the NEC&NCI mode. The energy band variation, carrier concentration redistribution, emission rate, emission spectrum, and current-voltage characteristics are studied, while the impact of insulating layer thickness on device performance is also demonstrated.

NANOMATERIALS (2022)

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Article Chemistry, Multidisciplinary

Theoretical Study of LED Operating in Noncarrier Injection Mode

Chaoxing Wu et al.

Summary: In this work, a theoretical model of the relationship between Non-carrier injection (NCI)-LED current and time-varying voltage is constructed, and the real-time current is derived based on this model. Key parameters that can improve device performance are discussed. This study provides important guidance for the rational design of NCI-LEDs.

NANOMATERIALS (2022)

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Article Chemistry, Physical

Emerging Nanopixel Light-Emitting Displays: Significance, Challenges, and Prospects

Chaoxing Wu et al.

Summary: The article introduces the concept of future display technology - nanopixel light-emitting displays, analyzes the core component of nanolight-emitting diodes, provides a roadmap for material design to achieve this technology, and recommends nanopixel-level drive approaches.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2021)

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Article Nanoscience & Nanotechnology

Color-Tunable Alternating-Current Quantum Dot Light-Emitting Devices

Ting Wang et al.

Summary: The study presents a novel structure to construct a real AC quantum dot light-emitting device that can achieve simultaneous electroluminescence of each pixel. By employing a bilayer emissive layer composed of red and green quantum dots, the emission color of the AC QLED can be tuned by both the polarity and amplitude of the driving voltage.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Review Chemistry, Multidisciplinary

Strategies Toward Efficient Blue Perovskite Light-Emitting Diodes

Zhenwei Ren et al.

Summary: This review discusses the progress made in blue perovskite light-emitting diodes (PeLEDs) and describes strategies for optimizing the optical and electrical properties of perovskites. It focuses on key issues such as carrier transport enhancement and trap reduction in perovskite nanocrystals, as well as energy transfer and emission efficiency improvement in quasi-2D perovskites. The review also briefly introduces strategies for efficient 3D mixed-halide perovskite and lead-free perovskite blue LEDs, as well as other methods to boost blue PeLED performances.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Optics

Alternating current electroluminescence from GaN-based nanorod light-emitting diodes

Kun Wang et al.

Summary: In this study, GaN-based nanorod LEDs were utilized to fabricate AC-driven nano-EL devices, including single-dielectric AC-nLED and double-dielectric AC-nLED configurations, with different frequency responses in electrical and optical characteristics. The alternative device configuration is expected to be applied in nano-photonic systems and nano-pixel light-emitting displays.

OPTICS AND LASER TECHNOLOGY (2021)

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Review Multidisciplinary Sciences

Semiconductor quantum dots: Technological progress and future challenges

F. Pelayo Garcia de Arquer et al.

Summary: This article explores the distinctive behavior of electrons in quantum-confined semiconductor nanostructures and their impact on material properties, specifically focusing on the potential applications of zero-dimensional semiconductor quantum dots in optics and materials science.

SCIENCE (2021)

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Review Engineering, Electrical & Electronic

Colloidal quantum dot electronics

Mengxia Liu et al.

Summary: The article reviews the development of colloidal quantum dot electronics, focusing on the role of surface chemistry in suppressing non-radiative processes, controlling light-matter interactions, and regulating carrier transport properties. It also highlights the prospects of new classes of colloidal quantum dots and superlattices for emerging applications.

NATURE ELECTRONICS (2021)

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Article Engineering, Electrical & Electronic

Light-Pulse Splitting From Nano-Light-Emitting Diodes Operating in Noncarrier Injection Mode

Kun Wang et al.

Summary: The study demonstrates that LEDs operating in the Noncarrier Injection mode can split a single light pulse into multiple pulses with small widths using combined signals. Theoretical equations and experimental evidence are provided to explain and validate this light-pulse splitting phenomenon, offering insights into the working mechanisms of NCI mode and its potential applications in advanced light-pulse technology.

IEEE ELECTRON DEVICE LETTERS (2021)

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Article Multidisciplinary Sciences