Nonionic surfactant assisted in-situ growth of all-inorganic perovskite film for bright pure red light-emitting devices

Article Chemistry, Multidisciplinary

Spacer Cation Alloying in Ruddlesden-Popper Perovskites for Efficient Red Light-Emitting Diodes with Precisely Tunable Wavelengths

Jian Qing et al.

Summary: A new method is employed in this study to achieve efficient red light-emitting diodes with tunable emission wavelengths in perovskite materials, reaching peak efficiencies of 11.5%.

ADVANCED MATERIALS (2021)

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Review Materials Science, Multidisciplinary

Halide Perovskite Light-Emitting Diode Technologies

Kangyu Ji et al.

Summary: Halide perovskites have shown remarkable optoelectronic properties in next-generation solid-state lighting and displays, particularly in LEDs with high external quantum efficiencies. Challenges related to device stability and material toxicity are being addressed, while there is potential for white light emission and lasing applications using perovskite materials in the future.

ADVANCED OPTICAL MATERIALS (2021)

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Review Optics

High-performance quasi-2D perovskite light-emitting diodes: from materials to devices

Li Zhang et al.

Summary: Quasi-2D perovskites have superior semiconducting properties and outstanding optical characteristics due to their structural characteristics. The inherent quantum-well structure gives them a large exciton binding energy, resulting in high PLQY.

LIGHT-SCIENCE & APPLICATIONS (2021)

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Editorial Material Optics

Quasi-two-dimensional perovskite light emitting diodes for bright future

Jin-Wook Lee et al.

Summary: The article systematically reviews the fundamentals, promise, and challenges of metal halide quasi-two-dimensional perovskites as a next-generation emitter in light emitting diode devices.

LIGHT-SCIENCE & APPLICATIONS (2021)

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Article Chemistry, Multidisciplinary

Interfacial Nucleation Seeding for Electroluminescent Manipulation in Blue Perovskite Light-Emitting Diodes

Yang Shen et al.

Summary: This study introduces a simple device architecture to achieve efficient blue PeLEDs by manipulating perovskite crystallization nucleation at interfaces, leading to highly compact perovskite nanocrystal assemblies. This strategy significantly improves the external quantum efficiency (EQE) of blue PeLEDs and enhances operational stability.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Perovskite Anion Exchange: A Microdynamics Model and a Polar Adsorption Strategy for Precise Control of Luminescence Color

Yihui Zhou et al.

Summary: Inorganic perovskite quantum dots have natural advantages in LEDs due to high color purity and tunability. A microdynamics model was constructed for anion exchange dominated by vacancies, revealing the role of polar solvent in reducing the surface energy barrier of anions. A method for in situ anion exchange channels using polar solvent was proposed, leading to precise control and regulation of the red-light spectrum.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Minimizing Optical Energy Losses for Long-Lifetime Perovskite Light-Emitting Diodes

Yong-Chun Ye et al.

Summary: This study proposes a synergetic device architecture for high efficiency and long lifetime PeLEDs by improving the perovskite emitter and light outcoupling structure. Enhanced light extraction reduces optical energy losses and improves the stability of the device during operation.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Physical

Pure Red Light-Emitting Diodes Based on Quantum Confined Quasi-Two-Dimensional Perovskites with Cospacer Cations

Lvpeng Yang et al.

Summary: This study successfully fabricates efficient and spectrally stable pure-red PeLEDs based on quasi-2D perovskites by controlling the ratio of PEA and NMA cospacer, achieving a pure-red electroluminescence with high external quantum efficiency and maximum brightness.

ACS ENERGY LETTERS (2021)

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Article Nanoscience & Nanotechnology