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

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Jin-Wook Lee ◽  
Nam-Gyu Park
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Metal Halide ◽  
Two Dimensional ◽  
Next Generation ◽  
Light Emitting ◽  
Bright Future

AbstractThe fundamentals, promise and challenges of metal halide quasi-two-dimensional (quasi-2D) perovskites for a next generation emitter in light emitting diode devices are systematically reviewed.

Mixed Dimensional 0D/3D Perovskite Heterostructure for Efficient Green Light Emitting Diodes

2021 ◽  
Author(s):  
Lyuchao Zhuang ◽  
Lingling Zhai ◽  
Yanyong Li ◽  
Ren Hui ◽  
Mingjie Li ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Optoelectronic Devices ◽  
Green Light ◽  
Metal Halide ◽  
Next Generation ◽  
Light Emitting ◽  
Photoelectric Characteristics ◽  
Halide Perovskites

Metal halide perovskites are emerging materials for next-generation optoelectronic devices, of which all-inorganic CsPbBr3 perovskite has attracted increasing attention due to outstanding stability and excellent photoelectric characteristics compared with organic-inorganic...

Electroluminescence Spectral Imaging in Polymer Blend Light Emitting Diodes

2005 ◽  
Vol 871 ◽  
Author(s):  
Noriyuki Takada ◽  
Kiyohiko Tsutsumi ◽  
Toshihide Kamata
Keyword(s):  
Polymer Blend ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Spectral Imaging ◽  
Two Dimensional ◽  
Light Emitting ◽  
Spectroscopy System

AbstractThe spectral imaging for electroluminescence (EL) characterization in the light emitting diode (LED) based on blends of poly[2,7-(9,9-di-n-octylfluorene)] (PFO) and poly[2,7-(9,9-di-n-octylfluorene)-alt-(1,4-phenylene-((4-sec-butylphenyl)amino)-1,4-phenylene) ] (TFB) was performed using the two dimensional imaging micro-spectroscopy system. We found that EL spectral images varied with increasing applied voltages. The origin for such variation of EL spectral images will be discussed in this report.

Two dimensional metal halide perovskites: Promising candidates for light-emitting diodes

2019 ◽  
Vol 37 ◽  
pp. 97-110 ◽  
Author(s):  
Lu Zhang ◽  
Yucheng Liu ◽  
Zhou Yang ◽  
Shengzhong (Frank) Liu
Keyword(s):  
Light Emitting Diodes ◽  
Metal Halide ◽  
Two Dimensional ◽  
Light Emitting ◽  
Halide Perovskites

Interfacial engineering for highly efficient quasi-two dimensional organic–inorganic hybrid perovskite light-emitting diodes

2019 ◽  
Vol 7 (15) ◽  
pp. 4344-4349 ◽  
Author(s):  
Qing-Wei Liu ◽  
Shuai Yuan ◽  
Shuang-Qiao Sun ◽  
Wei Luo ◽  
Yi-Jie Zhang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Metal Halide ◽  
Color Purity ◽  
Two Dimensional ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Interfacial Engineering ◽  
Tunable Bandgap ◽  
Hybrid Perovskite ◽  
High Color Purity

Metal halide-based perovskites are regarded as promising candidates for light-emitting diodes (LEDs) owing to their high color purity, tunable bandgap and solution processability.

Recent progress on defect modulation for highly efficient metal halide perovskite light-emitting diodes

2021 ◽  
Vol 22 ◽  
pp. 100946
Author(s):  
Le Ma ◽  
Boning Han ◽  
Fengjuan Zhang ◽  
Leimeng Xu ◽  
Tao Fang ◽  
...  
Keyword(s):  
Recent Progress ◽  
Light Emitting Diodes ◽  
Metal Halide ◽  
Light Emitting ◽  
Highly Efficient ◽  
Metal Halide Perovskite ◽  
Halide Perovskite

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

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tsubasa Sasaki ◽  
Munehiro Hasegawa ◽  
Kaito Inagaki ◽  
Hirokazu Ito ◽  
Kazuma Suzuki ◽  
...  
Keyword(s):  
Work Function ◽  
Transport Mechanism ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Electron Injection ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Materials Used

AbstractAlthough significant progress has been made in the development of light-emitting materials for organic light-emitting diodes along with the elucidation of emission mechanisms, the electron injection/transport mechanism remains unclear, and the materials used for electron injection/transport have been basically unchanged for more than 20 years. Here, we unravelled the electron injection/transport mechanism by tuning the work function near the cathode to about 2.0 eV using a superbase. This extremely low-work function cathode allows direct electron injection into various materials, and it was found that organic materials can transport electrons independently of their molecular structure. On the basis of these findings, we have realised a simply structured blue organic light-emitting diode with an operational lifetime of more than 1,000,000 hours. Unravelling the electron injection/transport mechanism, as reported in this paper, not only greatly increases the choice of materials to be used for devices, but also allows simple device structures.

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