Enhanced hole injection into indium-free organic red light-emitting diodes by fluorine-doping-induced texturing of a zinc oxide surface

2014 ◽  
Vol 2 (39) ◽  
pp. 8344-8349 ◽  
Author(s):  
Yong-June Choi ◽  
Su Cheol Gong ◽  
Kyung-Mun Kang ◽  
Hyung-Ho Park
Keyword(s):  
Zinc Oxide ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Hole Injection ◽  
Oxide Surface ◽  
Fluorine Doping ◽  
Light Emitting

Zinc oxide-based current spreading layer behavior on the performance of P -side-up thin-film red light emitting diodes

2018 ◽  
Vol 432 ◽  
pp. 196-201 ◽  
Author(s):  
Ming-Chun Tseng ◽  
Dong-Sing Wuu ◽  
Chi-Lu Chen ◽  
Hsin-Ying Lee ◽  
Ray-Hua Horng
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Current Spreading ◽  
Light Emitting ◽  
Layer Behavior

scholarly journals Stable and Efficient Red Perovskite Light-Emitting Diodes Based on Ca2+-Doped CsPbI3 Nanocrystals

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Wei Shen ◽  
Jianbin Zhang ◽  
Ruimin Dong ◽  
Yanfeng Chen ◽  
Liu Yang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Uv Light ◽  
Red Light ◽  
Accelerated Aging ◽  
Ambient Condition ◽  
Hole Injection ◽  
Cubic Phase ◽  
Light Emitting ◽  
Solid Film ◽  
Poor Stability

α-CsPbI3 nanocrystals (NCs) with poor stability prevent their wide applications in optoelectronic fields. Ca2+ (1.00 Å) as a new B-site doping ion can successfully boost CsPbI3 NC performance with both improved phase stability and optoelectronic properties. With a Ca2+/Pb2+ ratio of 0.40%, both phase and photoluminescence (PL) stability could be greatly enhanced. Facilitated by increased tolerance factor, the cubic phase of its solid film could be maintained after 58 days in ambient condition or 4 h accelerated aging process at 120°C. The PL stability of its solution could be preserved to 83% after 147 days in ambient condition. Even using UV light to accelerate aging, the T50 of PL could boost 1.8-folds as compared to CsPbI3 NCs. Because Ca2+ doping can dramatically decrease defect densities of films and reduce hole injection barriers, the red light-emitting diodes (LEDs) exhibited about triple enhancement for maximum the external quantum efficiency (EQE) up to 7.8% and 2.2 times enhancement for half-lifetime of LED up to 85 min. We believe it is promising to further explore high-quality CsPbI3 NC LEDs via a Ca2+-doping strategy.

scholarly journals Understanding the luminescent nature of organic radicals for efficient doublet emitters and pure-red light-emitting diodes

2020 ◽  
Vol 19 (11) ◽  
pp. 1224-1229 ◽  
Author(s):  
Alim Abdurahman ◽  
Timothy J. H. Hele ◽  
Qinying Gu ◽  
Jiangbin Zhang ◽  
Qiming Peng ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Red Light ◽  
Organic Radicals ◽  
Light Emitting

Synthesis and Characterization of Thieno[3,4-b]pyrazine Materials for Solution-processible Organic Red Light-emitting Diodes

2011 ◽  
Vol 40 (4) ◽  
pp. 417-419 ◽  
Author(s):  
Qing Li ◽  
Jiuyan Li ◽  
Lijun Deng ◽  
Qian Wang ◽  
Zhanxian Gao ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Red Light ◽  
Synthesis And Characterization ◽  
Light Emitting
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