High-efficiency red light-emitting diodes based on polyfluorene copolymers with extremely low content of 4,7-di-2-thienyl-2,1,3-benzothiadiazole-comparative studies of intrachain and interchain interaction

2005 ◽  
Vol 87 (26) ◽  
pp. 261103 ◽  
Author(s):  
Jie Luo ◽  
Junbiao Peng ◽  
Yong Cao ◽  
Qiong Hou
Keyword(s):  
Comparative Studies ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Interchain Interaction ◽  
Light Emitting

scholarly journals High-efficiency CdSe/CdS nanorod–based red light–emitting diodes

2019 ◽  
Vol 27 (6) ◽  
pp. 7935 ◽  
Author(s):  
Yanbin Zhang ◽  
Fengjuan Zhang ◽  
Hongzhe Wang ◽  
Lei Wang ◽  
Fangfang Wang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Light Emitting

High-Efficiency Red Light-Emitting Diodes Based on Multiple Quantum Wells of Phenylbutylammonium-Cesium Lead Iodide Perovskites

ACS Photonics ◽  
2019 ◽  
Vol 6 (3) ◽  
pp. 587-594 ◽  
Author(s):  
Zhuofei He ◽  
Yang Liu ◽  
Zhaoliang Yang ◽  
Jing Li ◽  
Jieyuan Cui ◽  
...  
Keyword(s):  
Quantum Wells ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Lead Iodide ◽  
Light Emitting

scholarly journals Color-pure red light-emitting diodes based on two-dimensional lead-free perovskites

2020 ◽  
Vol 6 (42) ◽  
pp. eabb0253
Author(s):  
Fanglong Yuan ◽  
Xiaopeng Zheng ◽  
Andrew Johnston ◽  
Ya-Kun Wang ◽  
Chun Zhou ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Crystallization Rate ◽  
Lead Free ◽  
Forming Process ◽  
Information Display ◽  
Light Emitting ◽  
Wide Color Gamut ◽  
Display Technology

It remains a central challenge to the information display community to develop red light-emitting diodes (LEDs) that meet demanding color coordinate requirements for wide color gamut displays. Here, we report high-efficiency, lead-free (PEA)2SnI4 perovskite LEDs (PeLEDs) with color coordinates (0.708, 0.292) that fulfill the Rec. 2100 specification for red emitters. Using valeric acid (VA)—which we show to be strongly coordinated to Sn2+—we slow the crystallization rate of the perovskite, improving the film morphology. The incorporation of VA also protects tin from undesired oxidation during the film-forming process. The improved films and the reduced Sn4+ content enable PeLEDs with an external quantum efficiency of 5% and an operating half-life exceeding 15 hours at an initial brightness of 20 cd/m2. This work illustrates the potential of Cd- and Pb-free PeLEDs for display technology.

High-efficiency deep-red quantum-dot light-emitting diodes with type-II CdSe/CdTe core/shell quantum dots as emissive layers

2016 ◽  
Vol 4 (30) ◽  
pp. 7223-7229 ◽  
Author(s):  
Qingli Lin ◽  
Bin Song ◽  
Hongzhe Wang ◽  
Fengjuan Zhang ◽  
Fei Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Core Shell ◽  
Cdse Quantum Dots ◽  
Type Ii ◽  
Light Emitting ◽  
Cdte Core

Highly efficient deep-red light-emitting diodes (LEDs) fabricated by using type-II CdTe/CdSe quantum dots.

High-Efficiency InGaN/GaN Dot-in-a-Wire Red Light-Emitting Diodes

2012 ◽  
Vol 24 (4) ◽  
pp. 321-323 ◽  
Author(s):  
Hieu Pham Trung Nguyen ◽  
Shaofei Zhang ◽  
Kai Cui ◽  
Andreas Korinek ◽  
Gianluigi A. Botton ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Red Light ◽  
Light Emitting

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

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

2021 ◽  
Vol 15 (3) ◽  
pp. 208-215 ◽  
Author(s):  
Soon Ok Jeon ◽  
Kyung Hyung Lee ◽  
Jong Soo Kim ◽  
Soo-Ghang Ihn ◽  
Yeon Sook Chung ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Long Lifetime
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