52.5: High‐Quality White Organic Light‐Emitting Diodes by Employing Rational Exciplex Allocation and Color Remedy Effect

2019 ◽  
Vol 50 (S1) ◽  
pp. 580-580
Author(s):  
Xun Tang ◽  
Xiang-Yang Liu ◽  
Zuo-Quan Jiang ◽  
Liang-Sheng Liao
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
High Quality ◽  
Light Emitting ◽  
Organic Light

High-quality all-fluorescent white organic light-emitting diodes obtained by balancing carriers with hole limit layer

2022 ◽  
Vol 123 ◽  
pp. 111917
Author(s):  
Kai Chen ◽  
Ruixia Wu ◽  
Xiaokang Li ◽  
Weiqiang Liu ◽  
Zhipeng Wei ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
High Quality ◽  
Light Emitting ◽  
Organic Light

Luminance degradation and recovery studies in Alq3 based Organic light emitting diodes

2011 ◽  
Vol 1360 ◽  
Author(s):  
K. Sudheendra Rao ◽  
Girija S. Samal ◽  
Y. N. Mohapatra
Keyword(s):  
Light Emitting Diodes ◽  
Time Windows ◽  
Organic Light Emitting Diodes ◽  
Degradation Mechanisms ◽  
High Quality ◽  
Light Emitting ◽  
Organic Light ◽  
Stress Cycles ◽  
Intrinsic Degradation ◽  
Distinguishing Features

AbstractThough organic light emitting diodes are being commercialized in many applications, issues relating to lifetime and degradation remain as fundamental concerns limiting performance. A coherent understanding of degradation mechanisms is yet to emerge. We focus on intrinsic degradation of high quality Alq3 based diodes due to electrical stressing. We monitor progressive luminance degradation and recovery by introducing well defined relaxation time windows in the current stress cycles. The method helps to clearly distinguish between recoverable and permanent degradation systematically. The voltage shift due to degradation and recovery is also monitored as a function of time. Further, we introduce a method of reconstructing the transients of the recoverable part using progressive isolated current pulses as a probe. The recovery of degradation is related to the charging and discharging of the traps in the device and our method provides a technique of measuring significant parameters of trapping through luminance transients. The origin and distinguishing features of the two types of degradation are discussed.

High-quality warm white organic electroluminescence from efficient phosphor-only emitting systems based on bipolar iridium(iii) complexes

2020 ◽  
Vol 8 (47) ◽  
pp. 16730-16735
Author(s):  
Xuming Zhuang ◽  
Helei Wang ◽  
Daren Xu ◽  
Yu Liu ◽  
Yue Wang
Keyword(s):  
Light Emitting Diodes ◽  
High Peak ◽  
Organic Light Emitting Diodes ◽  
High Quality ◽  
Organic Electroluminescence ◽  
Light Emitting ◽  
Organic Light ◽  
Color Rendering Index ◽  
Color Rendering ◽  
Very High

Warm white organic light-emitting diodes (WOLEDs) based on efficient phosphor-only emitting systems exhibit very high peak electroluminescence (EL) efficiencies of 25.0/22.5% and 71.3/59.3 lm W−1 and desirable color rendering index (CRI) of 81/90.

High-performance crystalline organic light-emitting diodes based on multi-layer high-quality crystals

2019 ◽  
Vol 64 ◽  
pp. 236-240 ◽  
Author(s):  
Xinxiao Yang ◽  
Xiao Feng ◽  
Jianhui Xin ◽  
Haibo Wang ◽  
Donghang Yan
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
High Quality ◽  
Light Emitting ◽  
Organic Light

Highly efficient crystalline organic light-emitting diodes

2018 ◽  
Vol 6 (33) ◽  
pp. 8879-8884 ◽  
Author(s):  
Xinxiao Yang ◽  
Xiao Feng ◽  
Jianhui Xin ◽  
Panlong Zhang ◽  
Haibo Wang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Organic Light Emitting Diodes ◽  
High Quality ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Highly Efficient ◽  
Organic Light

An efficient crystalline organic light-emitting diode based on high-quality crystalline heteroepitaxy films has been constructed, which exhibits high efficiency.

Organic Light Emitting Diodes - Innovative Light Sources

2019 ◽  
pp. 101-107
Author(s):  
Sergei A. Stakharny
Keyword(s):  
Light Source ◽  
Organic Light Emitting Diodes ◽  
Organic Leds ◽  
Light Sources ◽  
High Quality ◽  
Light Emitting ◽  
Organic Light ◽  
Lighting Systems ◽  
Physical Principles ◽  
Prospects Of Application

This article is a review of the new light source – organic LEDs having prospects of application in general and special lighting systems. The article describes physical principles of operation of organic LEDs, their advantages and principal differences from conventional non-organic LEDs and other light sources. Also the article devoted to contemporary achievements and prospects of development of this field in the spheres of both general and museum lighting as well as other spheres where properties of organic LEDs as high-quality light sources may be extremely useful.

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