Degradation mechanisms in organic light-emitting diodes

2001 ◽  
Author(s):  
Jun Shen ◽  
D. Wang ◽  
E. Langlois ◽  
Jie Yang
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Degradation Mechanisms ◽  
Light Emitting ◽  
Organic Light

A novel electroplex host with dual triplet exciton up-converting channels suppressing triplet exciton induced degradation mechanisms in blue organic light-emitting diodes

2021 ◽  
Author(s):  
Ju Hui Yun ◽  
Jae-Min Kim ◽  
Won Jae Chung ◽  
Jun Seop Lim ◽  
Jun Yeob Lee ◽  
...  
Keyword(s):  
Electron Transport ◽  
Light Emitting Diodes ◽  
Triplet Exciton ◽  
Organic Light Emitting Diodes ◽  
Degradation Mechanisms ◽  
Light Emitting ◽  
Type Host ◽  
Thermally Activated ◽  
Organic Light ◽  
Transport Type

A novel electroplex host with two triplet exciton up-converting channels for suppressed triplet exciton triggered degradation mechanisms was developed using an electron transport type host (n-type host) with thermally activated...

Plausible degradation mechanisms in organic light-emitting diodes

2019 ◽  
Vol 67 ◽  
pp. 222-231 ◽  
Author(s):  
Jwo-Huei Jou ◽  
You-Ting Lin ◽  
Yu-Ting Su ◽  
Wei-Chi Song ◽  
Shiv Kumar ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Degradation Mechanisms ◽  
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.

Organic Electroluminescence Displays

1997 ◽  
Vol 08 (02) ◽  
pp. 247-263
Author(s):  
Franky So ◽  
Song Shi ◽  
H. C. Lee
Keyword(s):  
World Wide ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Degradation Mechanisms ◽  
Organic Electroluminescence ◽  
Light Emitting ◽  
Organic Light ◽  
Materials Used

Recently, organic light emitting diodes have received a lot of attention in different research laboratories world-wide. Red, green and blue emitting devices are readily available. Devices with luminous efficiencies greater than 15 lm/W and lifetimes longer than 10,000 hours have been demonstrated. In this article, we will discuss the basic devices used in physics, materials used in organic light emitting diodes, device degradation mechanisms, and the opportunities of using this technology for commercial display applications.

A Numerical Device Model and Approach to Degradation Mechanisms in Organic Light Emitting Diodes

2013 ◽  
Vol 52 (4S) ◽  
pp. 04CK02 ◽  
Author(s):  
Tadahiko Hirai ◽  
Karl Weber ◽  
Jenny O'Connell ◽  
Mark Bown ◽  
Kazunori Ueno
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Degradation Mechanisms ◽  
Light Emitting ◽  
Device Model ◽  
Organic Light ◽  
Numerical Device
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