Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1265085 | Organic Electronics | 2009 | 4 Pages |
Abstract
Small molecule based white organic light-emitting diodes were fabricated by using an alignment free mask patterning method. A phosphorescent red/green emitting layer was patterned by a metal mask without any alignment and a blue phosphorescent emitting layer was commonly deposited on the patterned red/green emitting layer. A white emission could be obtained due to separate emission of red/green and blue emitting layers. A maximum current efficiency of 30.7 cd/A and a current efficiency of 26.0 cd/A at 1000 cd/m2 were obtained with a color coordinate of (0.39, 0.45). In addition, there was little change of emission spectrum according to luminance because of balanced red/green and blue emissions.
Keywords
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Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Kyoung Soo Yook, Soon Ok Jeon, Chul Woong Joo, Jun Yeob Lee,