Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7701541 | Organic Electronics | 2015 | 6 Pages |
Abstract
White organic light-emitting diodes (WOLEDs) are one of the most promising technologies to realize future solid-state lighting with high power efficiency, broad and adjustable spectral coverage, and area emission for more effective and natural illumination. In this work, we report a new method of tuning the correlated color temperature (CCT) of WOLEDs via spatially controlling the degree of the micro-cavity effect in an OLED. Varying the width of thin Ag strips deposited on top of a transparent electrode leads to changes in both intensity and phase of reflection at the anode, hence significantly altering emission spectra of proposed WOLEDs. CCT of the implemented WOLEDs span a wide range, from 3000Â K to 8000Â K, demonstrating that our proposed approach helps to meet the need for lighting with various CCTs.138
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Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Jonghee Lee, Tae-Wook Koh, Hyunsu Cho, Simone Hofmann, Sebastian Reineke, Jae-Hyun Lee, Jeong-Ik Lee, Seunghyup Yoo, Karl Leo, Malte C. Gather,