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Three-wavelength white organic light-emitting diodes on silicon for high luminance and color gamut microdisplays

Authors
Lee, Seong JiKang, Chan-moShin, Jin-WookAhn, Dae HyunJoo, Chul WoongCho, HyunsuCho, Nam SungYoun, Hyoc MinAn, Young JaeKim, Jin SunLee, JongheeLee, Hyunkoo
Issue Date
Jan-2022
Publisher
ELSEVIER SCIENCE INC
Keywords
Organic light-emitting diode; Top-emitting OLED; White OLED; OLEDoS; OLED microdisplay
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.105, pp.132 - 137
Journal Title
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume
105
Start Page
132
End Page
137
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/145934
DOI
10.1016/j.jiec.2021.09.014
ISSN
1226-086X
Abstract
Organic light-emitting diode (OLED) microdisplays have attracted considerable attention owing to their low power consumption, rapid response, high contrast ratio, and self-luminescence. To expand the use of OLED microdisplays, high luminance and vivid color are required. Herein, we developed a highluminance, low-voltage, three-wavelength, top-emitting white OLED (WOLED) using a silicon substrate for complementary metal-oxide-semiconductor-based, full-color microdisplay applications. Optimal thickness of the emitting layer and thickness and position of the interlayer were determined to improve device performance. The device exhibited luminance of 4,200 cd/m2 at 3.3 V, and the maximum luminance reached 170,000 cd/m2 at 11.4 V. In addition, red, green, and blue color filters were deposited onto the WOLED after the thin-film encapsulation process to verify feasibility of the device for full-color microdisplay applications. The color gamut of the developed WOLED with color filters was 136% compared to sRGB. The maximum luminance and color gamut of the developed device is among the highest values obtained to date for OLED microdisplays. (c) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights
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