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41‐4: Preparation of High Performance Top‐Emission OLED for Large Size Display
Author(s) -
Hu Chunjing,
Dai Qing,
You Juanjuan,
Cui Ying,
Zhang Yue,
Sun Li,
Song Wenfeng,
Wu Chang-Yen,
Shih Huai-Ting,
Wu Zhongyuan
Publication year - 2020
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.13939
Subject(s) - oled , materials science , optoelectronics , layer (electronics) , voltage , conductivity , window (computing) , nanotechnology , computer science , electrical engineering , engineering , chemistry , operating system
In this paper we introduce a thermally evaporated optical regulating layer (ORL) to adjust the optical cavity length of solution top‐emission devices. ORL has high conductivity in the thickness range up to 1500 Å, which can meet the requirements of large‐sized printing OLED product process. Interface improvement layer (IIL) is further introduced to improve the carrier injection and enhance efficiency. Compared with the bottom device, the efficiency of optimized device increases by 2.0 times, while the voltage does not increase. Compared with the traditional solution top‐emission device, which has a narrow process window, the efficiency of optimized device increases by 15% and the voltage decreases by 0.8 V.