Premium
62‐3: Design of High‐Performance Tandem Blue Devices for Quantum‐Dot OLED Display
Author(s) -
Wang Linlin,
You Juanjuan,
Wu Chang-Yen,
Yan Guang,
Shen Yongqi,
Bo Bin,
Song Wenfeng,
Sun Li,
Quan Wei,
Luo Chengyuan,
Yu Donghui,
Li Wei,
Huang Wei,
Yuan Guangcai,
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.14023
Subject(s) - tandem , oled , electroluminescence , optoelectronics , materials science , stack (abstract data type) , fluorescence , layer (electronics) , optics , nanotechnology , physics , computer science , composite material , programming language
Highly efficient tandem blue OLEDs based on fluorescent materials were developed for quantum dot OLED applications. We optimize the optical micro‐cavity structure for maximal efficiency, and the dependence of luminescence on the thickness uniformity is theoretically and experimentally confirmed with two different type of blue emitters. We also demonstrate that the selection of charge generation layer (CGL) and electrontransporting material adjacent to CGL have significant impact on the electroluminescence performance of the tandem blue OLEDs. Here, a two‐stack tandem blue OLED achieves a current efficiency of 13.3 cd/A with a CIE coordinate of (0.137, 0.047) and a blue index (BI) of 287, which is approximately 1.7 times higher than that of single unit.