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10.4: Leakage‐free solution organic light‐emitting diode using ternary host with single‐diode emission area up to 6×11.5 cm 2
Author(s) -
Liao Si-Yi,
Su Hsiao-Tso,
Hsiao Yung-Hung,
Chang Yu-Fan,
Chang Chiung-Wen,
Niu Mu-Chun,
Meng Hsin-Fei,
Yen Chun,
Chao Yu-Chiang,
Chang Chih-Yu,
Zan Hsiao-Wen,
Horng Sheng-Fu
Publication year - 2019
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.13402
Subject(s) - ternary operation , oled , materials science , diode , optoelectronics , reverse leakage current , coating , voltage , leakage (economics) , electrical engineering , composite material , schottky diode , layer (electronics) , computer science , economics , macroeconomics , programming language , engineering
The electrical current leakage and stability are studied for solution OLED with areas of 4.45 mm 2 , 3×3.2 cm 2 , and 6×11.5 cm 2 . All organic layers are deposited by blade coating and initial current leaking defects can be avoided by careful control of the coating conditions. The detrimental burning point caused by a local current short developed after long‐time operation can be avoided by reducing the operation voltage using ternary mixed host. Furthermore, the crystallization defect is reduced by the ternary host. For orange device the binary host is good enough. For area as large as 6 × 11.5 cm 2 the OLED no burning point after an operation over 1600 hours.