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P‐191: Dielectric‐Metal‐Dielectric Structure and Its Application as Top Cathode in Highly Efficient Top‐Emitting WOLEDs
Author(s) -
Huang Qingyu,
Liu Xiaoyun,
Yan Huajie,
Jiao Zhiqiang,
Yang Jin,
Yuan Guangcai
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.13347
Subject(s) - cathode , oled , optoelectronics , materials science , dielectric , diode , fabrication , stack (abstract data type) , brightness , light emitting diode , nanotechnology , optics , layer (electronics) , chemistry , computer science , medicine , alternative medicine , physics , pathology , programming language
Top emitting white organic light emitting diodes (WOLEDs) hold great promise for high brightness and high resolution active matrix OLED displays. One key challenge of high‐performance top emitting WOLEDs is the availability of top electrodes with superior optical, electrical properties. Herein, we demonstrate the application of the dielectric/metal/dielectric structure consisting of a titanium dioxide WO 3 /Ag/WO 3 stack as the transparent top cathode on organic light‐emitting diodes (OLEDs). Better performance than that of the normally used semi‐transparent Mg:Ag cathode was obtain from the top emitting WOLEDs with the DMD cathode. Moreover, DMD device not only show bright emission similar to that of the IZO cathode device, but also enduring no damage in the device fabrication.