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P‐179: Enhanced Light Extraction from Organic Light‐Emitting Diodes using a Quasi‐periodic Nanostructure
Author(s) -
Lee Ju Sung,
Shim Yong Sub,
Park Chan Hyuk,
Hwang Ha,
Kim Jae Geun,
Joo Chul Woong,
Sung Woo Jin,
Lee Jonghee,
Park Young Wook,
Ju Byeong-Kwon
Publication year - 2017
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.12015
Subject(s) - materials science , nanostructure , reactive ion etching , oled , optoelectronics , black silicon , etching (microfabrication) , diode , light emitting diode , refractive index , lithography , interference (communication) , silicon , optics , nanotechnology , physics , engineering , layer (electronics) , electrical engineering , channel (broadcasting)
Here, we fabricate organic light‐emitting diodes (OLEDs) with quasi‐periodic nanostructure (QPS) processed both by laser interference lithography (LIL) and reactive ion etching (RIE). The LIL process is used for forming periodic pattern, and on the periodic pattern, the RIE process is supplemented for adding random property. The resulting quasi‐periodic nanostructure is composed of the silicon dioxide (SiO 2 ) having low refractive index, and we were able to obtain enhanced light extraction characteristics of OLEDs in all viewing angle without any spectrum distortion problem, by utilizing each optical advantage of periodic and random structure.