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38.1: Efficiency Enhancement of Organic Light‐Emitting Diodes on Flexible Substrate with Patterned Inverted Cone Structure
Author(s) -
Wang YiJun,
Ouyang ShiHong,
Lu JianGang,
Shieh HanPing D.
Publication year - 2015
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.10474
Subject(s) - oled , optoelectronics , materials science , electroluminescence , substrate (aquarium) , diode , fabrication , laser , femtosecond , optics , layer (electronics) , nanotechnology , medicine , oceanography , alternative medicine , physics , pathology , geology
A patterned inverted cone (PIC) structure on flexible substrate produced by focused femtosecond laser was demonstrated for the out‐coupling efficiency enhancement of electroluminescent devices. A green Organic Light‐Emitting Diode (OLED) with PIC structure on flexible substrate was employed to verify the effect of the proposed method, which exhibited a current efficiency enhancement by a factor of 2.2 at 10 mA/cm 2 without any emission spectrum altered, compared with conventional flexible OLED. The PIC structure is compatible with current device fabrication process and applicable for full color OLED display and lighting.