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Enhancement of electrical property by oxygen doping to copper phthalocyanine in inverted top emitting organic light emitting diodes SCIE SCOPUS

Title
Enhancement of electrical property by oxygen doping to copper phthalocyanine in inverted top emitting organic light emitting diodes
Authors
Hong, KKim, KLee, JL
Date Issued
2009-11-23
Publisher
AMER INST PHYSICS
Abstract
We reported the evidence of oxygen doping to copper-phthalocyanine (CuPc) by O(2)-plasma treatment to inverted top-emitting organic light-emitting diodes (ITOLEDs). In situ synchrotron-radiation photoelectron spectroscopy results showed that a new Cu-O bond appeared and the energy difference between the highest-occupied molecular orbital and E(F) is lowered by 0.15 eV after plasma treatment. The oxygen ions chemically interacted with Cu atoms and transferred charges to the CuPc. Thus the hole injection barrier was lowered, enhancing the electroluminescent property of ITOLEDs.
URI
https://oasis.postech.ac.kr/handle/2014.oak/9664
DOI
10.1063/1.3266856
ISSN
0003-6951
Article Type
Article
Citation
APPLIED PHYSICS LETTERS, vol. 95, no. 21, page. 213307 - 213307, 2009-11-23
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이종람LEE, JONG LAM
Dept of Materials Science & Enginrg
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