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Surface potential behaviors of UV treated of Ag anode for high-performance T-OLED by nanotribology

Authors
Kim, Soo InOh, Hwan WonHuh, Jin WooJu, ByeongKwonLee, Chang Woo
Issue Date
1-8월-2011
Publisher
ELSEVIER SCIENCE SA
Keywords
Ag anode; Work function; Indium tin oxide (ITO); UV treatment; OLED; KPFM (Kelvin Probe Force Microscope); Nano-indenter; Nanotribology
Citation
THIN SOLID FILMS, v.519, no.20, pp.6872 - 6875
Indexed
SCIE
SCOPUS
Journal Title
THIN SOLID FILMS
Volume
519
Number
20
Start Page
6872
End Page
6875
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/111823
DOI
10.1016/j.tsf.2011.04.046
ISSN
0040-6090
Abstract
A high reflective bottom anode is essential for high-performance top-emitting organic light emitting devices (OLEDs). Ag has high reflectivity for visible light but its electronic properties are not ideal for anodes of OLEDs. Thus, we investigated the UV treatment effect of Ag film with a thin silver oxide layer at the surface for application of top-emitting OLEDs. In this study, we measured the change of potential difference between Ag film and ITO (indium tin oxide) films, according to UV treatment time and the mechanical properties by KPFM (Kelvin Probe Force Microscope) method and nano-indenter system, respectively. The KPFM and nano-indenter results show that the differences of surface potential and surface volume change according to UV treatment time. (C) 2011 Elsevier B.V. All rights reserved.
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