Employment of gold-coated silver nanowires as transparent conductive electrode for organic light emitting diodes
- Authors
- Kim, S[Kim, Sunho]; Kim, B[Kim, Bongsung]; Im, I[Im, Inseob]; Kim, D[Kim, Dongjae]; Lee, H[Lee, Haeseong]; Nam, J[Nam, Jaewook]; Chung, HK[Chung, Ho Kyoon]; Lee, HJ[Lee, Hoo-Jeong]; Cho, SM[Cho, Sung Min]
- Issue Date
- 25-Aug-2017
- Publisher
- IOP PUBLISHING LTD
- Keywords
- silver nanowires; work function; transparent conductive electrode; OLED
- Citation
- NANOTECHNOLOGY, v.28, no.34
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOTECHNOLOGY
- Volume
- 28
- Number
- 34
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/27803
- DOI
- 10.1088/1361-6528/aa7ba0
- ISSN
- 0957-4484
- Abstract
- This study proposes a simple method of Au coating on silver nanowires (Ag NWs) transparent conductive films as the anode of organic light emitting diodes (OLED) to increase the work function of the film and thus enhance hole transport. We carefully engineer the process conditions (pretreatment, solution concentrations, and coating number) of the coating using a diluted HAuCl4 solution on the Ag NWs film to minimize etching damage on Ag NWs accompanying the galvanic replacement reaction. Ultraviolet photoelectron spectroscopy and Kelvin probe force microscopy show work function increase of Ag NWs upon Au coating. OLED devices based on Au-coated Ag NWs show a lower turn-on voltage and higher luminance, compared with pristine Ag NWs device. Although the Ag NWs device displays poor efficiencies in the low luminance range due to a high leakage, some of the Au-coated Ag NWs devices showed efficiencies higher than those of the ITO device in a high luminance.
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Collections - Research & Business Foundation > Research & Business Foundation > 1. Journal Articles
- Engineering > School of Chemical Engineering > 1. Journal Articles
- Engineering > Chemical Engineering > 1. Journal Articles
- Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
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