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Maximal light-energy transfer through a dielectric/metal-layered electrode on a photoactive device

Authors
Kim, Kyoung-HoPark, Q-Han
Issue Date
27-1월-2014
Publisher
OPTICAL SOC AMER
Citation
OPTICS EXPRESS, v.22, no.2, pp.1964 - 1971
Indexed
SCIE
SCOPUS
Journal Title
OPTICS EXPRESS
Volume
22
Number
2
Start Page
1964
End Page
1971
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/99504
DOI
10.1364/OE.22.001963
ISSN
1094-4087
Abstract
We report the fabrication of an optimized low reflective dielectric/metal-layered electrode that provides significant electrical conductivity and light transparency in the near-infrared wavelength regime. By making the metal film thickness thick enough and choosing a proper dielectric layer with a certain thickness, we show that our suggested electrode significantly reduces the light reflection while preserving high electrical conductivity. We demonstrate our optimized electrodes present a highly conductive surface with a sheet resistance of 5.2 O/sq and a high light transmittance of near 85% in the near-infrared regime. We also apply our optimized electrode to thin-film organic photovoltaic devices and show the electrode helps in absorbing light energy inside an active layer. We believe that this simple but powerful layered electrode will pave the way for designing transparent electrodes on photoactive devices. (C) 2014 Optical Society of America
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