Highly transparent ZTO/Ag/ZTO multilayer electrode deposited by inline sputtering process for organic photovoltaic cells

Title
Highly transparent ZTO/Ag/ZTO multilayer electrode deposited by inline sputtering process for organic photovoltaic cells
Authors
조세희리나 팬디위창환이윤재임주원박동희석지수장윤희김경곤황도경변동진최원국
Keywords
ZTO/Ag/ZTO; TCO; OPV; photoconversion efficiency; electrical properties; optical absorption; organic solar cells; silver; transparent electrodes; zinc tin oxide
Issue Date
2014-08
Publisher
Physica Status Solidi. A, Applications and Materials Science
Citation
VOL 211, NO 8, 1860-1867
Abstract
Indium-free ZTO/Ag/ZTO multilayer electrodes were deposited on glass by RF sputtering of zinc tin oxide (ZTO) and pulsed DC sputtering of silver (Ag) at room temperature in the specially designed Inline sputtering system and evaluated as transparent electrode of organic photovoltaic cells (OPVs). The dependence of the electrical and optical properties of ZTO films on the O2/Ar + O2 ratio was investigated. We fabricated the ZTO/Ag/ZTO multilayer electrode with a sheet resistance of 8.38–10.18 Ω sq−1 and average transmittance of 84.4–85.5% in the visible region (λ = 380–770 nm), which is compatible with commercial indium tin oxide (ITO). As an application, organic solar cells fabricated on the ZTO/Ag/ZTO multilayer electrodes with the conventional device architecture were compared with those on commercial ITO electrodes. The bulk heterojunction OPVs fabricated on the multilayer electrodes exhibited a short-circuit current (JSC) of 7.06 mA cm−2, a fill factor (FF) of 0.62, an open-circuit voltage of (VOC) of 0.64 V, and a power-conversion efficiency of 2.80%. This indicates that ZTO/Ag/ZTO multilayer electrode is a promising electrode scheme for bulk heterojunction organic photovoltaic cells (BHJ-OPVs).
URI
http://pubs.kist.re.kr/handle/201004/48191
ISSN
18626300
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