IEEJ Transactions on Sensors and Micromachines
Online ISSN : 1347-5525
Print ISSN : 1341-8939
ISSN-L : 1341-8939
Special Issue Paper
Silver-Nanowire/Graphene Stacked Transparent Electrodes and Its Application to Flexible Thin Film Photovoltaic Device
Miho AkasakaMasahiko NoguchiTaizo Kobayashi
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2024 Volume 144 Issue 7 Pages 158-163

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Abstract

In this study, silver nanowire covered with graphene (AgNW/Graphene) transparent conducting electrodes (TCE) were developed as a bendable TCE instead of conventionally used indium tin oxide (ITO) for flexible photovoltaic applications. CVD-grown graphene films were transferred from a Cu foil onto a spin-coated AgNW TCE. AgNW/Grapehene TCE exhibited lower electrical resistance than 10 Ω and high optical transmission approximately 80% at visible wavelengths before and after bending of 20 cycles at radius of 15 mm. Thermal tolerance of AgNW was drastically improved by protecting silver nanowires with graphene from oxidation at 300°C air annealing test. ZnMgO/Se thin film photovoltaic devices with AgNW/Graphene were successfully demonstrated by insertion of sol-gel ZnO buffer layer in order to protect AgNW/graphene from sputtering bombardment.

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© 2024 by the Institute of Electrical Engineers of Japan
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