Enhanced photovoltaic performance of back-illuminated dye-sensitized solar cell based on TiO2 nanoparticle/nanowire composite film in cobalt redox system
By Kyung-Won Lee and Myoung Kim and Ju-Mi Kim and Jeum Jong Kim and In-Hwan Lee
Published in Journal of Alloys and Compounds
NULL
2016
Abstract
In this study, we explore the use of various ratios of TiO2 nanoparticle (NP)/nanowire (NW) composite films in back-illuminated dye-sensitized solar cells (DSSCs) based on cobalt redox couples. TiO2 \NPs\ provided sufficient surface areas for dye adsorption and TiO2 \NWs\ helped efficient charge transport in NP/NW composite film. Furthermore, incorporation of \NWs\ in TiO2 film makes it more porous, relaxing the limited mass transport of cobalt redox ions. As a result, \DSSCs\ with proper weight percentage of \NW\ incorporated TiO2 NP/NW composite film showed a superior photovoltaic performance to \DSSCs\ with pure TiO2 \NPs\ film.
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