Enhanced photovoltaic performance of back-illuminated dye-sensitized solar cell based on TiO2 nanoparticle/nanowire composite film in cobalt redox system
By Lee, Kyung-Won; Kim, Myoung; Kim, Ju-Mi; Kim, Jeum Jong; Lee, In-Hwan
Published in Journal of Alloys and Compounds
NULL
2016
Abstract
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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