Title: Enhancing Bi2S3 sensitised mesoporous TiO2 solar cells by co-sensitisation with Bi2S3/CdS quantum dots

Authors: Alagappan Annamalai; Kyungho Kim; Kyungeun Jung; Man-Jong Lee; Joon Mo Ahn

Addresses: Department of Advanced Technology Fusion, Konkuk University, Seoul, 143-701, South Korea ' Department of Advanced Technology Fusion, Konkuk University, Seoul, 143-701, South Korea ' Department of Advanced Technology Fusion, Konkuk University, Seoul, 143-701, South Korea ' Department of Advanced Technology Fusion, Konkuk University, Seoul, 143-701, South Korea; Division of Interdisciplinary Studies, Konkuk University, Seoul, 143-701, South Korea ' Agency for Defense Development, Yuseong, P.O. Box 35-44, Daejeon, 305-600, South Korea

Abstract: Although the Bi2S3 QDs have an ideal bandgap for the efficient light absorbers, the Bi2S3 QDs sensitised solar cells generally indicate low photovoltaic properties owing to the active photocorrosion of Bi2S3 QDs. Herein, we report the enhancement of Bi2S3 QDs sensitised solar cells using the co-sensitisation of Bi2S3 with CdS QDs. By the homogeneous covering as well as effective blocking of photocorrosion and recombination, the CdS/Bi2S3 co-sensitised solar cells showed three-fold increase in efficiency.

Keywords: Bi2S3 sensitisers; bismuth trisulphide; quantum dots; solar cells; co-sensitisation; photovoltaic properties; photocorrosion; TiO2; titanium dioxide; titania; CdS; cadmium sulphide.

DOI: 10.1504/IJNT.2016.077085

International Journal of Nanotechnology, 2016 Vol.13 No.4/5/6, pp.354 - 364

Published online: 19 Jun 2016 *

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