High efficiency quantum dot heterojunction solar cell using anatase (001) TiO2 nanosheets.

Etgar, Lioz; Zhang, Wei; Gabriel, Stefanie; Hickey, Stephen G; Nazeeruddin, Md K; Eychmüller, Alexander; Liu, Bin; Grätzel, Michael · Adv Mater · 2012

basic_science · Level V

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Abstract

This is the first report of using anatase TiO(2) nanosheets with exposed (001) facets in a high-efficiency PbS quantum dot/TiO(2) heterojunction solar cell. The TiO(2) nanosheets have higher conduction band, and surface energy compared to normal anatase (101) TiO(2) nanoparticles. This PbS QD/TiO(2) heterojunction solar cell produces power conversion efficiency of 4.7% which is one of the highest reported in literature.

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