Journal of Basic and Applied Research International

USING Sn2-/S2- REPLACE I3-/I- REDOX COUPLE FOR QUANTUM DOT SOLAR CELLS

H. T. TUNG *

Faculty of Physics, Dong Thap University, Dong Thap province, Vietnam.

*Author to whom correspondence should be addressed.

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Abstract

In this work, we have prepared quantum dots solar cells based on sulfide/polysulfide redox couple because the I^-/I^3- electrolyte is compatible with CdS/CdSe/ZnS QDs. We have demonstrated that the CdS/CdSe/ZnS-TiO₂ photo anodes oxidized when which was immersed in the different electrolytes. Moreover, the absorption intensity of CdS/CdSe/ZnS-TiO₂ photo anodes also decreased when they were immersed in I^-/I^3- electrolyte.

Keywords: Thin film, defect states, CdSe nanocrystals, solar cell

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