INFLUENCE OF CdSe QUANTUM DOTS THICKNESS ON THE EFFICIENCY OF THE QUANTUM DOTS SOLAR CELLS
HA THANH TUNG *
Faculty of Physics, Dong Thap University, Dong Thap Province, Vietnam
*Author to whom correspondence should be addressed.
Abstract
In this study, we have prepared the quantum dots solar cells based on the TiO2/CdS/CdSe/ZnS photoanodes with the changed CdSe quantum dots thickness. The results indicate that the highest performance efficiency obtained correspond to the CdSe quantum dots thickness of 3 layers (prepared by the chemical bath deposition). In addition, we also investigated the effect of the CdSe thickness on the recombination resistance, the chemical capacitance of the performance quantum dots solar cells through the electrochemical impedence spectroscopy
Keywords: Recombination, solar cells, quantum dots