Effects of TiCl4 treatment on the performance of CdSe/CdS-sensitised solar cells

Rasin Ahmed; John Bell; Hongxia Wang

doi:10.1117/12.2026664

9 August 2013 Effects of TiCl₄ treatment on the performance of CdSe/CdS-sensitised solar cells

Rasin Ahmed, John Bell, Hongxia Wang

Proceedings Volume 8793, Fourth International Conference on Smart Materials and Nanotechnology in Engineering; 87930Z (2013) https://doi.org/10.1117/12.2026664
Event: Fourth International Conference on Smart Materials and Nanotechnology in Engineering, 2013, Gold Coast, Australia

Abstract

Due to their high light absorption, size dependent bandgap and low material usage and low cost of fabrication, quantum dots (QDs) are a close second to the conventionally used dyes for the dye-sensitised solar cells (DSCs). TiCl₄ treatment is one of the typical methods used to treat the anode or the working electrode of DSCs for performance improvement. In this work, the effect of TiCl₄ treatment on the performance of CdSe/CdS-sensitised solar cells was studied. The devices made without TiCl₄ treatment, perform with a moderate 1.83% efficiency under AM1.5, 1 sun illumination conditions. In contrast, TiCl₄ treated working electrodes helps to enhance the cell efficiency to 3.98%, mainly from a higher photocurrent density (15.4 mAcm^-2) and fill factor (0.51). Higher loading of the quantum dots in the working electrode and passivation effect due to TiCl₄ treatment are believed to be responsible performance improvement.

Citation Download Citation

Rasin Ahmed, John Bell, and Hongxia Wang "Effects of TiCl₄ treatment on the performance of CdSe/CdS-sensitised solar cells", Proc. SPIE 8793, Fourth International Conference on Smart Materials and Nanotechnology in Engineering, 87930Z (9 August 2013); https://doi.org/10.1117/12.2026664

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KEYWORDS

Titanium dioxide

Solar cells

Cadmium sulfide

Dye sensitized solar cells

Electrodes

Particles

Quantum dots

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