Published January 1, 2011
| Version v1
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Flexible CdS photoelectrodes for photoelectrochemical solar cell applications
- 1. TOBB Univ Econ & Technol, Micro & Nanotechnol Grad Program, Ankara, Turkey
Description
Nanocrystalline CdS thin films have been successfully deposited on mechanically flexible polyethylene terephthalate substrates via electrodeposition technique. Structural and optical properties of as-deposited and CuCl2 treated CdS thin films have been investigated using X-ray diffraction, UV-vis spectrophotometry and X-ray photoelectron spectroscopy. Both as-deposited and CuCl2-treated CdS samples have been integrated into photoelectrochemical solar cell. It has been observed that power conversion efficiency of thin films increased dramatically and reached approximately 2% after CuCl2-treatment. Electrochemical impedance spectroscopy has been used to investigate the charge transfer mechanism. Frequency dependent measurements indicated that it was possible to fit almost all as-deposited samples into one time constant model. On the other hand, mixed kinetic and diffusion model can be used to identify the charge transfer mechanism of CuCl2-treated samples.
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