Abstract
The study deals with the sensitization of the porous SnO2 films deposited on fluorine-doped tin oxide with nanocrystalline Sb2Se3. The sensitization was achieved for three different sensitization times employing chemical solution deposition with antimony chloride and sodium selenosulphate as precursors for Sb3+ and Se2−, respectively. The unsensitized and sensitized photoelectrodes were characterized using X-ray diffractometry, scanning electron microscopy and diffused reflectance spectroscopy. The solar cells fabricated using three different photoelectrodes were characterized for their photovoltaic performance using the photocurrent density versus photovoltage curves. The study revealed that sensitization time significantly influences the photovoltaic parameters namely, short circuit current density (J sc), open circuit voltage (V oc) and fill factor (FF) and hence the photovoltaic efficiency (η).
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