Renuka A. Pawar, Shivanand B. Teli, Sandip S. Patil, Kalyanrao M. Garadkar
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Nanostructured TiO2 sensitized with CuS quantum dots for solar energy conversion
The present paper contains the preparation of QDs sensitized on TiO2 thin film as a photoanode for solar cell applications. The photoanode is developed by copper sulfide quantum dots (CuS QDs) on TiO2 thin films using the successive ionic layer adsorption and reaction (SILAR). CuS QDs act as sensitizer because of its strong visible light absorption. Fabrication process comprises sensitizing CuS QDs on the surface of TiO2 thin films controlled by 5 and 10 SILAR cycles. XRD study indicates the crystallite size of TiO2/CuS QDs thin films is 11.6 and 13.7 nm for 5 and 10 cycles (cys), respectively. The outcome of UV-DRS and photoluminescence indicates the enhanced light absorption, reduction in bandgap and suppression of electron–hole pair recombination. The HR-TEM image revealed that the diameter of the TiO2 is 10 nm and surroundings core-like CuS particles are observed. The TiO2/CuS QDs (10 cys) configuration showed a better photoelectrochemical efficiency of 2.55% at 30 mW cm−2 light intensity.
期刊介绍：
Research on Chemical Intermediates publishes current research articles and concise dynamic reviews on the properties, structures and reactivities of intermediate species in all the various domains of chemistry.
The journal also contains articles in related disciplines such as spectroscopy, molecular biology and biochemistry, atmospheric and environmental sciences, catalysis, photochemistry and photophysics. In addition, special issues dedicated to specific topics in the field are regularly published.
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