Photoelectrochemical response of thin films of α -Fe 2 O3, Zn doped α -Fe 2 O3, and Zn dots deposited on doped α -Fe 2 O3 prepared by spray pyrolysis has been studied. Samples of Zn dots were prepared using thermal evaporation method by evaporating Zn through a mesh having pore diameter of 0.7 mm. The presence of Zn-dotted islands on doped α -Fe 2 O3 surface exhibited significantly large photocurrent density as compared to other samples. An optimum thickness of Zn dots ∼230 is found to give enhanced photoresponse. The observed results are analyzed with the help of estimated values of resistivity, band gap, flatband potential, and donor density.
Kumari, S., Singh, A. P., Tripathi, C., Chauhan, D., Dass, S., Shrivastav, R., … Satsangi, V. R. (2007). Enhanced photoelectrochemical response of Zn-dotted hematite. International Journal of Photoenergy, 2007. https://doi.org/10.1155/2007/87467