Synthesis Characterization of Copper Selenide Thin Films and Study of Photovoltaic Solar ApplicationsAuthor(s): K. C. Rathod
The photovoltaic studies on chemically deposited copper selenide thin films have been carried out to assess its suitability for use in conversion of solar energy to electrical by chemical energy. The PV cell with CuSe thin films as photoanode and sulphide-polysulphide (2M) solution as electrolyte have been constructed and investigated of the PV cell is n-Cuse???NaOH (2M) + S(2M) + Na2S(2M)???C(graphite). The photoelectrochemical cell characterization of the films is carried out by studying current–voltage characteristics in dark, capacitance–voltage in dark, barrier height measurements, power output, photo response and spectral response. The study shows that CuSe thin films are n-type conductivity. The junction ideality factor, flat band potential and barrier height was found to be 2.64, 0.620 V and 0.182 eV respectively. The study of power output characteristic shows open circuit voltage, short circuit current, fill factor, efficiency, and photoesponse lighted ideality factor were found to be 290 mV, 20 μA, 49.36 % and 0.73 %, and 2.59 respectively.