PREPARATION AND CHARACTERIZATION OF ZNTE/CDSE SOLAR-CELLS

All thin film solar cells were prepared and investigated by using n-CdSe in conjunction with p-ZnTe. Both the layers were deposited by hot wall vacuum evaporation technique. The devices thus produced were characterized by I-V, C-V and spectral response measurements. The open circuit voltage, the short circuit current and the fill factor were obtained as 450-575 mV, 7-11 mA/cm-2 and 0.30 respectively. The width of the depletion layer and the diffusion potential were calculated to be 0.25 μm and 1.4-1.6 V respectively. Surface photovoltage measurements indicated the diffusion length to be ∼0.1 μm. The photovoltaic performances of the cells produced above were observed to depend critically on the evaporation conditions of both the layers. © 1990.