Effect of Illumination on the Photovoltaic Parameters of Al/p‐Si Diode with an Organic Interlayer Prepared by Spin Coating Method

In this study, the photovoltaic device application of bromothymol blue(btb) as an organic interlayer has been reported. after al back contact fabricationon the surface of the chemically cleaned substrate by thermal evaporation method,the organic interlayer has been grown on p‐si substrate via spin coating technique.al top contacts have been formed on this organic thin film to finalize the deviceconstructions. the different illumination intensities were exposed to the preparedsample for the enhancement in the photovoltaic properties of device. thefundamental photovoltaic parameters such as open circuit voltage (voc), shortcircuit current (isc) and output power (p) were determined for the device underdifferent illuminations. the photocurrent and the photo voltage have been increased with the increasing in illumination intensity. the dependence of thecapacitance on the voltage at high and low frequency has been also reported forthe studied device. consequently, it has been confirmed that the illuminationintensity has an important influence on the photovoltaic parameters of the device.