Analysis of Photovoltaic Parameters For Hot-compressed ZnO Based DSSC Under Illumination and Dark Condition

The prime aim of this work is to investigate the performance of ZnO-based flexible Dye-sensitized solar cell (DSSC) prepared using the hot compress method by analyzing a few key photovoltaic parameters. Photoelectrodes of the cell has been compressed at various temperature (room temperature-110°C) as a postdeposition treatment to improve the surface quality as well as the overall performance. The maximum efficiency has been achieved for the cell under illumination was 2.63 % which has been prepared using 130 MPa compression at 70°c. The electrical conduction mechanisms of the prepared cell under dark conditions were studied at low biasing voltages. The values of the series resistance, shunt resistance, ideality factors, and barrier heights were calculated from the measured dark current-voltage (I-V) data. The series and shunt resistance under dark and illumination conditions exhibit different values but follow the same trend. The photovoltaic performance data is competent with the series and shunt resistance data under dark and illuminated conditions.