EXAMINING THE OPERATION OF AN INVERSELY STRUCTURED ORGANIC PHOTOVOLTAIC SYSTEM USING LAMINATED SILVER ELECTRODES.

Abstract

The research looked into the performance of an organic photovoltaic (OPV) with an inverse structure and laminated silver electrodes. The goal was to investigate the properties of the PCMB:P3HT blend used in the active layer and how they relate to device performance. The findings from UV-Visible absorption spectroscopy, which examined the optical properties of the PCMB: P3HT blend, were presented in the results. The blend had high absorption between 584.55 and 623.33 nm and low absorption in the red and near-infrared regions of the spectrum. The transmittance spectra revealed low transmittance, especially between 400 and 635 nm. The absorption and extinction coefficients of the blended material were calculated and analysed. The absorption coefficient increased between 400 and 635 nm, while the extinction coefficient peaked at 617.81 nm. The optical energy bandgap of the blend was determined to be 1.94 eV. The photovoltaic characteristics of the solar cell were assessed using I-V and P-V measurements. The key parameters obtained were open-circuit voltage, short-circuit current, voltage at maximum power point, and current at maximum power point. The fill factor and efficiency of the solar cell were calculated to be approximately 0.6462 and 0.6989%, respectively. The research helps to better understand the performance characteristics of inverse structure OPVs with laminated silver electrodes. Further investigation and optimization of the device structure and materials may improve the fill factor and efficiency, thereby improving the performance and adoption of organic photovoltaics in renewable energy applications.