Comprehensive Modelling for Analyzing the Power Conversion Efficiency of Polycrystalline Silicon Photovoltaic Device under Indoor Operating Conditions

Recently, most of the studies were mainly focused on the variation between outdoor solar spectral irradiance and standard AM1.5G spectrum, as well as their effects towards the performances of different PV technologies. Interestingly, limited studies have been conducted to study the effect of artificial lighting on the power conversion efficiency of the photovoltaic (PV) device. The spectral irradiance produced by indoor lighting differs significantly as compared to the that of standard AM1.5G spectrum, which inevitably leads to different performances of the PV under standard test conditions and under artificial lighting exposure. In this study, the performance modelling has been carried out based on the comprehensive method proposed by Chong et al. to predict the PCE of organic solar cell devices. From the measurement results, the spectrum of LED illumination has been compared with that of AM1.5G, in which the LED shows a relatively narrow band with significant peaks at 450 and 560 nm. Furthermore, the theoretical model has been successfully validated by comparing the simulated PCE and the measured PCE at reasonably deviations in the range of 3.0 – 23.3%.