Study of thermal losses in bifacial solar cells due to various spectral albedoes

An optics-based thermal model was developed to assess the spectral heating and thermal losses in industrial standard solar cells due to albedo. On average, bifacial silicon-heterojunction (B-SHJ) showed a power gain of 26.5% relative to monofacial heterojunction (M-SHJ) and 56.7% relative to monofacial BSF cells considered. However, heat content in B-SHJ was also found to be highest for all spectral albedos, i.e. thermal gain was 14% relative to monofacial-BSF and 4% more relative to M-SHJ. The results demonstrated that thermal losses in bifacial solar cells has a strong dependence on spectral albedo and should therefore be considered for accurate energy yield analysis.