Investigation on the Design of High-Performance Photovoltaic Roof System With the Efficient Luminescent Solar Concentrator

In this study, we have fabricated the efficient luminescent solar concentrators (LSCs) with the chemical raw materials of B2O3-SiO2-ZnO, Cs2BIBIIIX6, and copper-based halide, and after integrating with the silicon-based solar cell, the optoelectronic conversion efficiency of this device with the area of 32 x 32 cm2 could achieve the high value as 10.89%. Due to the high absorptance and transmittance of LSCs, these devices are very suitable for the application of building integrated photovoltaic (BIPV). A simulation model of the photovoltaic roof system was constructed with PVsyst software by using the 32 x 32 cm2 LSCs as the basic unit. In addition, the performance of photovoltaic roof systems with varied string structures, assembled angles (0 degrees and 30 degrees) and operating status of LSCs are explored, these results indicate that the best string structure of the LSCs working at different operating status. Moreover, the annual power generation capacity of the photovoltaic roof system assembled at 0 degrees could achieve 22,152 kWh, which is 4.70% higher than that of the photovoltaic roof system assembled at 30 degrees. These results could give a reference for the practical construction and optimization of BIPV.