Meita Asami , Maui Hino , Gan Li , Kentaroh Watanabe , Yoshiaki Nakano , Masakazu Sugiyama
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Comprehensive voltage-loss analysis and reduction of radiative recombination voltage loss in quantum-structured solar cells
Voltage-loss analysis is essential in the development of next-generation solar cells, such as perovskite, chalcopyrite, kesterite, and nano/quantum-structured solar cells. Voltage-loss analysis provides valuable insights into how the energy conversion efficiency of solar cells can be enhanced. However, a comprehensive and accurate method to evaluate the voltage loss in quantum-structured solar cells is lacking. This study establishes and demonstrates a quantitative voltage-loss analysis based on detailed balance theory. This analysis reveals the relationship between external quantum efficiency and radiative recombination voltage loss in quantum-structured solar cells. Based on the results of the analysis, we designed and fabricated a novel low-voltage loss quantum-structured solar cell. Radiative recombination in the quantum-structured solar cell was successfully suppressed by steepening the absorption edge. This voltage-loss analysis facilitates the development of next-generation solar cells.
期刊介绍:
Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.