CuO nanoleaves enhance the c-Si solar cell efficiency

摘要: Various-sized arrays of CuO nanoleaves (NLs) were fabricated on a pyramid-textured c-Si wafer. The NL/c-Si solar cells show great increase the optical absorption and reduction reflectance in 250–1250 nm wavelength range, compared to reference one. cell integrated with NLs generates graded index refraction between surface Si air, improves light utilization efficiency by increasing light-trapping effect forming resonant modes, which leads multiple scattering incident light. In addition, deposition p-type wafer can form junction generate built-in potential, is beneficial for separation photogenerated electrons holes, leading minority carrier lifetime (τeff) from 5.7 15.0 μs. structure reduces loss, collection, distinctly enhances efficiency. experimental results indicate that short-circuit current power conversion 10.30% 17.90%, respectively. expected exceed Shockley–Queisser limit single cells.