A Review of Carrier Transport in High‐Efficiency Sb2(S,Se)3 Solar Cells

As a kind new photovoltaic material, antimony sulfide–selenide (Sb 2 (S,Se) 3 ) thin films have been considered a promising low‐cost solar cell absorption layer material due to their excellent photoelectric performance and stability. Continued research and development efforts have significantly increased the power conversion efficiency of Sb 2 (S,Se) 3 solar cells over the past few years, which now exceeds 10%. High device performance requires efficient carrier collection and transport. A deeper understanding of the carrier‐transport process can guide the optimization of solar cell designs and materials. Herein, the factors affecting carrier transport combined with the crystal structure in Sb 2 (S,Se) 3 solar cells are discussed. Recent advances in carrier management strategies to overcome the recombination losses are also discussed, broadly categorized into two main approaches: regulation of the absorption layer and optimization of the device interface contacts. Furthermore, the possible future research directions of Sb 2 (S,Se) 3 solar cells are prospected.