研究目的
To summarize the recent advances toward efficient and stable tin-based perovskite solar cells (PSCs) and offer a perspective for future study.
研究成果
Tin-based perovskites are promising candidates for fabricating efficient lead-free PSCs, but their development is hindered by the chemical instability of Sn2+ and poor film morphology. Compositional engineering and innovative methods for film growth are desired to improve performance. Future studies should explore the synergy effect of A-, B-, and X-site composition tailoring, in-situ formed antioxidant protection layers, and novel charge transport materials.
研究不足
The development of high-performance tin-based PSCs is less successful than the lead-based ones, with the best PCE of about 10% reported, which is far below the theoretical expectation. The chemical instability of Sn2+ results in high density of defects in perovskite films, causing significant VOC loss and undermining device stability. The poor film morphology caused by the rapid crystallization nature of tin-based perovskites also results in poor device performance.
