Additive engineering has been widely concerned to improve the photovoltaic performance of tin-based perovskite solar cells (PSCs). Here, the tin-based perovskite precursor solution is modified with L-Tyrosine hydrochloride (LTHCl). The results demonstrate that the defect state density of tin-based perovskite films is reduced by improving their morphology and crystallinity. The electrical properties of tin-based perovskite film are enhanced by suppressing the Sn²⁺ oxidation. As a result, the open-circuit voltage of tin-based PSCs is increased from 0.53 V to 0.59 V. The best power conversion efficiency of the tin-based PSC with LTHCl is up to 8.63 %, which is higher than that of the pristine device (7.65 %). Meanwhile, the tin-based PSC with LTHCl retains 84 % of its initial efficiency after over 1140 h in a nitrogen glove box.

增材工程已被广泛关注以提高锡基钙钛矿太阳能电池（PSC）的光伏性能。在这里，锡基钙钛矿前体溶液用 L-酪氨酸盐酸盐 (LTHCl) 进行改性。结果表明，锡基钙钛矿薄膜的缺陷态密度通过改善其形貌和结晶度而降低。通过抑制Sn ²⁺氧化来提高锡基钙钛矿薄膜的电性能。结果，锡基PSC的开路电压从0.53 V提高到0.59 V。采用LTHCl的锡基PSC的最佳功率转换效率高达8.63%，高于原始功率转换效率。设备（7.65%）。与此同时，使用 LTHCl 的锡基 PSC 在氮气手套箱中放置 1140 小时以上后仍保留了 84% 的初始效率。