Improved Performance and Stability of Perovskite Solar Modules by Regulating Interfacial Ion Diffusion with Nonionic Cross-Linked 1D Lead-Iodide,Advanced Energy Materials

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Improved Performance and Stability of Perovskite Solar Modules by Regulating Interfacial Ion Diffusion with Nonionic Cross-Linked 1D Lead-Iodide
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2021-11-11 , DOI: 10.1002/aenm.202102820
Haipeng Zeng ₁ , Lin Li ₁ , Fengxiang Liu ₁ , Min Li ₁ , Shujing Zhang ₁ , Xin Zheng ₁ , Long Luo ₁ , Shuai You ₁ , Yang Zhao ₁ , Rui Guo ₁ , Zhongmiao Gong ₂ , Rong Huang ₂ , Zhe Li ₃ , Ti Wang ₃ , Yi Cui ₂ , Yaoguang Rong ₁ , Xiong Li ₁

Affiliation

Long-term stability has become the major obstacle for the successful large-scale application of perovskites devices. Owing to the ionic nature of metal-halide perovskites, the interfacial ion diffusion can induce irreversible degradation under operational conditions, which presents a great challenge to realize stable perovskite solar modules. Here, a diphenylphosphine oxide compound, ethane-1,2-diylbis(diphenylphosphine oxide) (DPPO) is introduced to coordinate with lead iodide and form a cross-linked 1D Pb₃I₆-DPPO (1D-PbI₂) complex. These judiciously designed cross-linked nonionic low-dimensional lead halide/organic adducts can passivate the defects of perovskite while acting as a robust ion diffusion barrier, thus significantly improving the electronic quality and intrinsic stability of perovskite films. As a result, high-performance inverted (p-i-n) solar modules with a champion efficiency approaching 19% (a certified stabilized efficiency of 17.8%) for active device areas above 17 cm² without the use of antisolvents, accompanied by outstanding operational stability under heat stress and continuous illumination are achieved.

中文翻译：

通过非离子交联一维碘化铅调节界面离子扩散来提高钙钛矿太阳能模块的性能和稳定性

长期稳定性已成为钙钛矿器件成功大规模应用的主要障碍。由于金属卤化物钙钛矿的离子性质，界面离子扩散会在操作条件下引起不可逆的降解，这对实现稳定的钙钛矿太阳能组件提出了巨大挑战。在此，引入二苯基氧化膦化合物乙烷-1,2-二基双（二苯基氧化膦）（DPPO）与碘化铅配位并形成交联的 1D Pb ₃ I ₆ -DPPO（1D-PbI ₂）复杂的。这些精心设计的交联非离子低维卤化铅/有机加合物可以钝化钙钛矿的缺陷，同时充当强大的离子扩散屏障，从而显着提高钙钛矿薄膜的电子质量和内在稳定性。因此，对于 17 cm ²以上的有源器件面积，高性能倒置（销）太阳能模块的最高效率接近 19%（经认证的稳定效率为 17.8%），无需使用反溶剂，同时在热条件下具有出色的运行稳定性实现应力和连续照明。

更新日期：2022-01-06

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