Increased resistance to photooxidation in Dion-Jacobson lead halide perovskites -- implication for perovskite device stability

Zhilin Ren; Juraj Ovčar; Tik Lun Leung; Yanling He; Yin Li; Dongyang Li; Xinshun Qin; Hongbo Mo; Zhengtian Yuan; Jueming Bing; Martin P. Bucknall; Luca Grisanti; Muhammad Umair Ali; Peng Bai; Tao Zhu; Ali Ashger Syed; Jingyang Lin; Jingbo Wang; Abdul-Khaleed; Wenting Sun; Gangyue Li; Gang Li; Alan Man Ching Ng; Anita W. Y. Ho-Baillie; Ivor Lončarić; Jasminka Popović; Aleksandra B. Djurišić

arXiv · 2409.12556

Increased resistance to photooxidation in Dion-Jacobson lead halide perovskites -- implication for perovskite device stability

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Abstract

2D metal halide perovskites have enabled significant stability improvements in perovskite devices, particularly in resistance to moisture. However, some 2D perovskites are even more susceptible to photooxidation compared to 3D perovskites. This is particularly true for more commonly investigated Ruddlesden-Popper (RP) perovskites that exhibit increased susceptibility to photoinduced degradation compared to Dion-Jacobson (DJ) perovskites. Comparisons between different RP and DJ perovskites reveal that this phenomenon cannot be explained by commonly proposed differences in superoxide ion generation, interlayer distance and lattice structural rigidity differences. Instead, the resistance to photooxidation of DJ perovskites can be attributed to decreased likelihood of double deprotonation events (compared to single deprotonation events in RP perovskites) required for the loss of organic cations and the perovskite decomposition. Consequently, DJ perovskites are less susceptible to oxidative degradation (both photo- and electrochemically induced), which leads to improved operational stability of solar cells based on these materials.

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Zhilin Ren, Juraj Ovčar, Tik Lun Leung, Yanling He, Yin Li, Dongyang Li, Xinshun Qin, Hongbo Mo, Zhengtian Yuan, Jueming Bing, Martin P. Bucknall, Luca Grisanti, Muhammad Umair Ali, Peng Bai, Tao Zhu, Ali Ashger Syed, Jingyang Lin, Jingbo Wang, Abdul-Khaleed, Wenting Sun, Gangyue Li, Gang Li, Alan Man Ching Ng, Anita W. Y. Ho-Baillie, Ivor Lončarić, Jasminka Popović, Aleksandra B. Djurišić. 2024-09-19. Increased resistance to photooxidation in Dion-Jacobson lead halide perovskites -- implication for perovskite device stability. https://arxiv.org/abs/2409.12556

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