Publication date: 18th June 2020
Tin is the closest relative of lead electronically. But they are substantially different chemically. This talk reports our recent observations on the chemistry of tin perovskites, including its oxidation by conventional solvent [1], comproportionation [2], and stabilization in operating LEDs [3].
References
[1] Saidaminov, M. I.; Spanopoulos, I.; Abed, J.; Ke, W.; Wicks, J.; Kanatzidis, M. G.; Sargent, E. H. Conventional Solvent Oxidizes Sn(II) in Perovskite Inks. ACS Energy Lett. 2020, 5 (4), 1153–1155.
[2] Lin, R.; Xiao, K.; Qin, Z.; Han, Q.; Zhang, C.; Wei, M.; Saidaminov, M. I.; Gao, Y.; Xu, J.; Xiao, M.; Li, A.; Zhu, J.; Sargent, E. H.; Tan, H. Monolithic All-Perovskite Tandem Solar Cells with 24.8% Efficiency Exploiting Comproportionation to Suppress Sn(Ii) Oxidation in Precursor Ink. Nat. Energy 2019, 4 (10), 864–873.
[3] Liang, H.; Yuan, F.; Johnston, A.; Gao, C.; Choubisa, H.; Gao, Y.; Wang, Y.; Sagar, L. K.; Sun, B.; Li, P.; Bappi, G.; Chen, B.; Li, J.; Wang, Y.; Dong, Y.; Ma, D.; Gao, Y.; Liu, Y.; Yuan, M.; Saidaminov, M. I.; Hoogland, S.; Lu, Z.; Sargent, E. H. High Color Purity Lead‐Free Perovskite Light‐Emitting Diodes via Sn Stabilization. Adv. Sci. 2020, 7 (8), 1903213. https://doi.org/10.1002/advs.201903213.
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