Tin perovskite solar cells with >1,300 h of operational stability in N 2 through a synergistic chemical engineering approach.

Autor: Sanchez-Diaz J; Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Sos Baynat, s/n, 12071 Castelló, Spain., Sánchez RS; Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Sos Baynat, s/n, 12071 Castelló, Spain., Masi S; Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Sos Baynat, s/n, 12071 Castelló, Spain., Kreĉmarová M; UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, c/ Catedrático J. Beltrán, 2, 46980 Paterna, Spain., Alvarez AO; Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Sos Baynat, s/n, 12071 Castelló, Spain., Barea EM; Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Sos Baynat, s/n, 12071 Castelló, Spain., Rodriguez-Romero J; Facultad de Química, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México 04510, México., Chirvony VS; UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, c/ Catedrático J. Beltrán, 2, 46980 Paterna, Spain., Sánchez-Royo JF; UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, c/ Catedrático J. Beltrán, 2, 46980 Paterna, Spain.; MATINÉE: CSIC Associated Unit (ICMM-ICMUV of the University of Valencia), Universidad de Valencia, Valencia, Spain., Martinez-Pastor JP; UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, c/ Catedrático J. Beltrán, 2, 46980 Paterna, Spain.; MATINÉE: CSIC Associated Unit (ICMM-ICMUV of the University of Valencia), Universidad de Valencia, Valencia, Spain., Mora-Seró I; Institute of Advanced Materials (INAM), Universitat Jaume I, Av. Sos Baynat, s/n, 12071 Castelló, Spain.
Jazyk: angličtina
Zdroj: Joule [Joule] 2022 Apr 20; Vol. 6 (4), pp. 861-883. Date of Electronic Publication: 2022 Apr 20.
DOI: 10.1016/j.joule.2022.02.014
Abstrakt: Despite the promising properties of tin-based halide perovskites, one clear limitation is the fast Sn +2 oxidation. Consequently, the preparation of long-lasting devices remains challenging. Here, we report a chemical engineering approach, based on adding Dipropylammonium iodide (DipI) together with a well-known reducing agent, sodium borohydride (NaBH 4 ), aimed at preventing the premature degradation of Sn-HPs. This strategy allows for obtaining efficiencies (PCE) above 10% with enhanced stability. The initial PCE remained unchanged upon 5 h in air (60% RH) at maximum-power-point (MPP). Remarkably, 96% of the initial PCE was kept after 1,300 h at MPP in N 2 . To the best of our knowledge, these are the highest reported values for Sn-based solar cells. Our findings demonstrate a beneficial synergistic effect when additives are incorporated, highlight the important role of iodide in the performance upon light soaking, and, ultimately, unveil the relevance of controlling the halide chemistry for future improvement of Sn-based perovskite devices.
Competing Interests: The authors declare no competing interests.
(© 2022 The Authors.)
Databáze: MEDLINE
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