Tin perovskite solar cells with >1,300 h of operational stability in N2 through a synergistic chemical engineering approach
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Títol
Tin perovskite solar cells with >1,300 h of operational stability in N2 through a synergistic chemical engineering approachAutoria
Data de publicació
2022-03-14Editor
ElsevierISSN
2542-4351Cita bibliogràfica
Sanchez-Diaz et al., Tin perovskite solar cells with >1,300 h of operational stability in N2 through a synergistic chemical engineering approach, Joule (2022), https://doi.org/10.1016/j.joule.2022.02.014Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
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 ... [+]
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 (NaBH4), 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 N2. 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. [-]
Publicat a
Sanchez-Diaz et al., Joule 6, 1–23Entitat finançadora
European Commission | Ministerio de Ciencia, Innovación y Universidades (Spain) | uropean Research Council | Universitat Jaume I
Codi del projecte o subvenció
info:eu-repo/grantAgreement/EC/H2020/862656 | info:eu-repo/grantAgreement/EC/H2020/764787 | STABLE PID2019-107314RB-I00 | info:eu-repo/grantAgreement/EC/H2020/724424 | UJI-B2019-09
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info:eu-repo/semantics/openAccess
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