Widening the 2D/3D Perovskite Family for Efficient and Thermal-Resistant Solar Cells by the Use of Secondary Ammonium Cations
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Título
Widening the 2D/3D Perovskite Family for Efficient and Thermal-Resistant Solar Cells by the Use of Secondary Ammonium CationsAutoría
Fecha de publicación
2020-03-02Editor
American Chemical SocietyISSN
1932-7447; 1932-7455Cita bibliográfica
RODRÍGUEZ-ROMERO, J. et al. Widening the 2D/3D Perovskite Family for Efficient and Thermal-Resistant Solar Cells by the Use of Secondary Ammonium Cations. ACS Energy Letters, 2020, vol. 5, no 4, p. 1013-1021.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.acs.org/doi/10.1021/acsenergylett.9b02755Versión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
While 2D/3D layered perovskites have been the object of comprehensive research principally focused on increasing the long-term stability observed in 3D perovskites, significant opportunities still exist concerning the ... [+]
While 2D/3D layered perovskites have been the object of comprehensive research principally focused on increasing the long-term stability observed in 3D perovskites, significant opportunities still exist concerning the application of different kinds of cations outside the sphere of primary amines, which are the cations most usually applied. Our results demonstrate that the materials and the solar cells prepared with dipropylammonium iodide (DipI), a bulky secondary ammonium cation of small size, lead to obtaining materials that are not only efficient and thermodynamically stable but also robust toward heat stress. Time-resolved studies indicate longer carrier lifetime for 2D/3D layered perovskites fabricated with this bulky cation than for systems based on bulky primary ammonium cations, which allowed us to obtain PCE = 12.51% (n = 10), 15.78% (n = 50), and 17.90% (n = 90). We determine that the concentration of perovskite material after 240 min at 100 °C is up to 575% greater in the 2D/3D perovskite (n = 10) than that observed in 3D perovskite films. The material stability also improves the thermal stability of the photovoltaic devices, presenting an efficiency drop of just 4% for n = 50 and n = 10 after thermal annealing while the performance drop for reference 3D samples in the same conditions was greater than 80%. [-]
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ACS Energy Letters, 2020, vol. 5, no 4Proyecto de investigación
University Jaume I: Project DEPE2D UJI-B2019-09; Ministerio de Economia y Competividad of Spain Government: MAT2016-76892-C3-1-R; European Research Council (ERC) via Consolidator Grant: 724424 - No-LIMIT; SENER-CONACyTDerechos de acceso
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