The influence of the buried interface on the orientational crystallization and thermal stability of halide perovskite thin films

Autor(es)

de Rodrigues, Murillo H. M. ; Neto, Diogo M. Guilhermitti ; Barcelos, Ingrid D. ; Labre, Cilene ; Costa, Carlos Alberto R. ; de Souza Junior, Joao Batista ; Sobrinho, Josiane A. ; Nogueira, Ana Flavia

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS CHEMISTRY A; v. 13, n. 23, p. 11-pg., 2025-05-14.

Resumo

Metal halide perovskites are promising materials for efficient solar energy conversion, holding promise as the next generation of photovoltaics. However, to fully realize the potential of perovskite solar cells (PSCs) and advance the technology towards commercialization, several stability issues still need to be addressed. Numerous approaches have already been explored to improve the stability of PSCs, with oriented crystal growth offering an effective strategy to not only improve stability but also increase device performance due to the photoelectric anisotropy of perovskites. In this work, we systematically monitor the influence of the most common underlayers used in regular and inverted PSCs on the oriented growth of formamidinium-cesium lead iodide (FA0.9Cs0.1PbI3) perovskites. Employing crystallographic, morphological, and spectroscopic characterization techniques, we show that the preferred orientation driven by the underlayers controls perovskite phase segregation under thermal stress, correlating it with the stability of perovskite films and solar cells subjected to 500 h of continuous heating at 85 degrees C. (AU)

• Processo FAPESP: 21/03321-9 - Controle estrutural de nanopartículas semicondutoras: superfície, defeitos e propriedades
• Beneficiário: João Batista Souza Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/11986-5 - Geração e Armazenamento de Novas Energias: trazendo desenvolvimento tecnológico para o país
• Beneficiário: Ana Flávia Nogueira
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 22/16614-7 - Estabilidade e dinâmica de formação da interface de perovskitas 2D/3D investigada por técnicas in situ
• Beneficiário: Murillo Henrique de Matos Rodrigues
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado