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Inhomogeneous Halide Anions Distribution along Out-of-Plane Direction in Wide-Bandgap Perovskite Solar Cells and Its Effect on Open Circuit Voltage Loss and Phase Segregation.
Yu, Linkai; Xing, Chuwu; Bao, Qinghui; Zhang, Lian; Lu, Fei; He, Miao; Tai, Qidong; Zhang, Tianjin; Wang, Duofa.
Afiliación
  • Yu L; Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
  • Xing C; Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
  • Bao Q; Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
  • Zhang L; Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
  • Lu F; Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
  • He M; Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
  • Tai Q; The Institute of Technological Sciences, Wuhan University, Wuhan 430072, Hubei Province, China.
  • Zhang T; Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
  • Wang D; Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer, School of Material Science and Engineering, Hubei University, Wuhan 430062, Hubei Province, China.
ACS Appl Mater Interfaces ; 16(26): 33360-33370, 2024 Jul 03.
Article en En | MEDLINE | ID: mdl-38888395
ABSTRACT
The large open circuit voltage (VOC) loss and phase segregation are two main obstacles hindering the development of wide-bandgap perovskite solar cells (PSCs). Even though substantial progress has been made through crystallization regulation and surface modification on perovskite, the mechanism of VOC loss and phase segregation has rarely been studied. In this paper, we first investigate the halide ions distribution along the out-of-plane direction and find the initial inhomogeneous distribution of halide ions during the crystallization process is an important reason. It leads to the formation of an unfavorable potential well in PSCs, resulting in VOC loss as well as generation of strong strain exacerbating phase segregation. Through introducing melatonin (MT) into perovskite precursors, a homogeneous distribution of halide anions is realized due to the well-regulated crystallization. Consequently, the treated PSCs exhibit an optimized power conversion efficiency (PCE) of 22.88% with a VOC loss as low as 0.38 V, which are the best values for wide-bandgap PSCs up to now.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos