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Regulating Phase Distribution of Dion-Jacobson Perovskite Colloidal Multiple Quantum Wells Toward Highly Stable Deep-Blue Emission.
He, Haiyang; Xing, Yifeng; Cui, Zhongjie; Qin, Shuaitao; Wen, Zhuoqi; Yang, Dan; Xie, Haijiao; Mei, Shiliang; Zhang, Wanlu; Guo, Ruiqian.
Afiliación
  • He H; Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai, 200433, China.
  • Xing Y; Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai, 200433, China.
  • Cui Z; Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai, 200433, China.
  • Qin S; Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai, 200433, China.
  • Wen Z; Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai, 200433, China.
  • Yang D; Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai, 200433, China.
  • Xie H; Hangzhou Yanqu Information Technology Co., Ltd, Xihu District, Hangzhou City, Zhejiang, 310003, China.
  • Mei S; Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai, 200433, China.
  • Zhang W; Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai, 200433, China.
  • Guo R; Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai, 200433, China.
Small ; 20(5): e2305191, 2024 Feb.
Article en En | MEDLINE | ID: mdl-37752759
Metal halide perovskite colloidal quantum wells (CQWs) hold great promise for modern photonics and optoelectronics. However, current studies focus on Ruddlesden-Popper (R-P) phase perovskite CQWs that contain bilayers of monovalent long-chain alkylamomoniums between the separated perovskite octahedra layers. The bilayers are packed back-to-back via weak van der Waals interaction, resulting in inferior charge carrier transport and easier decomposition of perovskite. This report first creates a new type of perovskite colloidal multiple QWs (CMQWs) in the form of Dion-Jacobson (D-J) structure by introducing an asymmetric diammonium cation. Furthermore, the phase distribution is optimized by the synergistic effect of valeric acid and zwitterionic lecithin, finally achieving pure deep-blue emission at 435 nm with narrow full width at half maximum. The diammonium layer in D-J perovskite CMQWs features extremely short width of only ≈0.6 nm, thereby contributing to more effective charge carrier transport and higher stability. Through the continuous photoluminescence (PL) measurement and corresponding theoretical calculation, the higher stability of D-J perovskite CMQWs than that of R-P structural CMQWs is confirmed. This work reveals the inherent superior stability of D-J structural CMQWs, which opens a new direction for fabricating stable perovskite optoelectronics.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania