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Photoluminescence spectral broadening, chirality transfer and amplification of chiral perovskite materials (R-X-p-mBZA)2PbBr4 (X = H, F, Cl, Br) regulated by van der Waals and halogen atoms interactions.
Zhou, Chenyang; Chu, Ya; Ma, Linlin; Zhong, Yingqian; Wang, Chao; Liu, Yalan; Zhang, Haoyue; Wang, Beibei; Feng, Xia; Yu, Xi; Zhang, Xiaotao; Sun, Yan; Li, Xiaozeng; Zhao, Guangjiu.
Afiliação
  • Zhou C; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Chu Y; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Ma L; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Zhong Y; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Wang C; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Liu Y; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Zhang H; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Wang B; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Feng X; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Yu X; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Zhang X; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Sun Y; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Li X; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
  • Zhao G; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of
Phys Chem Chem Phys ; 22(30): 17299-17305, 2020 Aug 05.
Article em En | MEDLINE | ID: mdl-32686811
ABSTRACT
In this work, we introduced halogen-substituted chiral molecules as A-site cations to synthesize a series of novel organic-inorganic hybrid two-dimensional (2D) chiral perovskite materials (R-X-p-mBZA)2PbBr4 (X = H, F, Cl, Br; p para-position; mBZA = α-methylbenzylamine) for the first time. This halogen-substituted cation strategy collectively solved problems of narrow emission, weak chirality and low photoluminescence quantum yield (PLQY) for the emerged chiral perovskites. Photoluminescence (PL) spectra are significantly broadened due to the additional emission from self-trapped excitons (STEs) besides free excitons (FEs) states modulated by introducing significant disorder to the Pb-Br-Pb angle. The chirality of A-site chiral molecules is transferred and amplified to entire perovskite materials by fixing the chiral molecules at A-site via the interaction of halogen atoms. Furthermore, their PLQYs are improved with the reduction of energy gap and inhibition of the non-radiative transition from STEs to ground state. The halogen-substituted A-site cation strategy can be performed to develop organic-inorganic hybrid chiral perovskites with various optoelectronic applications.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2020 Tipo de documento: Article
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2020 Tipo de documento: Article