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Reversible Ultra-Slow Crystal Growth of Mixed Lead Bismuth Perovskite Nanocrystals: The Presence of Dynamic Capping.
Chatterjee, Shovon; Dey, Pritam; Das, Nilimesh; Tiwari, Khushubo; Maiti, Tanmoy; Sen, Pratik.
Afiliação
  • Chatterjee S; Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India.
  • Dey P; Plasmonics and Perovskites Laboratory, Department of, Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India.
  • Das N; Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India.
  • Tiwari K; Department of Materials Science and Engineering, Indian Institute of, Technology Kanpur, Kanpur, 208 016, UP, India.
  • Maiti T; Plasmonics and Perovskites Laboratory, Department of, Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India.
  • Sen P; Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208 016, UP, India.
Chemistry ; 26(7): 1506-1510, 2020 Feb 03.
Article em En | MEDLINE | ID: mdl-31826313
An ultra-slow crystal growth over a period of 24 h of a newly synthesized CH3 NH3 Pb1/2 Bi1/3 I3 perovskite (MPBI) nanocrystal in non-polar toluene medium is reported here. From several spectroscopic techniques as well as from TEM analysis we found that the size of nanocrystals changes continuously with time, in spite of being capped by the ligands. Using a single molecular spectroscopic technique, we also found that this size change is not due to the stacking of nanocrystals but due to crystal growth. The notable temperature dependence and reversible nature of the nanocrystals growth is explained by the dynamic nature of the capping. The observed temperature-dependent ultra-slow growth is believed to be a pragmatic step towards controlling the size of perovskite NC in a systematic manner.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article