articleJournal of the American Chemical SocietyMar 17, 2017Closed access

White-Light Emission and Structural Distortion in New Corrugated Two-Dimensional Lead Bromide Perovskites

LMLingling MaoYWYilei WuCCConstantinos C. StoumposMRMichael R. WasielewskiMGMercouri G. Kanatzidis

Northwestern University

PubMed
Indexed incrossrefpubmed

Abstract

Hybrid inorganic–organic perovskites are developing rapidly as high performance semiconductors. Recently, two-dimensional (2D) perovskites were found to have white-light, broadband emission in the visible range that was attributed mainly to the role of self-trapped excitons (STEs). Here, we describe three new 2D lead bromide perovskites incorporating a series of bifunctional ammonium dications as templates which also emit white light: (1) α-(DMEN)PbBr4 (DMEN = 2-(dimethylamino)ethylamine), which adopts a unique corrugated layered structure in space group Pbca with unit cell a = 18.901(4) Å, b = 11.782(2) Å, and c = 23.680(5) Å; (2) (DMAPA)PbBr4 (DMAPA = 3-(dimethylamino)-1-propylamine), which crystallizes in…

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Topics & keywords

Topics
Keywords
  • Chemistry
  • Photoluminescence
  • Ethylamine
  • Octahedron
  • Color rendering index
  • Perovskite (structure)
  • Crystallography
  • Phosphor
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