One-dimensional organic lead halide perovskites with efficient bluish white-light emission

Organic-inorganic hybrid metal halide perovskites, an emerging class of solution processable photoactive materials, welcome a new member with a one-dimensional structure. Herein we report the synthesis, crystal structure and photophysical properties of one-dimensional organic lead bromide perovskite...

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Published in:Nature communications 2017-01, Vol.8 (1), p.14051-14051, Article 14051
Main Authors: Yuan, Zhao, Zhou, Chenkun, Tian, Yu, Shu, Yu, Messier, Joshua, Wang, Jamie C., van de Burgt, Lambertus J., Kountouriotis, Konstantinos, Xin, Yan, Holt, Ethan, Schanze, Kirk, Clark, Ronald, Siegrist, Theo, Ma, Biwu
Format: Article
Language:English
Subjects:
140/131
639/301/1019/1020
639/301/357/1016
639/301/357/404
639/638/298/398
Chemistry
Crystal structure
Electrons
Humanities and Social Sciences
Light
Microscopy
multidisciplinary
NMR
Nuclear magnetic resonance
Photovoltaic cells
Science
Science (multidisciplinary)
Single crystals
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Summary:Organic-inorganic hybrid metal halide perovskites, an emerging class of solution processable photoactive materials, welcome a new member with a one-dimensional structure. Herein we report the synthesis, crystal structure and photophysical properties of one-dimensional organic lead bromide perovskites, C 4 N 2 H 14 PbBr 4 , in which the edge sharing octahedral lead bromide chains [PbBr 4   2− ] ∞ are surrounded by the organic cations C 4 N 2 H 14   2+ to form the bulk assembly of core-shell quantum wires. This unique one-dimensional structure enables strong quantum confinement with the formation of self-trapped excited states that give efficient bluish white-light emissions with photoluminescence quantum efficiencies of approximately 20% for the bulk single crystals and 12% for the microscale crystals. This work verifies once again that one-dimensional systems are favourable for exciton self-trapping to produce highly efficient below-gap broadband luminescence, and opens up a new route towards superior light emitters based on bulk quantum materials. Low-dimensional systems exhibit unique optical properties. Yuan et al . demonstrate one-dimensional organic-inorganic hybrid metal halide perovskites with highly efficient bluish white-light emission due to efficient exciton self-trapping in the quantum-confined structure.
ISSN:2041-1723
2041-1723
DOI:10.1038/ncomms14051