期刊
NATURE COMMUNICATIONS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms14051
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资金
- Florida State University
- FSU Research Foundation
- National High Magnetic Field Laboratory [NSF-DMR-0654118]
- State of Florida
- National Science Foundation [CHE-1531629]
- National Science Foundation Graduate Research Fellowship [DGE-1449440]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1531629] Funding Source: National Science Foundation
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, C4N2H14 PbBr4, in which the edge sharing octahedral lead bromide chains [PbBr42-](infinity) are surrounded by the organic cations C4N2H142+ 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.
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