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

Zhao Yuan, Chenkun Zhou, Yu Tian, Yu Shu, Joshua Messier, Jamie C. Wang, Lambertus J. van de Burgt, Konstantinos Kountouriotis, Yan Xin, Ethan Holt, Kirk Schanze, Ronald Clark, Theo Siegrist and Biwu Ma ()
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Zhao Yuan: FAMU-FSU College of Engineering, Florida State University
Chenkun Zhou: FAMU-FSU College of Engineering, Florida State University
Yu Tian: Materials Science Program, Florida State University
Yu Shu: FAMU-FSU College of Engineering, Florida State University
Joshua Messier: FAMU-FSU College of Engineering, Florida State University
Jamie C. Wang: Florida State University
Lambertus J. van de Burgt: Florida State University
Konstantinos Kountouriotis: Florida State University
Yan Xin: National High Magnetic Field Laboratory, Florida State University
Ethan Holt: University of Florida
Kirk Schanze: University of Florida
Ronald Clark: Florida State University
Theo Siegrist: FAMU-FSU College of Engineering, Florida State University
Biwu Ma: FAMU-FSU College of Engineering, Florida State University

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract 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, C4N2H14PbBr4, in which the edge sharing octahedral lead bromide chains [PbBr4 2−]∞ are surrounded by the organic cations C4N2H14 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.

Date: 2017
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DOI: 10.1038/ncomms14051

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