Excitonic Feature in Hybrid Perovskite CH3NH3PbBr3 Single Crystals

• Hideyuki Kunugita

  Faculty of Science and Engineering, Sophia University

• Tsubasa Hashimoto

  Faculty of Science and Engineering, Sophia University

• Yuki Kiyota

  Faculty of Science and Engineering, Sophia University

• Yosuke Udagawa

  Faculty of Science and Engineering, Sophia University

• Yuko Takeoka

  Faculty of Science and Engineering, Sophia University

• Yuiga Nakamura

  Department of Materials Engineering, The University of Tokyo

• Junro Sano

  Department of Materials Engineering, The University of Tokyo

• Tomonori Matsushita

  Department of Materials Engineering, The University of Tokyo

• Takashi Kondo

  Department of Materials Engineering, The University of Tokyo

• Tsutomu Miyasaka

  Graduate School of Engineering, Toin University of Yokohama

• Kazuhiro Ema

  Faculty of Science and Engineering, Sophia University

Abstract

We have measured the temperature dependence of the reflection and photoluminescence spectra of a lead bromide hybrid material (CH3NH3PbBr3) using high-quality macroscopic single crystals. Single crystals provide clear and sample-independent reflection spectra that permit discussion of the properties of the photoexcited carriers. We have found that excitons still exist in CH3NH3PbBr3, even at room temperature. We have also determined the temperature dependence of the exciton resonance energy and the line width.

Journal

• Chemistry Letters

  Chemistry Letters 44 (6), 852-854, 2015-06

  Oxford University Press (OUP)

Keywords

• General Chemistry

Details

• CRID: 1360002219105672704
• NII Article ID: 130005074610
• DOI: 10.1246/cl.150204
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/44/6/852/55638798/cl.150204.pdf
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