Nano Research

, Volume 10, Issue 6, pp 2117–2129

Single-crystal microplates of two-dimensional organic–inorganic lead halide layered perovskites for optoelectronics

  • Dewei Ma
  • Yongping Fu
  • Lianna Dang
  • Jianyuan Zhai
  • Ilia A. Guzei
  • Song Jin
Research Article

DOI: 10.1007/s12274-016-1401-6

Cite this article as:
Ma, D., Fu, Y., Dang, L. et al. Nano Res. (2017) 10: 2117. doi:10.1007/s12274-016-1401-6

Abstract

Organic–inorganic hybrid perovskites attract considerable attention owing to their applications in high-efficiency solar cells and light emission. Compared with three-dimensional perovskites, two-dimensional (2D) layered hybrid perovskites have a higher exciton binding energy and potentially higher light-emission efficiency. The growth of high-quality crystalline 2D perovskites with a well-defined nanoscale morphology is desirable because they can be suitable building blocks for integrated optoelectronics and (nano)photonics. Herein, we report the facile solution growth of single-crystal microplates of 2D perovskites based on a 2-phenylethylammonium (C6H5CH2CH2NH3+, PEA) cation, (PEA)2PbX4 (X = Br, I), with a well-defined rectangular geometry and nanoscale thickness through a dissolution–recrystallization process. The crystal structures of (PEA)2PbX4 are first confirmed using single-crystal X-ray diffraction. A solution-phase transport-growth process is developed to grow microplates with a typical size of tens of micrometers and thickness of hundreds of nanometers on another clean substrate different from the substrate coated with lead-acetate precursor film. Surface-topography analysis suggests that the formation of the 2D microplates is likely driven by the wedding-cake growth mechanism. Through halide alloying, the photoluminescence emission of (PEA)2Pb(Br,I)4 perovskites with a narrow peak bandwidth is readily tuned from violet (~410 nm) to green (~530 nm).

Keywords

layered lead-halide perovskite phenylethylammonium lead-halide perovskites microplate nanoplate dissolution–recrystallization photoluminescence 

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Supplementary material

12274_2016_1401_MOESM1_ESM.pdf (2.7 mb)
Single-crystal microplates of two-dimensional organic–inorganic lead halide layered perovskites for optoelectronics

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Dewei Ma
    • 1
    • 2
  • Yongping Fu
    • 1
  • Lianna Dang
    • 1
  • Jianyuan Zhai
    • 1
  • Ilia A. Guzei
    • 1
  • Song Jin
    • 1
  1. 1.Department of ChemistryUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Department of Applied PhysicsZhejiang University of TechnologyHangzhouChina

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