Controlled Growth of Monocrystalline Organo-Lead Halide Perovskite and Its Application in Photonic Devices

Wenxin Mao, Jialu Zheng, Yupeng Zhang, Anthony S.R. Chesman, Qingdong Ou, Jamie Hicks, Feng Li, Ziyu Wang, Brenton Graystone, Toby D.M. Bell, Mathias Uller Rothmann, Noel W. Duffy, Leone Spiccia, Yi-Bing Cheng, Qiaoliang Bao, Udo Bach

Research output: Contribution to journalArticleResearchpeer-review

32 Citations (Scopus)

Abstract

Organo-lead halide perovskites (OHPs) have recently emerged as a new class of exceptional optoelectronic materials, which may find use in many applications, including solar cells, light emitting diodes, and photodetectors. More complex applications, such as lasers and electro-optic modulators, require the use of monocrystalline perovskite materials to reach their ultimate performance levels. Conventional methods for forming single crystals of OHPs like methylammonium lead bromide (MAPbBr3) afford limited control over the product morphology, rendering the assembly of defined microcavity nanostructures difficult. We overcame this by synthesizing for the first time (MA)[PbBr3]DMF (1), and demonstrating its facile transformation into monocrystalline MAPbBr3 microplatelets. The MAPbBr3 microplatelets were tailored into waveguide based photonic devices, of which an ultra-low propagation loss of 0.04dBμm-1 for a propagation distance of 100μm was demonstrated. An efficient active electro-optical modulator (AEOM) consisting of a MAPbBr3 non-linear arc waveguide was demonstrated, exhibiting a 98.4% PL intensity modulation with an external voltage of 45V. This novel synthetic approach, as well as the demonstration of effective waveguiding, will pave the way for developing a wide range of photonic devices based on organo-lead halide perovskites.

Original languageEnglish
Pages (from-to)12486-12491
Number of pages6
JournalAngewandte Chemie - International Edition
Volume56
Issue number41
DOIs
Publication statusPublished - 2 Oct 2017

Keywords

  • Electro-optical modulator
  • Monocrystallinity
  • Perovskite
  • Polycrystallinity
  • Waveguide

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