Continuous-Wave Vertical Cavity Surface-Emitting Lasers based on Single Crystalline Lead Halide Perovskites

Hongbo Zhang, Chenji Zou, Yu Chen, Lishu Wu, Wen Wen, Bowen Du, Shun Feng, Jingzhi Shang, Chunxiao Cong, Ting Yu

Research output: Contribution to journalArticlepeer-review

Abstract

Lead halide perovskites are intriguing semiconductors for lasers due to high quantum yield, tunable bandgaps, and facile solution-process ability. However, limited by the weak optical confinement, continuous-wave (CW) pumped lasing, as one prerequisite for the electrically pumped lasing, is still challenging in bare lead halide perovskites without high-quality factor (Q) artificial optical cavity. Herein, the lasing emission in methylammonium lead tribromide (MAPbBr3) incorporated with a vertical microcavity under continuous pumping at 80 K is reported. The single-crystalline MAPbBr3 perovskite nanoplates are fabricated by the two-step solution method. The MAPbBr3-based vertical cavity surface-emitting laser (VCSEL) presents a low threshold of 55.2 W cm−2 and a high Q-factor of 1140 at low temperature. The low threshold lasing emission can be attributed to strong optical confinement in the high-Q cavity and great photoluminescence enhancement at 80 K, which is induced by a transition from tetragonal to orthorhombic phase, demonstrated by in situ temperature Raman spectroscopy. These findings envisage the prospective applications of single-crystalline metal halide perovskites in practicable laser devices.

Original languageEnglish
Article number2001982
JournalAdvanced Optical Materials
Volume9
Issue number13
Early online date3 May 2021
DOIs
Publication statusPublished - 5 Jul 2021

Keywords

  • continuous-wave lasing
  • lead halide perovskites
  • phase transitions
  • Raman spectroscopy
  • VCSEL

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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