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*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

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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