Subwavelength-scale lasing perovskite with ultrahigh Purcell enhancement

Sui Yang, Wei Bao, Xiaoze Liu, Jeongmin Kim, Rongkuo Zhao, Renmin Ma, Yuan Wang, Xiang Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

The remarkable photophysical properties of halide perovskites have led to high-performance lasers. The slow emission dynamics and diffraction-limited device, however, impose an intrinsic barrier on realizing ultrafast and compact lasers for integrated optoelectronic applications. Plasmonic cavities have been employed to reduce laser size. Yet the emission dynamics is fundamentally limited due to the dilemma between ever-reduced cavity size and the increase of losses. Here, we show a subwavelength-scale lasing perovskite with ultrahigh Purcell enhancement of 209 that greatly enhances emission dynamics under ambient conditions. The hybrid surface plasmon polaritons (SPPs) coupled with perovskites significantly reduce plasmonic and trap state loss channels and promote a strong Purcell effect. Moreover, the realization of SPPs confinement away from the perovskite region mitigates gain degradations that enables superior long-term device stability and reliability. Our study opens a new avenue for on-chip ultrafast optoelectronics and fundamental studies of light-matter interactions at the strongly confined field.

Original languageEnglish (US)
Pages (from-to)4042-4050
Number of pages9
JournalMatter
Volume4
Issue number12
DOIs
StatePublished - Dec 1 2021
Externally publishedYes

Keywords

  • Emission dynamics
  • MAP4: Demonstrate
  • Nanolaser
  • Nanophotonics
  • Optoelectronics
  • Perovskite device stability
  • Perovskites
  • Plasmonics
  • Purcell enhancement
  • Sub-wavelength
  • Ultrafast photonics

ASJC Scopus subject areas

  • Materials Science(all)

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