CsPbBr3 Perovskite Quantum Dot Vertical Cavity Lasers with Low Threshold and High Stability

Chun Ying Huang, Chen Zou, Chenyi Mao, Kathryn L. Corp, Yung Chi Yao, Ya Ju Lee, Cody W. Schlenker, Alex K.Y. Jen, Lih Y. Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

248 Citations (Scopus)


All-inorganic cesium lead bromide (CsPbBr3) perovskite quantum dots (QDs) have recently emerged as highly promising solution-processed materials for next-generation light-emitting applications. They combine the advantages of QD and perovskite materials, which makes them an attractive platform for achieving high optical gain with high stability. Here, we report an ultralow lasing threshold (0.39 μJ/cm2) from a hybrid vertical cavity surface emitting laser (VCSEL) structure consisting of a CsPbBr3 QD thin film and two highly reflective distributed Bragg reflectors (DBRs). Temperature dependence of the lasing threshold and long-term stability of the device were also characterized. Notably, the CsPbBr3 QDs provide superior stability and enable stable device operation over 5 h/1.8 × 107 optical pulse excitations under ambient conditions. This work demonstrates the significant potential of CsPbBr3 perovskite QD VCSELs for highly reliable lasers, capable of operating in the short-pulse (femtosecond) and quasi-continuous-wave (nanosecond) regimes.

Original languageEnglish
Pages (from-to)2281-2289
Number of pages9
JournalACS Photonics
Issue number9
Publication statusPublished - 2017 Sept 20
Externally publishedYes


  • CsPbBr quantum dots
  • DBR
  • amplified spontaneous emission (ASE)
  • lasing
  • perovskite
  • stability
  • threshold
  • vertical cavity surface emitting lasers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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