Random lasing in cesium lead iodide (CsPbI3) thin films with no surface passivation

Zong Yu Wu, Bo Lun Jian, Chun Sheng Wu, Hsu Cheng Hsu

Research output: Contribution to journalArticlepeer-review


We report the CsPbI3 random lasing at room temperature fabricated by a chemical deposition method. The CsPbI3 thin films with high crystalline quality have intense PL emission and easily achieve the lasing behavior with the Q-factor value over 7000. The lasing behavior of CsPbI3 thin films can be classified as random lasing by measuring lasing spectra at different collective angles. The fast Fourier transform analysis of the lasing spectra is employed to determine the effective cavity length. Most important of all, the lasing stability investigation shows the prolonged lasing stability over 4.8 X 105 laser shots in air.

Original languageEnglish
Pages (from-to)21805-21813
Number of pages9
JournalOptics Express
Issue number15
Publication statusPublished - 2020 Jul 20

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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