Wavelength-Tunable and Highly Stable Perovskite-Quantum-Dot-Doped Lasers with Liquid Crystal Lasing Cavities

Lin Jer Chen, Jia Heng Dai, Jia De Lin, Ting Shan Mo, Hong Ping Lin, Hui Chen Yeh, Yu Chou Chuang, Shun An Jiang, Chia Rong Lee

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

This study applies a low-cost solvothermal method to synthesize all-inorganic (lead-free cesium tin halide) perovskite quantum dots (AIPQDs) and to fabricate AIPQD-doped lasers with cholesteric liquid crystal (CLC) lasing cavities. The lasers present highly qualified lasing features of low threshold (150 nJ/pulse) and narrow line width (0.20 nm) that are attributed to the conjunction of the suppression of photoluminescence (PL) loss caused by the quantum confinement of AIPQDs and the amplification of PL caused by the band-edge effect of the CLC-distributed feedback resonator. In addition, the lasers possess highly flexible lasing-wavelength tuning features and a long-term stability under storage at room temperature and under high humidity given the protective role of CLC. These advantages are difficult to confer to typical light-emitting perovskite devices. Given these merits, the AIPQD-doped CLC laser device has considerable potential applications in optoelectronic and photonic devices, including lighting, displays, and lasers.

Original languageEnglish
Pages (from-to)33307-33315
Number of pages9
JournalACS Applied Materials and Interfaces
Volume10
Issue number39
DOIs
Publication statusPublished - 2018 Oct 3

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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