• Chinese Optics Letters
  • Vol. 18, Issue 1, 011403 (2020)
Haibo Fan1, Yining Mu1、*, Chunyang Liu1、2、**, Yan Zhu1, Guozhen Liu1, Shuai Wang1, Yanzheng Li1, and Peng Du1
Author Affiliations
  • 1School of Science, Changchun University of Science and Technology, Changchun 130022, China
  • 2Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory of UV-Emitting Materials and Technology (Northeast Normal University), Ministry of Education, Changchun 130024, China
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    DOI: 10.3788/COL202018.011403 Cite this Article Set citation alerts
    Haibo Fan, Yining Mu, Chunyang Liu, Yan Zhu, Guozhen Liu, Shuai Wang, Yanzheng Li, Peng Du. Random lasing of CsPbBr3 perovskite thin films pumped by modulated electron beam[J]. Chinese Optics Letters, 2020, 18(1): 011403 Copy Citation Text show less
    Crystal structure and thin film preparation process of CsPbBr3.
    Fig. 1. Crystal structure and thin film preparation process of CsPbBr3.
    X-ray diffraction patterns of CsPbBr3 nanocrystals.
    Fig. 2. X-ray diffraction patterns of CsPbBr3 nanocrystals.
    (a) TEM characterization of CsPbBr3 nanocrystals. (b) The size distribution of the nanocrystals. (c)–(g) Scanning electron microscopy (SEM) characterization of CsPbBr3 perovskite thin films with thicknesses of 300, 450, 800, 1800, and 4500 nm.
    Fig. 3. (a) TEM characterization of CsPbBr3 nanocrystals. (b) The size distribution of the nanocrystals. (c)–(g) Scanning electron microscopy (SEM) characterization of CsPbBr3 perovskite thin films with thicknesses of 300, 450, 800, 1800, and 4500 nm.
    Schematic diagram of electron beam pumping source.
    Fig. 4. Schematic diagram of electron beam pumping source.
    Photoluminescence spectra of CsPbBr3 quantum dot thin films.
    Fig. 5. Photoluminescence spectra of CsPbBr3 quantum dot thin films.
    Electron beam pumping spectra of CsPbBr3 quantum dot thin films by different acceleration voltages.
    Fig. 6. Electron beam pumping spectra of CsPbBr3 quantum dot thin films by different acceleration voltages.
    Luminescence intensity of CsPbBr3 quantum dots with different film thicknesses pumped by an electron beam. The inset shows the lasing threshold and FWHM variation of the 300 nm CsPbBr3 quantum dot film.
    Fig. 7. Luminescence intensity of CsPbBr3 quantum dots with different film thicknesses pumped by an electron beam. The inset shows the lasing threshold and FWHM variation of the 300 nm CsPbBr3 quantum dot film.
    Schematic diagram of random lasing mechanism of electron beam pumped CsPbBr3 quantum dots.
    Fig. 8. Schematic diagram of random lasing mechanism of electron beam pumped CsPbBr3 quantum dots.
    Energy distribution of the electron beam inside the quantum dot films.
    Fig. 9. Energy distribution of the electron beam inside the quantum dot films.
    Haibo Fan, Yining Mu, Chunyang Liu, Yan Zhu, Guozhen Liu, Shuai Wang, Yanzheng Li, Peng Du. Random lasing of CsPbBr3 perovskite thin films pumped by modulated electron beam[J]. Chinese Optics Letters, 2020, 18(1): 011403
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