Photonics Research, Volume. 9, Issue 10, 1916(2021)

Ultrastable Gd3+ doped CsPbCl1.5Br1.5 nanocrystals blue glass for regulated and low thresholds amplified spontaneous emission

Qingyun He1, Enrou Mei1, Ze Wang1, Xiaojuan Liang1,2, Suqin Chen1,3, and Weidong Xiang1、*
Author Affiliations
  • 1College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
  • 2e-mail: lxj6126@126.com
  • 3e-mail: csqcsq125@wzu.edu.cn
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    Figures & Tables(6)
    (a) PL spectra. (b) Spectra plotted as (αhν)2−hν of Gd-doped CsPbCl1.5Br1.5 NCs glasses. (c) Photos of a series of Gd-doped CsPbCl1.5Br1.5 NCs glasses (S1–S4) (from left to light) in daylight and ultraviolet (UV) light.
    (a) TEM image of Gd-doped CsPbCl1.5Br1.5 NCs glass. (b) HRTEM image of CsPbCl1.5Br1.5 NCs glass (S1). (c) HRTEM image of Gd-doped CsPbCl1.5Br1.5 NCs glass (S3). (d) XRD patterns of Gd-doped CsPbCl1.5Br1.5 NCs glasses. (e)–(j) EDS elemental mappings of Gd-doped CsPbCl1.5Br1.5 NCs glass.
    (a) XRD patterns, (b) PL spectra, (c) UV-vis absorption spectra. (d) Spectra plotted as (αhν)2−hν of Gd-doped CsPbCl1.5Br1.5 NCs glasses (470°C–530°C).
    (a) PL intensity measured during heating, cooling, and reheating. (b) Time-dependent PL intensity. (c) Luminescent photographs of S3 stored in water for different times.
    (a), (c), (e), (g) Pump intensity-dependent PL spectra under increasing 800 nm fs pulsed excitation fluence from the Gd-doped CsPbCl1.5Br1.5 NCs glasses (S1–S4). (b), (d), (f), (h) Dependence of the integrated emission intensity (blue lines) and FWHM (red lines) of the emission spectra as a function of pumping density under 800 nm fs laser excitation (S1–S4).
    (a)–(c) Pump intensity-dependent PL spectra under increasing 800 nm fs pulsed excitation fluence from the Gd-doped CsPbCl1.5Br1.5 NCs glasses (470°C–530°C). (d)–(f) Dependence of the integrated emission intensity (blue lines) and FWHM (red lines) of the emission spectra as a function of pumping density under 800 nm fs laser excitation (470°C–530°C).
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    Qingyun He, Enrou Mei, Ze Wang, Xiaojuan Liang, Suqin Chen, Weidong Xiang. Ultrastable Gd3+ doped CsPbCl1.5Br1.5 nanocrystals blue glass for regulated and low thresholds amplified spontaneous emission[J]. Photonics Research, 2021, 9(10): 1916

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    Paper Information

    Category: Optical and Photonic Materials

    Received: May. 13, 2021

    Accepted: Jul. 17, 2021

    Published Online: Sep. 9, 2021

    The Author Email: Weidong Xiang (xiangweidong001@126.com)

    DOI:10.1364/PRJ.431387

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