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  • Received: Feb. 29, 2020

    Accepted: Apr. 16, 2020

    Posted: Jun. 11, 2020

    Published Online: Jun. 12, 2020

    The Author Email: Bobo Yang (boboyang@sit.edu.cn), Jun Zou (zoujun@sit.edu.cn)

    DOI: 10.3788/COL202018.071601

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    Peiyuan Cao, Bobo Yang, Yanrong Cao, Fei Zheng, Jun Zou. Room-temperature synthesis of cyan CsPb(Cl/Br)3/SiO2 nanospheres with LiCl-H2O solution[J]. Chinese Optics Letters, 2020, 18(7): 071601

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Synthesizing schematic of the silica-coated CsPb(Cl/Br)3 QDs.

Fig. 1. Synthesizing schematic of the silica-coated CsPb(Cl/Br)3 QDs.

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TEM images of QDs@SiO2 at different resolutions. Inset of (a) is the size distributions of the QDs@SiO2 nanospheres. Inset of (c) is the corresponding SAED image.

Fig. 2. TEM images of QDs@SiO2 at different resolutions. Inset of (a) is the size distributions of the QDs@SiO2 nanospheres. Inset of (c) is the corresponding SAED image.

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(a) Normalized PL spectra and (b) original PL intensity spectra of the five samples when the amount of LiCl was 0/60/100/140/180 μL. (c) The pictures that recorded the compound powder (from left to right: 0 to 180 μL) exposed under the white fluorescent lamp (top row) and the UV light (bottom row), respectively.

Fig. 3. (a) Normalized PL spectra and (b) original PL intensity spectra of the five samples when the amount of LiCl was 0/60/100/140/180 μL. (c) The pictures that recorded the compound powder (from left to right: 0 to 180 μL) exposed under the white fluorescent lamp (top row) and the UV light (bottom row), respectively.

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(a) XRD patterns of the samples fabricated with different amounts of LiCl-H2O. (b) Crystal structure of cubic CsPbBr3.

Fig. 4. (a) XRD patterns of the samples fabricated with different amounts of LiCl-H2O. (b) Crystal structure of cubic CsPbBr3.

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(a) PLE spectra of the QD/SiO2 composition and (b) FTIR spectra of the SiO2 and CsPb(Cl/Br)3@SiO2 compounds.

Fig. 5. (a) PLE spectra of the QD/SiO2 composition and (b) FTIR spectra of the SiO2 and CsPb(Cl/Br)3@SiO2 compounds.

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Schematic of the CIE map (from top to bottom: 0/60/100/140/180 μL of LiCl-H2O).

Fig. 6. Schematic of the CIE map (from top to bottom: 0/60/100/140/180 μL of LiCl-H2O).

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