Room-temperature synthesis of cyan CsPb(Cl/Br)3/SiO2 nanospheres with LiCl-H2O solution

Peiyuan Cao; Bobo Yang; Yanrong Cao; Fei Zheng; Jun Zou

doi:10.3788/COL202018.071601

Journals >Chinese Optics Letters >Volume 18 >Issue 7 >Page 071601 > Article

Chinese Optics Letters
Vol. 18, Issue 7, 071601 (2020)

Room-temperature synthesis of cyan CsPb(Cl/Br)₃/SiO₂ nanospheres with LiCl-H₂O solution

Peiyuan Cao¹, Bobo Yang^1、2、**, Yanrong Cao³, Fei Zheng¹, and Jun Zou^1、4、*

Author Affiliations

¹School of Science, Shanghai Institute of Technology, Shanghai 201418, China

²Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China

³School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China

⁴Institute of New Materials & Industrial Technology, Wenzhou University, Wenzhou 325024, China

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DOI: 10.3788/COL202018.071601 Cite this Article Set citation alerts

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 Copy Citation Text

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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 @ {SiO}_{2}

at different resolutions. Inset of (a) is the size distributions of the

QDs @ {SiO}_{2}

nanospheres. Inset of (c) is the corresponding SAED image.

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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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Fig. 4. (a) XRD patterns of the samples fabricated with different amounts of

LiCl - H_{2} O

. (b) Crystal structure of cubic

{CsPbBr}_{3}

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Fig. 5. (a) PLE spectra of the

QD / {SiO}_{2}

composition and (b) FTIR spectra of the

{SiO}_{2}

and

CsPb {(Cl / Br)}_{3} @ {SiO}_{2}

compounds.

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

LiCl - H_{2} O

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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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