Journal of Inorganic Materials, Volume. 37, Issue 4, 445(2022)

Reversible Conversion between Space-confined Lead Ions and Perovskite Nanocrystals for Confidential Information Storage

Figures & Tables(11)
Additional optical images of the obtained MAPbBr3 NCs@Pb-ZIF patterns on paper under UV excitation
Thermogravimetric curve of the obtained Pb-ZIF powders
(a) UV-Vis absorption spectra of the printed Pb-ZIF and MAPbBr3 NCs@Pb-ZIF patterns, (b) steady-state PL spectra and (c) PL decay kinetics of the printed MAPbBr3 NCs@Pb-ZIF patterns
Schematic diagram of in-situ growth of MAPbBr3 NCs from Pb-ZIF framework and optical images of Pb-ZIF (left under ambient light), and MAPbBr3 NCs@Pb-ZIF (right under UV light)
X-ray diffraction patterns of Pb-ZIF and MAPbBr3 NCs@Pb-ZIF powders The ideal diffraction peaks of MAPbBr3 were presented as red vertical line
Enlarged SEM images and corresponding Br and Pb mappings of the commercial paper with MAPbBr3 NCs@Pb-ZIF NCs
(a) TEM image and (b) SAED pattern of Pb-ZIF powders SEM images of (c, d) Pb-ZIF and (e) MAPbBr3 NCs@Pb-ZIF powders, and (f) Elemental mappings of MAPbBr3 NCs@Pb-ZIF powder
XPS spectra of Pb-ZIF and MAPbBr3 NCs@Pb-ZIF samples (a) Survey XPS spectra; (b) Pb4f XPS spectra (The offset of Pb 4f peaks marked by an arrow); (c) Br3d XPS spectra of Pb-ZIF and MAPbBr3 NCs@Pb-ZIF samples; (d) Br3d XPS spectrum of MAPbBr3 NCs@Pb-ZIF sample after etching
(a) Absorption and (b) steady-state PL spectra of Pb-ZIF and MAPbBr3 NCs@Pb-ZIF samples; (c) PL decay kinetics of MAPbBr3 NCs@Pb-ZIF sample; (d) Schematic confidential information encryption and decryption process based on Pb-ZIF and MAPbBr3 NCs@Pb-ZIF; (e) Optical images of the printed Pb-ZIF and MAPbBr3 NCs@Pb-ZIF patterns under UV excitation
SEM images of (a) pristine commercial paper, (b) commercial paper after printed with Pb-ZIF ink, (c) commercial paper with MAPbBr3 NCs@Pb-ZIF NCs, (d) representative information encryption and decryption procedure, and (e) PL intensity of the printed MAPbBr3 NCs@Pb-ZIF patterns in the five cycles of encryption and decryption measurement
  • Table 1.

    PL lifetime for MAPbBr3 NCs@Pb-ZIF powders

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    Table 1.

    PL lifetime for MAPbBr3 NCs@Pb-ZIF powders

    τ1/ns f1τ2/ns f2τavg/ns
    Powder4.082.7%16.317.3%6.1
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. Reversible Conversion between Space-confined Lead Ions and Perovskite Nanocrystals for Confidential Information Storage[J]. Journal of Inorganic Materials, 2022, 37(4): 445

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Paper Information

Category: RESEARCH LETTER

Received: Apr. 26, 2021

Accepted: --

Published Online: Jan. 10, 2023

The Author Email:

DOI:10.15541/jim20210270

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