Jump to main content
Jump to site search

Issue 7, 2019
Previous Article Next Article

Photoreversible luminescence switching of CsPbI3 nanocrystals sensitized by photochromic AgI nanocrystals

Author affiliations

Abstract

Smart fluorescent materials have attracted much attention due to their promising applications in various fields. Here, we demonstrate a reversible fluorescence switching of CsPbI3 nanocrystals (NCs) using photochromic AgI NCs as the photosensitizer. Upon light irradiation, AgI NCs are decomposed into metallic Ag and elemental I2, leading to the formation of Ag–CsPbI3 heterostructures. Because Ag has a lower Fermi level than that of CsPbI3, excited electrons will transfer from CsPbI3 to Ag, resulting in the quenching of photoluminescence emission. When the composite is stored in the dark, metallic Ag is oxidized into AgI, and the PL emission of CsPbI3 NCs can be recovered. The application of the AgI/CsPbI3 system has been demonstrated as a rewritable platform. This work may shed light on the exploration of CsPbX3 NCs for applications in smart fluorescent materials.

Graphical abstract: Photoreversible luminescence switching of CsPbI3 nanocrystals sensitized by photochromic AgI nanocrystals

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Dec 2018, accepted on 21 Jan 2019 and first published on 22 Jan 2019


Article type: Paper
DOI: 10.1039/C8NR09783F
Citation: Nanoscale, 2019,11, 3193-3199

  •   Request permissions

    Photoreversible luminescence switching of CsPbI3 nanocrystals sensitized by photochromic AgI nanocrystals

    P. Li, D. Yang, Q. Zhong, Y. Zhang, M. Chen, S. Jiang, J. Chen, M. Cao, Q. Zhang and Y. Yin, Nanoscale, 2019, 11, 3193
    DOI: 10.1039/C8NR09783F

Search articles by author

Spotlight

Advertisements