Issue 7, 2019

Photoreversible luminescence switching of CsPbI3 nanocrystals sensitized by photochromic AgI nanocrystals

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

Supplementary files

Article information

Article type
Paper
Submitted
04 dek 2018
Accepted
21 yan 2019
First published
22 yan 2019

Nanoscale, 2019,11, 3193-3199

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

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements