Issue 22, 2024

Realizing efficient broadband near-infrared emission under blue light excitation in Sb3+-doped zero-dimensional organic tin(iv)-based metal halides via coordination structure modulation

Abstract

Realizing Sb3+-activated efficient broadband near-infrared (NIR) emission under blue light excitation remains a significant challenge in lead-free metal halides. To overcome the above difficulties, a coordination structure modulation strategy was adopted, and the broadband NIR emission under blue light excitation was achieved in Sb3+-doped zero-dimensional (0D) organic tin(IV) bromide. Compared to the weak visible light emission with a photoluminescence quantum yield (PLQY) of 2.4% for pure (TBP)2SbBr5 (TBP = tetrabutylphosphonium), Sb3+-doped (TBP)2SnBr6 exhibits an efficient broadband NIR emission band at 705 nm with a PLQY of 33.2% upon 452 nm excitation, which stems from self-trapped exciton emission. Combined with experiments and theoretical calculations, we find that the large excited-state lattice distortion degree compared to the ground state and the narrow bandgap are dominant reasons for Sb3+-doped (TBP)2SnBr6 showing efficient NIR emission under blue light excitation. Specifically, Sb3+-doped (TBP)2SnBr6 also has excellent anti-water stability, existing stably in water for more than 4 hours while maintaining a high luminous efficiency. Based on the excellent stability and unique optical properties of Sb3+-doped (TBP)2SnBr6, a high-performance NIR light-emitting diode (LED) was fabricated by combining Sb3+-doped (TBP)2SnBr6 with a commercial blue LED chip, and its application in night vision was demonstrated.

Graphical abstract: Realizing efficient broadband near-infrared emission under blue light excitation in Sb3+-doped zero-dimensional organic tin(iv)-based metal halides via coordination structure modulation

Supplementary files

Article information

Article type
Research Article
Submitted
28 Jul 2024
Accepted
26 Sep 2024
First published
26 Sep 2024

Inorg. Chem. Front., 2024,11, 7979-7990

Realizing efficient broadband near-infrared emission under blue light excitation in Sb3+-doped zero-dimensional organic tin(IV)-based metal halides via coordination structure modulation

B. Ke, H. Peng, Y. Yang, C. Yang, S. Yao, A. Bukhtiar, Q. Wei, J. Zhao and B. Zou, Inorg. Chem. Front., 2024, 11, 7979 DOI: 10.1039/D4QI01904K

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