Issue 2, 2025

Halogen engineering tuned band gap and structural phase transition in lead iodide hybrid perovskite semiconductors

Abstract

Organic–inorganic hybrid materials possess unique advantages, including structural adjustability and tunable functional properties, making them promising candidates for applications in sensors, intelligent switches, and optoelectronic devices. In this study, we investigate the impact of halogen tuning on the macroscopic properties of three 1D (one-dimensional) perovskite semiconductor hybrids: [RCM3HQ]2PbI4 (1), [RBM3HQ]2PbI4 (2), and [RIM3HQ]2PbI4 (3) (where RCM3HQ = R-N-chloromethyl-3-hydroxylquinuclidinium, RBM3HQ = R-N-bromomethyl-3-hydroxylquinuclidinium, and RIM3HQ = R-N-iodomethyl-3-hydroxylquinuclidinium). As anticipated, halogen tuning facilitates the regulation of structural phase transitions, with hybrid 1 exhibiting a phase transition accompanied by a dielectric switch. Notably, halogen engineering alters the band gap significantly, decreasing it from 2.75 eV (1) to 2.35 eV (3). Furthermore, all compounds 1–3 demonstrate a response to X-ray radiation detection and exhibit good photocurrent stability. Our findings present an effective molecular design strategy for optimizing the properties and exploring high-performance multifunctional semiconductor materials.

Graphical abstract: Halogen engineering tuned band gap and structural phase transition in lead iodide hybrid perovskite semiconductors

Supplementary files

Article information

Article type
Paper
Submitted
23 Oct 2024
Accepted
03 Dec 2024
First published
05 Dec 2024

New J. Chem., 2025,49, 600-604

Halogen engineering tuned band gap and structural phase transition in lead iodide hybrid perovskite semiconductors

H. Hu, Y. Xu, S. Yuan, J. Ma, G. Xia, S. Shi, Z. Zhou, J. Yuan and L. Yu, New J. Chem., 2025, 49, 600 DOI: 10.1039/D4NJ04595E

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