Unveiling interfacial dynamics of zero-dimensional bismuth-based halide perovskite emitters for electrochemiluminescence applications
Journal
Journal of Materials Chemistry A
Journal Volume
13
Journal Issue
13
Start Page
9332
End Page
9338
ISSN
2050-7488
2050-7496
Date Issued
2025-01-31
Author(s)
Chun Hong Mak
Yaojia Ai
Shun Cheung Cheng
Wenxin Niu
Minshu Du
Guohua Jia
Xue-Qing Xu
Zheng Hu
Chi Chiu Ko
Guizheng Zou
Duu-Jong Lee
Hsien-Yi Hsu
Abstract
Organic-inorganic halide perovskites have emerged as a novel category of optoelectronic materials owing to their exceptional physical and chemical properties. Notably, zero-dimensional (0-D) dimethylammonium bismuth iodide (DMA3BiI6) perovskite is an emerging candidate for electrochemiluminescence (ECL) light-emitting applications. Herein, we design 0-D DMA3BiI6 perovskite emitters and provide a detailed analysis of exciton transport dynamics through temperature-dependent transient photoluminescence (TRPL) and charge transport kinetics by electrochemical ECL techniques. Efficient exciton transport has been substantiated by the reduced activation energy and enhanced electronic coupling. Based on the diffusion coefficient and electron-transfer rate through electrochemical methods, we demonstrate that effective heterogeneous charge transfer at the electrode-electrolyte interface leads to red-shifted ECL emission with the addition of the tripropylamine (TPrA) co-reactant. As a result, the creation of zero-dimensional perovskite emitters paves the way for advancements in the rapidly evolving fields of optoelectronic and biosensing technologies, including but not limited to ECL devices, ECL immunoassays, light-emitting electrochemical cells, organic light-emitting diodes, and perovskite-based light-emitting diodes.
Publisher
Royal Society of Chemistry (RSC)
Type
journal article