Work

Lead-Free Organic Manganese (II) Bromide Hybrid with Highly Efficient and Stable Green Emission for UV Photodetection

Year: 2023

Type: article

Abstract: Lead halide perovskites have been widely used in optoelectronic devices due to their excellent properties; however, the toxicity of lead and the poor stability of these perovskites hinder their further application. Herein, we report a zero-dimensional (0D) lead-free organic manganese (II) bromide hybrid compound of (TBA)2MnBr4 (TBA+ = tetrabutylammonium cation) single crystals (SCs) with great environmental stability. The (TBA)2MnBr4 SCs show a strong green emission peak at 518 nm with a high photoluminescence quantum yield (PLQY) of 84.98% at room temperature, which is attributed to the d-d transition of single Mn2+ ions, as also confirmed through density functional calculation. A green light-emitting diode was produced based on (TBA)2MnBr4 SCs, which exhibited CIE coordinates (0.17, 0.69) close to those of standard green. A photodetector fabricated by the (TBA)2MnBr4 SCs shows an obvious photo response with a rapid millisecond rise/decay response time (at 365 nm). Our findings promote the research of Mn(II)-based organic–inorganic hybrid materials and pave the way by using these materials for future high-performance optoelectronic devices.

Source: Crystals

DOI: 10.3390/cryst13121678

Authors: Ye Tian, Qilin Wei, Lian Duan, Chengyu Peng

Institutions: North University of China, Shandong University, Guangxi Transport Vocational and Technical College

Language: English

Topic: Perovskite Materials and Applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,224

Funder: National Natural Science Foundation of China