Tuneable Efficient White Emission of Sb3+/Mn2+ Co-Doped Lead-Free Perovskites for Single-Component White Light-Emitting Diodes

Yuanyuan Sheng; Ping Chen; Yanpeng Gao; Yong He; Junchun Li; Muhammad; Xiang Xie; Chen Cheng; Jingting Yang; Yajing Chang; Guoqing Tong; Yang Jiang

doi:10.1021/acsami.4c00745

Tuneable Efficient White Emission of Sb³⁺/Mn²⁺ Co-Doped Lead-Free Perovskites for Single-Component White Light-Emitting Diodes

ACS Appl Mater Interfaces. 2024 Apr 17;16(15):19175-19183. doi: 10.1021/acsami.4c00745. Epub 2024 Apr 4.

Authors

Yuanyuan Sheng¹, Ping Chen^{1

2}, Yanpeng Gao¹, Yong He¹, Junchun Li¹, Muhammad¹, Xiang Xie³, Chen Cheng⁴, Jingting Yang¹, Yajing Chang⁵, Guoqing Tong¹, Yang Jiang¹

Affiliations

¹ School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China.
² The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, People's Republic of China.
³ Jianghuai Advance Technology Center, Hefei 230000, People's Republic of China.
⁴ School of Microelectronics, Hefei University of Technology, Hefei 230009, People's Republic of China.
⁵ State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Hefei 230037, People's Republic of China.

PMID: 38573052
DOI: 10.1021/acsami.4c00745

Abstract

Inorganic lead-free perovskite nanocrystals (NCs) with broadband self-trapped exciton (STEs) emission and low toxicity have shown enormous application prospects in the field of display and lighting. However, white light-emitting diodes (WLEDs) based on a single-component material with high photoluminescence quantum yield (PLQY) remain challenging. Here, we demonstrate a novel codoping strategy by introducing Sb³⁺/Mn²⁺ ions to achieve the tuneable dual emission in lead-free perovskite Cs₃InCl₆ NCs. The PLQY increases to 59.64% after doping with Sb³⁺. The codoped Cs₃InCl₆ NCs exhibit efficient white light emission due to the energy transfer channel from STEs to Mn²⁺ ions with PLQY of 51.38%. Density functional theory (DFT) calculations have been used to verify deeply the effects of Sb³⁺/Mn²⁺ doping. WLEDs based on Sb³⁺/Mn²⁺-codoped Cs₃InCl₆ NCs are explored with color rendering index of 85.5 and color coordinate of (0.398, 0.445), which have been successfully applied as photodetector lighting sources. This work provides a new perspective for designing novel lead-free perovskites to achieve single-component WLEDs.

Keywords: dual band emission; energy transfer; lead-free perovskite; self-trapped excitons; white light-emitting diodes.