Ultrasound-assisted nucleation and growth of hydroxyl-protected and ligand-free Cs₃Cu₂X₅ nanocrystals with bright luminescence

Xu, Zhiqun1; Luo, Dengfeng2,5; Wu, Pei3; Hou, Bo1; Zhang, Zhihao1; Wang, Shuqiang4; Gao, Teng4; Huang, Guobin4; Fang, Lan1

2024-07-01

10.1039/d4cp02172j

PHYSICAL CHEMISTRY CHEMICAL PHYSICS   影响因子和分区

1463-9076

1463-9084

The commercial applications of lead halide perovskites are hindered by their negative environmental impact and inherent instability. Consequently, developing environmentally friendly copper-based perovskite materials is crucial for future solid-state lighting and display applications. In this study, an ultrafast high-power ultrasonic synthesis strategy was utilized to achieve uniform nucleation and growth of Cs3Cu2X5 (X = Cl, Br, I) nanocrystals (NCs) that possess remarkable luminescence properties, hydroxyl protection, and ligand-free characteristics. These Cs3Cu2X5 NCs exhibited a tunable spectral range spanning from 446 to 525 nm, accompanied by photoluminescence quantum yields (PLQYs) varying from 0.2% to 79.2%. The spectral attributes of the NCs were effectively controlled by modulating the halide type and composition. It is worth noting that density functional theory (DFT) calculations offer valuable insights into the synthesis of NCs and the selection of suitable alcohol solvents. Moreover, we successfully fabricated an efficient and stable white light-emitting diode (WLED) with a high luminous efficiency of 23 lm W-1 and CIE color coordinates of (0.3266, 0.3487). Our work provides a new strategy to synthesize Cs3Cu2X5 NCs and holds promise for their potential application in display and lighting devices.

SCI ; EI

英语

其他

Jiangsu Province vocational college young teachers enterprise practice training project[2023QYSJ086] ; Taicang Basic Research Project[TC2022JC30] ; Open Project Program of Key Laboratory for Analytical Science of Food Safety and Biology, Ministry of Education[FS2213]

Chemistry ; Physics

Chemistry, Physical ; Physics, Atomic, Molecular & Chemical

WOS:001275283200001

ROYAL SOC CHEMISTRY

CHEMISTRY

Web of Science

1.Suzhou Chien Shiung Inst Technol, Taicang 215411, Peoples R China
2.Peng Cheng Lab, Shenzhen 518055, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Fuzhou Univ, Inst Food Safety & Environm Monitoring, Fuzhou 350108, Peoples R China
5.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Xu, Zhiqun,Luo, Dengfeng,Wu, Pei,et al. Ultrasound-assisted nucleation and growth of hydroxyl-protected and ligand-free Cs₃Cu₂X₅ nanocrystals with bright luminescence[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2024.

Xu, Zhiqun.,Luo, Dengfeng.,Wu, Pei.,Hou, Bo.,Zhang, Zhihao.,...&Fang, Lan.(2024).Ultrasound-assisted nucleation and growth of hydroxyl-protected and ligand-free Cs₃Cu₂X₅ nanocrystals with bright luminescence.PHYSICAL CHEMISTRY CHEMICAL PHYSICS.

Xu, Zhiqun,et al."Ultrasound-assisted nucleation and growth of hydroxyl-protected and ligand-free Cs₃Cu₂X₅ nanocrystals with bright luminescence".PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2024).