0D Cs3Cu2X5 (X = I, Br, and Cl) Nanocrystals: Colloidal Syntheses and Optical Properties

Luo, Zhishan1,2; Li, Qian1,2; Zhang, Liming1; Wu, Xiaotong1; Tan, Li1; Zou, Chao1; Liu, Yejing1; Quan, Zewei1

2019-12-13

10.1002/smll.201905226

Small   影响因子和分区

1613-6810

1613-6829

0D lead-free metal halide nanocrystals (NCs) are an emerging class of materials with intriguing optical properties. Herein, colloidal synthetic routes are presented for the production of 0D Cs3Cu2X5 (X = I, Br, and Cl) NCs with orthorhombic structure and well-defined morphologies. All these Cs3Cu2X5 NCs exhibit broadband blue-green photoluminescence (PL) emissions in the range of 445-527 nm with large Stokes shifts, which are attributed to their intrinsic self-trapped exciton (STE) emission characteristics. The high PL quantum yield of 48.7% is obtained from Cs3Cu2Cl5 NCs, while Cs3Cu2I5 NCs exhibit considerable air stability over 45 days. Intriguingly, as X is changed from I to Br and Cl, Cs3Cu2X5 NCs exhibit a continuous redshift of emission peaks, which is contrary to the blueshift in CsPbX3 perovskite NCs.

colloidal syntheses lead-free metal halides low-dimensional materials nanocrystals optical properties

SCI ; EI

英语

第一 ; 通讯

Australian Government[2017YFE0132300]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000502353900001

WILEY-V C H VERLAG GMBH

20195107839033

Chlorine compounds ; Excitons ; Lead compounds ; Metal halides ; Nanocrystals ; Optical properties ; Perovskite

Minerals:482.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Chemical Products Generally:804

Web of Science

1.Southern Univ Sci & Technol SUSTech, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol SUSTech, Acad Adv Interdisciplinary Studies, Shenzhen Engn Res Ctr Frontier Mat Synth High Pre, Shenzhen 518055, Guangdong, Peoples R China

Luo, Zhishan,Li, Qian,Zhang, Liming,et al. 0D Cs3Cu2X5 (X = I, Br, and Cl) Nanocrystals: Colloidal Syntheses and Optical Properties[J]. Small,2019,16(3).

Luo, Zhishan.,Li, Qian.,Zhang, Liming.,Wu, Xiaotong.,Tan, Li.,...&Quan, Zewei.(2019).0D Cs3Cu2X5 (X = I, Br, and Cl) Nanocrystals: Colloidal Syntheses and Optical Properties.Small,16(3).

Luo, Zhishan,et al."0D Cs3Cu2X5 (X = I, Br, and Cl) Nanocrystals: Colloidal Syntheses and Optical Properties".Small 16.3(2019).