Journal
SMALL
Volume 16, Issue 3, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201905226
Keywords
colloidal syntheses; lead-free metal halides; low-dimensional materials; nanocrystals; optical properties
Categories
Funding
- National Natural Science Foundation of China (NSFC) [51772142]
- Guangdong Science and Technology Department [2016ZT06C279]
- Shenzhen Science and Technology Innovation Committee [JCYJ20170412152528921, KQTD2016053019134356]
- Development and Reform Commission of Shenzhen Municipality (Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures)
- SUSTech Presidential Fund
- Chinese Government [2017YFE0132300]
- Australian Government [2017YFE0132300]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
