Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 8, Issue 29, Pages 9968-9974Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0tc01822h
Keywords
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Funding
- National Natural Science Foundation of China (NSFC) [51932009, 51772288, 51720105015, 51750110511, 51672259]
- Science and Technology Development Planning Project of Jilin Province [20170101187JC, 20170414003GH]
- Chinese Government [2017YFE0132300]
- Australian Government [2017YFE0132300]
- Jiangmen Innovative Research Team Program (2017)
- Major program of basic research and applied research of Guangdong Province [2017KZDXM083]
- Key Research Program of Frontier Sciences, CAS [YZDY-SSW-JSC018]
- CAS-Croucher Funding Scheme for Joint Laboratories [CAS18204]
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Perovskite nanocrystals (NCs) have aroused wide interest in the field of optoelectronics. Herein, a quantitative post-processing method is proposed to precisely alter the photoluminescence of lead halide perovskite NCs by ligand substitution using a multidentate multifunctional polymer ligand with amide, carboxylic acid and terminal double bond groups. Surprisingly, the synergistic effect of the ligand leads to a continuously blue-shifted emission over a wide visible region (similar to 100 nm) with increasing addition of the polymer ligand. Moreover, the full width at half maximum (fwhm) also gradually narrows, indicating the formation of a uniform particle size after the ligand surface interaction. Simultaneously, the terminal double bonds can be cross-linked with styrene to protect perovskite NCs from moisture. These results provide a new route for controllable photoluminescence regulation and preliminarily explore the correlation between the luminescence properties of perovskite NCs and polymer ligands.
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