Journal
NANOSCALE
Volume 13, Issue 3, Pages 1791-1799Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nr07913h
Keywords
-
Categories
Funding
- National Key Research and Development Program of China [2017YFB0404501]
- National Major Fundamental Research Program of China [91833306]
- Natural Science Foundation of Jiangsu Province [BM2012010]
- Priority Academic Program Development of Jiangsu Higher Education Institutions [YX030003]
- National Natural Science Foundation of China [62074083, 62005131, 61705111]
- NUPTSF [NY219158, NY220025]
- Open Foundation from Jilin University [IOSKL2017KF04]
Ask authors/readers for more resources
Introducing the donor-acceptor ligand ABMeoPy to passivate FA(0.8)Cs(0.2)PbBr(3) nanocrystals can greatly enhance their performance, including photoluminescence quantum yield and stability. Passivated nanocrystals exhibit higher maximum luminance and current efficiency in LEDs.
A donor-acceptor ligand, 3-amino-2-bromo-6-methoxypyridine (ABMeoPy), was introduced to passivate FA(0.8)Cs(0.2)PbBr(3) nanocrystals (NCs) by a post-processing method. The donor-acceptor interaction can greatly enhance the coordination bond of pyridine-Pb2+, and improve FA(0.8)Cs(0.2)PbBr(3) NC performance with 95.99% photoluminescence quantum yield (PLQY), 6-month stability in solution, and 26% trap density decrease. In the light of ABMeoPy passivation of FA(0.8)Cs(0.2)PbBr(3) NCs, the maximum luminance, the maximum current efficiency, and EQE of light-emitting diodes (LEDs) increased 69%, 110%, and 111%, respectively. The strategy of using D-A molecules to passivate perovskite NCs is quite simple and effective, which can be widely promoted in perovskite-based LEDs or solar cells.
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
