Journal
NANOPHOTONICS
Volume 10, Issue 8, Pages 1967-1975Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2020-0631
Keywords
bridge-barrier effect; CsPbBr3 nanocrystals; electron transfer; ligand-bridge
Categories
Funding
- National Key R&D Program of China [2017YFA0207400]
- National Natural Science Foundation of China [61604032, 61905037]
- Fundamental Research Funds for the Central Universities of China [ZYGX2019J028]
- China Postdoctoral Science Foundation [2020M683281]
Ask authors/readers for more resources
The study demonstrates the modulation of electron transfer rates from CsPbBr3 PeNCs to mesoporous titanium dioxide films using different surface ligands, showing a potential perspective for designing appropriate ligands for diverse practical purposes.
Y In most perovskite nanocrystal (PeNC)-based optoelectronic and photonic applications, surface ligands inevitably lead to a donor-bridge-acceptor charge transfer configuration. In this article, we demonstrate successful modulation of electron transfer (ET) rates from all-inorganic CsPbBr3 PeNCs to mesoporous titanium dioxide films, by using different surface ligands including single alkyl chain oleic acid and oleylamine, cross-linked insulating (3-aminopropyl)triethoxysilane and aromatic naphthoic acid molecules as the ligand-bridge. We systematically investigated the ET process through time-resolved photoluminescence spectroscopy. Calculations verified the ligand-bridge barrier effect of the three species upon the ET process. Transient absorption measurements excluded carrier-delocalization effect of the naphthoic acid ligands and confirmed the bridge-barrier effect. Our work provides a perspective for composable and appropriate ligands design for diverse practical purposes.
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