Phenylethylammonium bromide-assisted solution-phase ligand exchange in CsPbBr3quantum dot solar cells.
Nanotechnology
; 35(40)2024 Jul 19.
Article
en En
| MEDLINE
| ID: mdl-38991512
ABSTRACT
CsPbBr3quantum dots (QDs) have excellent optical properties and good phase stability, but the long-chain ligands on their surfaces affect the charge transfer between QDs. Here, we propose a simple ligand exchange strategy solution-phase ligand exchange. By adding an acetone solution of phenylethylammonium bromide to the purification process of CsPbBr3QDs, the long-chain ligands were effectively replaced and the electric coupling between QDs was improved. As a result, the power conversion efficiency of the solar cell was increased from 1.95% to 2.83%. Meanwhile, the stability of the devices was significantly improved in the unencapsulated case.
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Colección:
01-internacional
Banco de datos:
MEDLINE
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En
Revista:
Nanotechnology
Año:
2024
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Article