Stabilized Perovskite Quantum Dot Solids via Nonpolar Solvent Dispersible Covalent Ligands.

ABSTRACT: The ligand exchange procedure of CsPbI₃ perovskite quantum dots (PQDs) enables the fabrication of thick and conductive PQD solids that act as a photovoltaic absorber for solution-processed thin-film solar cells. However, the ligand-exchanged CsPbI₃ PQD solids suffer from deterioration in photovoltaic performance and ambient stability due to the surface traps, such as uncoordinated Pb²⁺ sites on the PQD surface, which are generated after the conventional ligand exchange process using ionic short-chain ligands dissolved in polar solvents. Herein, a facile surface stabilization is demonstrated that can simultaneously improve the photovoltaic performance and ambient stability of CsPbI₃ PQD photovoltaic absorber using covalent short-chain triphenylpho

SUBMITTER: Han S 

PROVIDER: S-EPMC10427392 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature