Acetamidinium-Substituted Methylammonium Lead Iodide Perovskite Solar Cells with Higher Open-Circuit Voltage and Improved Intrinsic Stability.
H-bonding
acetamidinium
cation substitution
halide perovskite
open-circuit voltage
solar cells
stability
Journal
ACS applied materials & interfaces
ISSN: 1944-8252
Titre abrégé: ACS Appl Mater Interfaces
Pays: United States
ID NLM: 101504991
Informations de publication
Date de publication:
25 Mar 2020
25 Mar 2020
Historique:
pubmed:
5
3
2020
medline:
5
3
2020
entrez:
5
3
2020
Statut:
ppublish
Résumé
We report acetamidinium (AA)-substituted methylammonium (MA) lead iodide perovskite solar cells. AA has a restricted C-N bond rotation because of delocalized π-electron cloud over the N-C-N bond and the presence of an additional N-H···I bond (4H-bond in AA as compared to 3H-bond in MA). These bonding structures strengthen the electrostatic interaction and stabilize the AA cation inside the perovskite matrix. AA, a larger cation, is substitutional only up to 10%. Devices made with 10% AA-substituted films show an average
Identifiants
pubmed: 32129058
doi: 10.1021/acsami.0c00663
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM