Unraveling the Molecular Size Effect on Surface Engineering of Perovskite Solar Cells.
Small Methods
; : e2400043, 2024 Mar 11.
Article
en En
| MEDLINE
| ID: mdl-38462962
ABSTRACT
Surface engineering in perovskite solar cells, especially for the upper surface of perovskite, is widely studied. However, most of these studies have primarily focused on the interaction between additive functional groups and perovskite point defects, neglecting the influence of other parts of additive molecules. Herein, additives with -NH3 + functional group are introduced at the perovskite surface to suppress surface defects. The chain lengths of these additives vary to conduct a detailed investigation into the impact of molecular size. The results indicate that the propane-1,3-diamine dihydroiodide (PDAI2 ), which possesses the most suitable size, exhibited obvious optimization effects. Whereas the molecules, methylenediamine dihydroiodide (MDAI2 ) and pentane-1,5-diamine dihydroiodide (PentDAI2 ) with unsuitable size, lead to a deterioration in device performance. The PDAI2 -treated devices achieved a certified power conversion efficiency (PCE) of 25.81% and the unencapsulated devices retained over 80% of their initial PCE after 600 h AM1.5 illumination.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Small Methods
Año:
2024
Tipo del documento:
Article
Pais de publicación:
Alemania