Low-Cost Hydroxyacid Potassium Synergists as an Efficient In Situ Defect Passivator for High Performance Tin-Oxide-Based Perovskite Solar Cells.
Angew Chem Int Ed Engl
; 62(25): e202302507, 2023 Jun 19.
Article
em En
| MEDLINE
| ID: mdl-37067196
ABSTRACT
Perovskite solar cells (PSCs) based on SnO2 electron transport layers have attracted extensive research due to their compelling photovoltaic performance. Herein, we presented an in situ passivation of SnO2 with low-cost hydroxyacid potassium synergist during deposition to optimize the interface carrier extraction and transport for high power conversion efficiency (PCE) and stabilities of PSCs. The orbital overlap of the carboxyl oxygen with the Sn atom alongwith the homogenous nano-particle deposition effectively suppresses the interfacial defects and releases the internal residual strains in the perovskite. Accordingly, a PCE of 24.91 % with a fill factor (FF) up to 0.852 is obtained for in situ passivated devices, which is one of the highest values for SnO2 -based PSCs. Moreover, the unencapsulated device maintained 80 % of its initial PCE at 80 °C over 600â
h, 100 % PCE at ambient conditions for 1300â
h, and 98 % after one week maximum power point tracking (MPPT) under continuous AM1.5G illumination.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Estanho
/
Hidroxiácidos
Tipo de estudo:
Health_economic_evaluation
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article