Enhanced performance of perovskite solar cells via reactive post-treatment process utilizing guanidine acetate as interface modifier

Patil, Pramila, Mann, Dilpreet Singh, Rondiya, Sachin R., Dzade, Nelson Y. ORCID: https://orcid.org/0000-0001-7733-9473, Kwon, Sung-Nam and Na, Seok-In 2021. Enhanced performance of perovskite solar cells via reactive post-treatment process utilizing guanidine acetate as interface modifier. Solar RRL 5 (11) , 2100547. 10.1002/solr.202100547

Full text not available from this repository.

Abstract

Organic–inorganic lead halide perovskites (OIHPs) have emerged as promising materials for next-generation photovoltaics. However, performance improvements in the perovskite-based device are still limited due to defects that exist more intensively on the surface as well as grain boundaries (GBs) and mismatching energy levels at the interface. Herein, a reactive post-treatment process (RPP) using guanidine acetate (GA) is adopted to address defects and interfacial energy level matching at the perovskite surface. The RPP with GA (GA-RPP) results in the formation of an improved perovskite layer with large grain size and low GB density, leading to the formation of secondary phases on the perovskite surface with appropriate energy levels, resulting in reduced defect density and charge recombination. Furthermore, density functional theory analysis reveals that the Pb-rich secondary phase could improve the conduction of electrons at the perovskite interface. Therefore, the GA-RPP-based perovskite-based solar cell (PSC) shows enhanced performance with 20.4% efficiency and long-term stability.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Advanced Research Computing @ Cardiff (ARCCA)
Publisher:	Wiley
ISSN:	2367-198X
Last Modified:	17 Mar 2023 15:45
URI:	https://orca.cardiff.ac.uk/id/eprint/148264

Citation Data

Cited 4 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item