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ACS Applied Materials & Interfaces

ACS Applied Materials & Interfaces

IF: 8.3
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Formamidine Acetate Induces Regulation of Crystallization and Stabilization in Sn-Based Perovskite Solar Cells

Published:6 July 2021 DOI: 10.1021/acsami.1c05097 PMID: 34228914
Ruoyao Xu, Hua Dong*, Peizhou Li, Xiangrong Cao, Haomiao Li, Jingrui Li, Zhaoxin Wu*

Abstract

Sn-based perovskite solar cells (PSCs) have received extensive attention for photovoltaic applications. Nevertheless, the low crystallization quality of the film due to rapid crystallization results in high trap density of states, which is one of the main reasons for poor performance of Sn-based PSC devices. In this work, we developed a strategy for the formation of FASnI3 perovskites by introducing the addition of formamidine acetate (FAAc). Benefiting from the iodide-coordinated cation (FA+) and crystallization-regulated anion (AC), FAAc could achieve the high-quality films with suppressed defects. The champion power conversion efficiency (PCE) of FAAc-modified PSC devices reached 9.96%, reserving 82% of their initial PCE of the light aging test over 1500 h. We hope that our finding could provide implications on the high-performance and stable Sn-based PSCs.

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Procduct Name CAS Molecular Formula Supplier Price
Formamidine acetate 3473-63-0 C3H8N2O2 608 suppliers $3.00-$4447.76
FORMAMIDINE ACETATE 40730-94-7 C3H8N2O2 15 suppliers Inquiry

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