Reduced Graphene Oxide Improves Moisture and Thermal Stability of Perovskite Solar Cells

被引：35

作者：

Kim, Hui-Seon ^{[1
]}

Yang, Bowen ^{[2
]}

Stylianakis, Minas M. ^{[3
]}

Kymakis, Emmanuel ^{[3
]}

Zakeeruddin, Shaik M. ^{[4
]}

Graetzel, Michael ^{[4
]}

Hagfeldt, Anders ^{[2
]}

机构：

[1] Inha Univ, Dept Chem, Incheon 22212, South Korea

[2] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, Sch Basic Sci, CH-1015 Lausanne, Switzerland

[3] Hellen Mediterranean Univ, Dept Elect & Comp Engn, Iraklion 71410, Greece

[4] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photon & Interfaces, Sch Basic Sci, CH-1015 Lausanne, Switzerland

来源：

CELL REPORTS PHYSICAL SCIENCE | 2020年 / 1卷 / 05期

基金：

欧盟地平线“2020”;

关键词：

HOLE TRANSPORTING MATERIAL; HIGHLY EFFICIENT; EXTRACTION; PERFORMANCE; DERIVATIVES;

D O I：

10.1016/j.xcrp.2020.100053

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reduced graphene oxide (rGO) is a very stable material with tunable electronic properties dependent on its reduction level. Nevertheless, the incorporation of rGO into perovskite solar cells (PSCs) frequently demonstrates inconsistent results, and it plays an ambiguous role. Here, we systematically explore rGO as an additive in perovskite and 2,2',7,7'-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene (spiro-MeOTAD) using different reduction levels (O18.42%, O9.67%, and O7.14%). Perovskite with rGO(O9)(.67%) results in the most stable shelf stability, demonstrating a negligible performance degradation over 430 h, while the one without rGO shows a 6.4% drop, mainly due to fill-factor deterioration. Moreover, the improved stability is more pronounced when rGO(O9)(.67%) is employed with spiro-MeOTAD where crystallization is effectively retarded. The integrated effect is also observed in PSCs based on rGO(O)(9.67%) in both perovskite and spiro-MeOTAD, leading to enhanced stability at 85 degrees C and 45% relative humidity.

引用

页数：12

共 39 条

[1] Comparison of mechanical, electrical and thermal properties in graphene oxide and reduced graphene oxide filled epoxy nanocomposite adhesives [J].