Trap passivation and suppressed electrochemical dynamics in perovskite solar cells with C60 interlayers

被引：9

作者：

Tulus ^{[1
,2
]}

Muscarella, Loreta A. ^{[3
,4
]}

Galagan, Yulia ^{[5
,6
]}

Boehme, Simon Christian ^{[1
,10
,11
]}

von Hauff, Elizabeth ^{[1
,7
,8
,9
]}

机构：

[1] Vrije Univ Amsterdam, Fac Sci, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands

[2] Natl Res & Innovat Agcy BRIN, Res Ctr Adv Mat, Jakarta 10340, Indonesia

[3] AMOLF, Ctr Nanophoton, Sci Pk 104, NL-1098 XG Amsterdam, Netherlands

[4] Univ Utrecht, Dept Chem, Princetonlaan 8, NL-3584 CB Utrecht, Netherlands

[5] TNO Solliance, NL-5656 AE Eindhoven, Netherlands

[6] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan

[7] Fraunhofer Inst Organ Elect Electron Beam & Plasma, Dresden, Germany

[8] Tech Univ Dresden, Fac Elect & Comp Engn, Dresden, Germany

[9] Fraunhofer Inst Organ Elect Electron Beam & Plasma, Fraunhofer Inst Organ Elekt Elektronenstrahl & Pla, Winterbergstr 28, Dresden, Germany

[10] Swiss Fed Inst Technol, Dept Chem & Appl Biosci, Lab Inorgan Chem, CH-8093 Zurich, Switzerland

[11] Empa Swiss Fed Labs Mat Sci & Technol, CH-8600 Dubendorf, Switzerland

来源：

ELECTROCHIMICA ACTA | 2022年 / 433卷

关键词：

C60; ZnO; Transport layer; Perovskite; Impedance spectroscopy; Equivalent circuit model; Solar cell; HALIDE PEROVSKITES; EFFICIENT; PERFORMANCE; FILMS; SEGREGATION; STABILITY; ORIGIN; IMPACT; LAYERS; C-60;

D O I：

10.1016/j.electacta.2022.141215

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this study, we quantify the impact of C60-passivation layers in Cs0.15FA0.85PbI2.75Br0.25 double-cation perov-skite solar cells. We apply a combination of impedance spectroscopy, photoluminescence (PL) spectroscopy, and X-ray diffraction (XRD) to identify the origin for the increase in power conversion efficiencies and operational stability for solar cells fabricated with C60/ZnO electron transport layer (ETL) versus reference cells with a ZnO ETL. XRD reveals an increase in PbI2 while PL spectroscopy reveals an increase in Br-rich regions in the perovskite bulk in devices containing C60 interlayers. We apply impedance spectroscopy to quantify the elec-trochemical dynamics in both solar cell architectures. Solar cells with C60/ZnO ETL demonstrate less pronounced and slower electrochemical dynamics in the impedance spectra than solar cells with ZnO ETL. We conclude that C60 leads to the formation of PbI2-rich and Br-rich domains in the perovskite absorber layer, resulting in reduced recombination losses and improved operational stability.

引用

页数：10

共 65 条

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