3D Perovskite Passivation with a Benzotriazole-Based 2D Interlayer for High-Efficiency Solar Cells

被引：11

作者：

Caiazzo, Alessandro ^{[1
]}

Maufort, Arthur ^{[2
]}

van Gorkom, Bas T. ^{[1
]}

Remmerswaal, Willemijn H. M. ^{[1
]}

Orri, Jordi Ferrer ^{[3
,4
]}

Li, Junyu ^{[1
]}

Wang, Junke ^{[1
]}

van Gompel, Wouter T. M. ^{[2
]}

Van Hecke, Kristof ^{[5
]}

Kusch, Gunnar ^{[3
]}

Oliver, R. A. ^{[3
]}

Ducati, Caterina ^{[3
]}

Lutsen, Laurence ^{[2
]}

Wienk, Martijn M. ^{[1
]}

Stranks, Samuel D. ^{[4
,6
]}

Vanderzande, Dirk ^{[2
]}

Janssen, Rene A. J. ^{[1
,7
]}

机构：

[1] Eindhoven Univ Technol, Mol Mat & Nanosyst & Inst Complex Mol Syst, NL-5600 MB Eindhoven, Netherlands

[2] Hasselt Univ, Inst Mat Res IMO IMOMEC, Hybrid Mat Design, B-3500 Hasselt, Belgium

[3] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England

[4] Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB3 0HE, England

[5] Univ Ghent, Dept Chem, XStruct, B-9000 Ghent, Belgium

[6] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[7] Dutch Inst Fundamental Energy Res, NL-5612 AJ Eindhoven, Netherlands

来源：

ACS APPLIED ENERGY MATERIALS | 2023年 / 6卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

2D perovskites; passivation; solar cells; FAPbI3; benzotriazole; ENABLES;

D O I：

10.1021/acsaem.3c00101

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

2H-Benzotriazol-2-ylethylammonium bromide and iodide and its difluorinated derivatives are synthesized and employed as interlayers for passivation of formamidinium lead triiodide (FAPbI3) solar cells. In combination with PbI2 and PbBr2, these benzotriazole derivatives form two-dimensional (2D) Ruddlesden-Popper perovskites (RPPs) as evidenced by their crystal structures and thin film characteristics. When used to passivate n-i-p FAPbI3 solar cells, the power conversion efficiency improves from 20% to close to 22% by enhancing the open-circuit voltage. Quasi-Fermi level splitting experiments and scanning electron microscopy cathodoluminescence hyperspectral imaging reveal that passivation provides a reduced nonradiative recombi-nation at the interface between the perovskite and hole transport layer. Photoluminescence spectroscopy, angle-resolved grazing-incidence wide-angle X-ray scattering, and depth profiling X-ray photoelectron spectroscopy studies of the 2D/three-dimensional (3D) interface between the benzotriazole RPP and FAPbI3 show that a nonuniform layer of 2D perovskites is enough to passivate defects, enhance charge extraction, and decrease nonradiative recombination.

引用

页码：3933 / 3943

页数：11

共 36 条

[1] In Situ Growth of 2D Perovskite Capping Layer for Stable and Efficient Perovskite Solar Cells [J].