Highly Stable and Efficient Perovskite Solar Cells with 22.0% Efficiency Based on Inorganic-Organic Dopant-Free Double Hole Transporting Layers

Liu, Chang1,2,3; Zhang, Luozheng1,2,3; Li, Yan2,3; Zhou, Xianyong2,3; She, Suyang2,3; Wang, Xingzhu1,2,3; Tian, Yanqin2,3; Jen, Alex K. Y.4,5; Xu, Baomin2,3

2020-05-13

10.1002/adfm.201908462

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

Most of the high performance in perovskite solar cells (PSCs) have only been achieved with two organic hole transporting materials: 2,2 ',7,7 '-tetrakis(N,N-di-p-methoxyphenylamine)-9,9-spirobifluorene (Spiro-OMeTAD) and poly(triarylamine) (PTAA), but their high cost and low stability caused by the hygroscopic dopant greatly hinder the commercialization of PSCs. One effective alternative to address this problem is to utilize inexpensive inorganic hole transporting layer (i-HTL), but obtaining high efficiency via i-HTLs has remained a challenge. Herein, a well-designed inorganic-organic double HTL is constructed by introducing an ultrathin polymer layer dithiophene-benzene (DTB) between CuSCN and Au contact. This strategy not only enhances the hole extraction efficiency through the formation of cascaded energy levels, but also prevents the degradation of CuSCN caused by the reaction between CuSCN and Au electrode. Furthermore, the CuSCN layer also promotes the formation of a pinhole-free and compact DTB over layer in the CuSCN/DTB structure. Consequently, the PSCs fabricated with this CuSCN/DTB layer achieves the power conversion efficiency of 22.0% (certified: 21.7%), which is among the top efficiencies for PSCs based on dopant-free HTLs. Moreover, the fabricated PSCs exhibit high light stability under more than 1000 h of light illumination and excellent environmental stability at high temperature (85 degrees C) or high relative humidity (>60% RH).

dopant-free double hole transporting layers high efficiency perovskite solar cells stabilities

SCI ; EI

英语

NI期刊 ; NI论文

第一 ; 通讯

National Key Research and Development Project from the Ministry of Science and Technology of China[2016YFA0202400][2016YFA0202404] ; National Natural Science Foundation of China[61904076] ; Peacock Team Project from Shenzhen Science and Technology Innovation Committee[KQTD2015033110182370] ; Shenzhen Engineering R&D Center for Flexible Solar Cells project from Shenzhen Development and Reform Committee[2019-126] ; Fundamental Research (Discipline Arrangement) Project from Shenzhen Science and Technology Innovation Committee[JCYJ20170412154554048]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000531908600001

WILEY-V C H VERLAG GMBH

20202008653803

Copper compounds ; Gold ; Perovskite ; Hole mobility

Minerals:482.2 ; Precious Metals:547.1 ; Solar Cells:702.3 ; Semiconducting Materials:712.1

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, SUSTech Acad Adv Interdisciplinary Studies, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Engn Res & Dev Ctr Flexible Solar Cells, Shenzhen 518055, Guangdong, Peoples R China
4.Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA
5.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China

Liu, Chang,Zhang, Luozheng,Li, Yan,et al. Highly Stable and Efficient Perovskite Solar Cells with 22.0% Efficiency Based on Inorganic-Organic Dopant-Free Double Hole Transporting Layers[J]. ADVANCED FUNCTIONAL MATERIALS,2020,30(28).

Liu, Chang.,Zhang, Luozheng.,Li, Yan.,Zhou, Xianyong.,She, Suyang.,...&Xu, Baomin.(2020).Highly Stable and Efficient Perovskite Solar Cells with 22.0% Efficiency Based on Inorganic-Organic Dopant-Free Double Hole Transporting Layers.ADVANCED FUNCTIONAL MATERIALS,30(28).

Liu, Chang,et al."Highly Stable and Efficient Perovskite Solar Cells with 22.0% Efficiency Based on Inorganic-Organic Dopant-Free Double Hole Transporting Layers".ADVANCED FUNCTIONAL MATERIALS 30.28(2020).