Approaching the Most Economic Preparation of Hole Transport Layer by Organic Monomolecular Strategy for Efficient Inverted Perovskite Solar Cells

Liu Hui1,2; Liu Changwen1,2; Li Wang1,2; Kong Weiguang1,2; Chen Hong1,2; Zhang Haichao1,2; Zhang Xian1,2; Wang Weijun1,2; Cheng Chun1,2,3

2020-05-13

10.1002/solr.202000011

Solar RRL   影响因子和分区

2367-198X

Hole transport materials and their processing occupy at least one-third of the cost of perovskite solar cells (PSCs), which leaves plenty of room to improve the process of device fabrication. Herein, a facile immersing and washing strategy (I-method) is reported to prepare effective organic monomolecular layers (MLs) of poly[N,N '-bis(4-butylphenyl)-N,N '-bis(phenyl) benzidine] (polyTPD) as hole transport layers (ML-HTLs) to construct cost-effective planar inverted PSCs. The ML enables an enhanced wettability to perovskite precursors and thus results in the growth of compact and uniform perovskite films. In addition, the ML exhibits better energy-level alignment with perovskite. Consequently, the ML-polyTPD-based PSCs deliver significantly enhanced power conversion efficiency (PCE) and reproducibility, as compared to that of pristine polyTPD based devices. The practical consumption of polyTPD during the I-method is cut to the bone, with the cost of $0.8 for 1 m(2) substrate being achieved, which is 0.15% of that by S-method. The developed I-method is facile, and time- and cost-saving with low requirement for facilities as well as with low temperature and solution processability. This strategy is cost-effective to prepare ML-HTLs for large-area and flexible PSCs with competitive photovoltaic performance and enhanced reproducibility.

energy-level alignment hole transport layers inverted perovskite solar cells organic monomolecular layer polyTPD

SCI ; EI

英语

第一 ; 通讯

Guangdong High-level Personnel of Special Support Program-Outstanding young scholar in science and technology innovation[2015TQ01C543] ; National Key Research and Development Project funding from the Ministry of Science and Technology of China[2016YFA0202400][2016YFA0202404] ; Peacock Team Project funding from Shenzhen Science and Technology Innovation Committee[KQTD2015033110182370] ; National Natural Science Foundation of China[51776094] ; Guangdong Natural Science Funds for Distinguished Young Scholars[2015A030306044] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001] ; Shenzhen Engineering R&D Center for Flexible Solar Cells Project funding from Shenzhen Development and Reform Committee[2019-126]

Energy & Fuels ; Materials Science

Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000531851700001

WILEY-V C H VERLAG GMBH

20202008657236

Hole mobility ; Cost effectiveness ; Perovskite ; Temperature

Minerals:482.2 ; Thermodynamics:641.1 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Industrial Economics:911.2

Web of Science

1.Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol SUSTech, Shenzhen Engn Res & Dev Ctr Flexible Solar Cells, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol SUSTech, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen 518055, Peoples R China

Liu Hui,Liu Changwen,Li Wang,et al. Approaching the Most Economic Preparation of Hole Transport Layer by Organic Monomolecular Strategy for Efficient Inverted Perovskite Solar Cells[J]. Solar RRL,2020,4(6).

Liu Hui.,Liu Changwen.,Li Wang.,Kong Weiguang.,Chen Hong.,...&Cheng Chun.(2020).Approaching the Most Economic Preparation of Hole Transport Layer by Organic Monomolecular Strategy for Efficient Inverted Perovskite Solar Cells.Solar RRL,4(6).

Liu Hui,et al."Approaching the Most Economic Preparation of Hole Transport Layer by Organic Monomolecular Strategy for Efficient Inverted Perovskite Solar Cells".Solar RRL 4.6(2020).