Learning from hole-transporting polymers in regular perovskite solar cells to construct efficient conjugated polyelectrolytes for inverted devices

Zhang，Luozheng1,2,3; Zhou，Xianyong2,3; Xie，Jiaming2,3; Hu，Bihua2,3; Liu，Peiying2,3; Chen，Shi1,2,3; Bae，Sang Hoon4; Kim，Jeehwan4; Dai，Songyuan5; Xu，Baomin2,3

2021-09-15

10.1016/j.cej.2021.129735

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

Owing to its high wettability and the resulting compatibility with the future industrial device fabrication process, the conjugated polyelectrolyte (CPE) has becoming a promising hole-transporting material (HTM) in the inverted perovskite solar cell (iPSC); however, only a few highly efficient CPEs have been reported probably due to the limited pool of molecular designing strategies. Here we construct a CPE named DTB(Na) with the same main-chain of a polymer DTB(EH) that was previously employed as a dopant-free HTM in a highly efficient regular type PSC (rPSC) and with simple water/alcohol soluble side-chains. Compared with its analog bearing the only variation of less thiophene units in the main-chain, DTB(Na) shows stronger capacities of hole-extraction and defect-passivation, which should be ascribed to the more intensive exposure of thiophene functional unit to the perovskite layer. As a result, the DTB(Na) iPSC device presents enhanced values on all the photovoltaic parameters and long-term stability, and a power conversion efficiency of 19.92% is realized. Our results demonstrate the feasibility for efficient polymeric HTMs in rPSCs and iPSCs to share the same main-chains, thus enriching the molecular designing strategies and probably expanding the library of efficient HTMs for iPSCs.

Conjugated polyelectrolyte Defect-passivation Dopant-free hole-transporting material Hole-extraction Perovskite solar cell

SCI ; EI

英语

第一 ; 通讯

Shenzhen Science and Technology Innovation Committee["KQTD2015033110182370","JCYJ20180302174321291"] ; Guangdong Basic and Applied Basic Research Foundation[2019B1515120083] ; Shenzhen Engineering Research and Development Center for Flexible Solar Cells Project funding from Shenzhen Development and Reform Committee[2019-126]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000664247600003

ELSEVIER SCIENCE SA

20211610219736

Conjugated polymers ; Defects ; Extraction ; Hole mobility ; Passivation ; Perovskite ; Polyelectrolytes ; Polymer solar cells ; Thiophene

Minerals:482.2 ; Protection Methods:539.2.1 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Chemical Operations:802.3 ; Organic Compounds:804.1 ; Organic Polymers:815.1.1 ; Polymer Products:817.1 ; Materials Science:951

ENGINEERING

2-s2.0-85104049337

Scopus

1.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Shenzhen Engineering Research and Development Center for Flexible Solar Cells,Southern University of Science and Technology,Shenzhen,518055,China
4.Department of Mechanical Engineering,Massachusetts Institute of Technology,Cambridge,02139,United States
5.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing,102206,China

Zhang，Luozheng,Zhou，Xianyong,Xie，Jiaming,et al. Learning from hole-transporting polymers in regular perovskite solar cells to construct efficient conjugated polyelectrolytes for inverted devices[J]. CHEMICAL ENGINEERING JOURNAL,2021,420.

Zhang，Luozheng.,Zhou，Xianyong.,Xie，Jiaming.,Hu，Bihua.,Liu，Peiying.,...&Xu，Baomin.(2021).Learning from hole-transporting polymers in regular perovskite solar cells to construct efficient conjugated polyelectrolytes for inverted devices.CHEMICAL ENGINEERING JOURNAL,420.

Zhang，Luozheng,et al."Learning from hole-transporting polymers in regular perovskite solar cells to construct efficient conjugated polyelectrolytes for inverted devices".CHEMICAL ENGINEERING JOURNAL 420(2021).