Propylammonium Chloride Additive for Efficient and Stable FAPbI(3) Perovskite Solar Cells

Zhang, Yong1,2,3,4; Li, Yan1,2,5; Zhang, Lin6; Hu, Hanlin7; Tang, Zikang5; Xu, Baomin1,2; Park, Nam-Gyu3,4

2021-10-01

10.1002/aenm.202102538

Advanced Energy Materials   影响因子和分区

1614-6832

1614-6840

To achieve high efficiency perovskite solar cells (PSCs) based on alpha-phase formamidinium lead iodide (FAPbI(3)), addition of methylammonium chloride (MACl) in the precursor solution is commonly used, mainly because of phase stability and improvement of grain size and crystallinity. However, the instability of MA in the perovskite limits the device long-term stability. In this report, n-propylammonium chloride (PACl) is proposed as an alternative to MACl for more stable and efficient FAPbI(3)-based PSCs. Perovskite grain size is increased after addition of PACl. Unlike the MA cation, the propylammonium cation passivates the grain boundary rather than being incorporated into the perovskite lattice due to larger ionic size, which minimizes the change in bandgap. Carrier lifetime is significantly increased by more than five times from 405 to 2110 ns with the PACl additive with negligible trap-mediated recombination, while only four times longer carrier lifetime is observed by MACl additive. As a result, a power conversion efficiency over 22.2% is achieved by 20 mol% PACl additive, which is one of the best efficiencies among the MA-free and Br-free PSCs. In addition, stability against moisture is much better for PACl than for MACl due to an in situ formed barrier at the bulk perovskite.

additive high efficiency perovskite solar cells propylammonium chloride stability

SCI ; EI

英语

第一 ; 通讯

National Research Foundation of Korea (NRF) - Ministry of Science and Information and Communication Technology (MSIT) of Korea["NRF-2021R1A3B1076723","NRF-2016M3D1A1027663","NRF-2016M3D1A1027664"] ; National Key Research and Development Project funding from the Ministry of Science and Technology of China["2016YFA0202400","2016YFA0202404"] ; Basic and Applied Basic Research Foundation of Guangdong Province[2019B1515120083] ; Peacock Team Project funding from Shenzhen Science and Technology Innovation Committee[KQTD2015033110182370] ; Shenzhen Development and Reform Committee[2019-126]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000711636600001

WILEY-V C H VERLAG GMBH

20214411085091

Additives ; Carrier lifetime ; Chlorine compounds ; Crystallinity ; Efficiency ; Grain boundaries ; Grain size and shape ; Iodine compounds ; Layered semiconductors ; Lead compounds ; Perovskite ; Positive ions ; Stability

Minerals:482.2 ; Electricity: Basic Concepts and Phenomena:701.1 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Production Engineering:913.1 ; Crystalline Solids:933.1

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Engn Res & Dev Ctr Flexible Solar Cells, Shenzhen 518055, Peoples R China
3.Sungkyunkwan Univ, Sch Chem Engn, Suwon 16419, South Korea
4.Sungkyunkwan Univ, Ctr Antibonding Regulated Crystals, Suwon 16419, South Korea
5.Univ Macau, Inst Appl Phys & Mat Engn, Macau 999078, Peoples R China
6.Cent South Univ, Sch Phys & Elect, Hunan Key Lab Super Microstruct & Ultrafast Proc, Changsha 410083, Peoples R China
7.Shenzhen Polytech, Hoffman Inst Adv Mat, 7098 Liuxian Blvd, Shenzhen 518055, Peoples R China

Zhang, Yong,Li, Yan,Zhang, Lin,et al. Propylammonium Chloride Additive for Efficient and Stable FAPbI(3) Perovskite Solar Cells[J]. Advanced Energy Materials,2021,11.

Zhang, Yong.,Li, Yan.,Zhang, Lin.,Hu, Hanlin.,Tang, Zikang.,...&Park, Nam-Gyu.(2021).Propylammonium Chloride Additive for Efficient and Stable FAPbI(3) Perovskite Solar Cells.Advanced Energy Materials,11.

Zhang, Yong,et al."Propylammonium Chloride Additive for Efficient and Stable FAPbI(3) Perovskite Solar Cells".Advanced Energy Materials 11(2021).