Understanding the Interplay of Binary Organic Spacer in Ruddlesden–Popper Perovskites toward Efficient and Stable Solar Cells

Chen，Shi1,2,3; Shen，Nan2; Zhang，Lihua2; Zhang，Luozheng1,2,3,4; Cheung，Sin Hang5; Chen，Shuming6; So，Shu Kong5; Xu，Baomin2

2020

10.1002/adfm.201907759

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

Ruddlesden–Popper perovskite (RPP) materials have attracted great attention due to their superior stability, where the organic spacer dominantly determines the stability and efficiency of RPP solar cells, but research still lacks the systematical understanding of the interplay of binary spacer in the overall mixture range of 0–100% in RPPs on the precursor chemistry, film quality, and carrier behavior. Herein, a series of novel binary spacer RPP films of (PBA BA)MAPbI (BA = n-butylammonium, PBA = 4-phenylbutan-1-aminium, and MA = methylammonium) is successfully fabricated to reveal the interplay of binary spacers. The incorporation of 50% BA into the (PBA)MAPbI precursor solution increases the colloidal size and reduces nucleation sites, and therefore forms a very smooth film with much larger crystal grains and a higher degree of crystal preferential orientation, resulting in a significant reduction of trap states. The resulting combination of fast electron transfer and efficient electron extraction facilitates to effectively suppress the trap-assisted charge recombination and remarkably decrease charge recombination losses. Consequently, the (PBABA)MAPbI device achieves a champion efficiency of 16.0%, among the highest reported efficiencies for RPP devices. Furthermore, this device demonstrates good ambient, illumination, and thermal stabilities, retaining 60–93% of its initial efficiency after 30 days of various ageing.

binary spacers interplay Ruddlesden–Popper perovskites solar cells

SCI ; EI

英语

NI论文

第一 ; 通讯

[2016YFA0202400] ; [KQTD2015033110182370] ; Development and Reform Commission of Shenzhen Municipality[2019-126]

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

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

WOS:000508750300001

Wiley-VCH Verlag

20200508111911

Crystal orientation ; Efficiency ; Perovskite ; Solar cells ; Sols

Minerals:482.2 ; Solar Cells:702.3 ; Chemical Products Generally:804 ; Production Engineering:913.1 ; Crystal Lattice:933.1.1

MATERIALS SCIENCE

2-s2.0-85078674059

Scopus

1.SUSTech 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 Chemistry,The Hong Kong University of Science and Technology,Kowloon,Clear Water Bay,Hong Kong
5.Department of Physics,Hong Kong Baptist University,Kowloon Tong,Hong Kong
6.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Chen，Shi,Shen，Nan,Zhang，Lihua,等. Understanding the Interplay of Binary Organic Spacer in Ruddlesden–Popper Perovskites toward Efficient and Stable Solar Cells[J]. ADVANCED FUNCTIONAL MATERIALS,2020,30(10).

Chen，Shi.,Shen，Nan.,Zhang，Lihua.,Zhang，Luozheng.,Cheung，Sin Hang.,...&Xu，Baomin.(2020).Understanding the Interplay of Binary Organic Spacer in Ruddlesden–Popper Perovskites toward Efficient and Stable Solar Cells.ADVANCED FUNCTIONAL MATERIALS,30(10).

Chen，Shi,et al."Understanding the Interplay of Binary Organic Spacer in Ruddlesden–Popper Perovskites toward Efficient and Stable Solar Cells".ADVANCED FUNCTIONAL MATERIALS 30.10(2020).