1,8-Octanediamine Dihydroiodide-Mediated Grain Boundary and Interface Passivation in Two-Step-Processed Perovskite Solar Cells

Liu, Heng1,2; Qi, Xingnan2; Wang, Jiantao2; Zhang, Weihai2; Xia, Yu2,4; Shi, Yueqing3; Chen, Rui3; Wang, Hsing-Lin2

2022

10.1002/solr.202100960

Solar RRL   影响因子和分区

2367-198X

Two-step-processed perovskite solar cells show superior reproducibility in terms of stepwise crystallization management. However, the device performance is limited due to the buried-interface defects that are highly dependent on the diffusion process of organic salts into Pbl(2). Herein, 1,8-octanediamine dihydroiodide (ODADI) is adopted to develop an alkylammonium predeposition strategy for the high-quality perovskite film. It is found that the pre-deposited ODADI layer not only facilitates the diffusion of organic salts via interaction with Pbl(2), but also passivates the buried-interface defects, resulting in a perovskite film with low defect density, high crystallinity, and superior electronic properties. Consequently, the fabricated devices deliver a significant enhancement on power conversion efficiency (PCE) from 19.87 to 22.07%. In addition, a superior long-term stability in glovebox atmosphere, maintaining 96% of the initial PCE after 1000 h, is demonstrated.

alkylammonium high performances passivations perovskite solar cells

SCI ; EI

英语

通讯

National Key Research and Development Program of China[2018YFB0704100] ; Key-Area Research and Development Program of GuangDong Province[2019B010941001] ; Leading talents of Guangdong Province Program[2016LJ06N507]

Energy & Fuels ; Materials Science

Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000744012800001

WILEY-V C H VERLAG GMBH

20220311481878

Crystallinity ; Electronic properties ; Grain boundaries ; Iodine compounds ; Layered semiconductors ; Lead compounds ; Passivation ; Perovskite ; Salts

Minerals:482.2 ; Protection Methods:539.2.1 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Crystalline Solids:933.1

Web of Science

1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China
4.Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

Liu, Heng,Qi, Xingnan,Wang, Jiantao,et al. 1,8-Octanediamine Dihydroiodide-Mediated Grain Boundary and Interface Passivation in Two-Step-Processed Perovskite Solar Cells[J]. Solar RRL,2022,6.

Liu, Heng.,Qi, Xingnan.,Wang, Jiantao.,Zhang, Weihai.,Xia, Yu.,...&Wang, Hsing-Lin.(2022).1,8-Octanediamine Dihydroiodide-Mediated Grain Boundary and Interface Passivation in Two-Step-Processed Perovskite Solar Cells.Solar RRL,6.

Liu, Heng,et al."1,8-Octanediamine Dihydroiodide-Mediated Grain Boundary and Interface Passivation in Two-Step-Processed Perovskite Solar Cells".Solar RRL 6(2022).