Green-antisolvent-induced homogeneous phase distribution for efficient and stable MA-free 2D perovskite solar cells

Xiang，Junyan1,2; Li，Xianggao1,2; Gong，Shaokuan3; Wang，Shirong1,2; Chen，Xihan3; Zhang，Fei1,2

2023-03-15

10.1016/j.cej.2023.141758

CHEMICAL ENGINEERING JOURNAL   Impact Factor & Quartile

1385-8947

1873-3212

The phase distribution of two-dimensional (2D) perovskites is critical for solar cell power conversion efficiency (PCE). Here, we report a simple green anti-solvent (ethyl acetate, EA) method for obtaining uniform phase dispersion of methylamine (MA)-free quasi-2D Dion-Jacobson (DJ) phase perovskite films (DMePDA)FAPbI (n = 4). The films present a more homogeneous phase distribution for their rapid extraction of solvents and the interaction between Pb and the carbonyl group in EA, resulting in a more shining surface, reduced surface-defect density, higher out-plane mobility, and higher conductivity. We obtain a PCE of 18.86 %, which is the highest for MA-free DJ phase 2D perovskite-based devices. In addition, the target devices maintain 85 % and 90 % of their initial values after 1008 h under 85 % relative humidity at 85 ℃ (ISOS-D-3) and continuous illumination at maximum power point (MPP) tracking at ∼ 45 ℃ (ISOS-L-1), respectively.

Phase distribution Solar cells Stability Two-dimensional perovskites

SCI

English

Others

Fundamental Research Funds for the Central Universities[000-0903069032] ; National Natural Science Foundation of China["52203237","22103034"]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000944279100001

ELSEVIER SCIENCE SA

ENGINEERING

2-s2.0-85147870708

Scopus

1.School of Chemical Engineering and Technology,Tianjin University,Tianjin,300072,China
2.Collaborative Innovation Center of Chemical Science and Engineering (Tianjin),Tianjin,300072,China
3.SUSTech Energy Institute for Carbon Neutrality,Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Xiang，Junyan,Li，Xianggao,Gong，Shaokuan,et al. Green-antisolvent-induced homogeneous phase distribution for efficient and stable MA-free 2D perovskite solar cells[J]. CHEMICAL ENGINEERING JOURNAL,2023,460.

Xiang，Junyan,Li，Xianggao,Gong，Shaokuan,Wang，Shirong,Chen，Xihan,&Zhang，Fei.(2023).Green-antisolvent-induced homogeneous phase distribution for efficient and stable MA-free 2D perovskite solar cells.CHEMICAL ENGINEERING JOURNAL,460.

Xiang，Junyan,et al."Green-antisolvent-induced homogeneous phase distribution for efficient and stable MA-free 2D perovskite solar cells".CHEMICAL ENGINEERING JOURNAL 460(2023).