Green-antisolvent-induced homogeneous phase distribution for efficient and stable MA-free 2D perovskite solar cells
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.
Fundamental Research Funds for the Central Universities[000-0903069032] ; National Natural Science Foundation of China["52203237","22103034"]
|WOS Research Area|
Engineering, Environmental ; Engineering, Chemical
|WOS Accession No|
|ESI Research Field|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Department of Mechanical and Energy Engineering|
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).
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