Whether organic spacer cations induced 2D/3D or quasi-2D/3D mixed dimensional perovskites?

Li，Yaru1,2,3; Wu，Jiawen1,2,3; Zhang，Yong2,3; Zhang，Luozheng2,3; Zhou，Xianyong2,3; Hu，Bihua2,3; Jiang，Zhengyan2,3; Zeng，Jie2,3; Wang，Danyang2; Liu，Yanliang2,3; Chen，Shi2,3; Liu，Zhixin4; Liu，Chang1,2,3; Wang，Xingzhu1,2,3,4; Xu，Baomin2,3

2022-12-15

10.1016/j.cej.2022.137887

CHEMICAL ENGINEERING JOURNAL   Impact Factor & Quartile

1385-8947

1873-3212

The dimensional engineering of perovskite films has been demonstrated to be an efficient technique to enhance both the efficiency and stability of perovskite solar cells (PSCs). Whether the alternative spacer cations induced 2D/3D or quasi-2D/3D mixed dimensional perovskites make a great difference in the photovoltaic performance and their stability of corresponding PSCs. But the research on this aspect is still insufficient, the crystal structure of the mixed dimensional perovskite is still unclear, which needs more in-depth research. This work adopted the alternative spacer cation of 4-(aminoethyl) pyridine (4-AEP) and the conventional phenylethylamine (PEA), to study their induced low-dimensional crystal phase in 3D perovskite and compare the effect on the performance of corresponding PSCs. We demonstrated that 4-AEP cation has induced 2D crystal phase (low n-value) at the 3D grain boundaries, while the PEA has induced quasi-2D (high n-value) one. As a result, the 4-AEP incorporated MAPbI3 (2D/3D) PSCs obtained a higher power conversion efficiency (PCE, 20.7%) than that of the PEA based quasi-2D/3D ones. More importantly, the 4-AEP based 2D/3D PSCs exhibited better moisture resistance and long-term stability when exposed to moisture and continuous light irradiation. Our work demonstrated that the alternative organic spacer cation could induce 2D or quasi-2D phase in 3D perovskite, but the 2D/3D mixed dimensional perovskite shows more favorable for obtaining highly efficient and stable perovskite solar cells.

Perovskitesolarcells Dimensionalengineering Alternativespacercation Crystalconfiguration Efficiencystability

SCI ; EI

English

First ; Corresponding

National Key Research and Develop- ment Project["2021YFB3800100","2021YFB3800101"] ; Ministry of Science and Technology of China[2021M691410] ; China Postdoctoral Science Foundation["62104094","U19A2089","61904076","62174078","62004091","62004089"] ; National Natural Science Foundation of China["2019B1515120083","2021A1515110628"] ; Guangdong Basic and Applied Basic Research Foundation["JCYJ20200109141014474","JCYJ20190809150811 504"] ; Shenzhen Science and Technology Innovation Committee[2019B12 1205001] ; Guangdong -Hong Kong -Macao Joint Laboratory[2020A1515010980]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000830813100003

ELSEVIER SCIENCE SA

20222912386179

Cell engineering ; Crystal structure ; Grain boundaries ; Moisture ; Perovskite ; Perovskite solar cells ; Positive ions ; Stability

Biomedical Engineering:461.1 ; Minerals:482.2 ; Solar Cells:702.3 ; Production Engineering:913.1 ; Crystal Lattice:933.1.1

ENGINEERING

2-s2.0-85134335830

Web of Science

1.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.Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China
4.Shenzhen Putai Technology Co.,Ltd,Shenzhen,518110,China

Li，Yaru,Wu，Jiawen,Zhang，Yong,et al. Whether organic spacer cations induced 2D/3D or quasi-2D/3D mixed dimensional perovskites?[J]. CHEMICAL ENGINEERING JOURNAL,2022,450.

Li，Yaru.,Wu，Jiawen.,Zhang，Yong.,Zhang，Luozheng.,Zhou，Xianyong.,...&Xu，Baomin.(2022).Whether organic spacer cations induced 2D/3D or quasi-2D/3D mixed dimensional perovskites?.CHEMICAL ENGINEERING JOURNAL,450.

Li，Yaru,et al."Whether organic spacer cations induced 2D/3D or quasi-2D/3D mixed dimensional perovskites?".CHEMICAL ENGINEERING JOURNAL 450(2022).