Bidirectional Targeted Therapy Enables Efficient, Stable, and Eco-Friendly Perovskite Solar Cells

Qi, Xingnan1,2; Song, Chongping1; Zhang, Weihai2; Shi, Yueqing3; Gao, Yueyue1; Liu, Heng2; Chen, Rui3; Shang, Luwen1; Tan, Hairen4; Tan, Furui1; Wang, Hsing-Lin2

2023-02-01

10.1002/adfm.202214714

ADVANCED FUNCTIONAL MATERIALS   Impact Factor & Quartile

1616-301X

1616-3028

Perovskite solar cells (PSCs) have witnessed rapid development toward commercialization based on their superior efficiency except for some remained misgivings about their poor stability primarily originating from interfacial problems. Robust back interface for neutralization of crystal defects, depression of dopant lithium ions (Li+) diffusion, and even inhibition of toxic lead (Pb) leakage is highly desirable; however, it remains a great challenge. Herein, a cost-effective interfacial therapy approach is developed to simultaneously alleviate the obstacles aforementioned. A small molecule, 1,4-dithiane with unique chair structure, is adapted to interact with under-coordinated Pb2+ on perovskite surface and Li+ from hole transport layer, neutralizing interfacial defects and suppressing Li+ diffusion. Besides, the presence of 1,4-dithiane can efficiently modulate interfacial energetics, enhance hydrophobicity of PSCs, and anchor Pb atoms via S-Pb bond. Consequently, the target devices perform better than control devices when exposed to light-soaking, moisture, and thermal stress owing to the synergistic suppression of trap-state density, ions migration, and moisture permeation. The optimized target device delivers a champion efficiency of 23.27% with mitigated Pb leakage. This study demonstrates a promising functionalized modification strategy for constructing efficient, stable, and eco-friendly PSCs.

bidirectional targeted therapies defects ions diffusion perovskite solar cells stability

SCI

English

NI Journal Papers

Corresponding

National Natural Science Foundation of China[62204079] ; China Postdoctoral Science Foundation[2022M711037] ; Leading Talents of Guangdong Province program[2016LJ06N507] ; Shenzhen Basic Research Fund[JCYJ20190809144215761] ; Postgraduate Cultivating Innovation and Quality Improvement Action Plan of Henan University["SYLYC2022184","SYLYC2022185"]

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

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

WOS:000934865500001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Henan Univ, Key Lab Photovolta Mat, Kaifeng 475004, Peoples R China
2.Southern Univ Sci & Technol, Key Univ Lab Highly Efficient Utilizat Solar Energ, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
4.Nanjing Univ, Coll Engn & Appl Sci, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct,Jiangsu Key Lab A, Nanjing 210093, Peoples R China

Qi, Xingnan,Song, Chongping,Zhang, Weihai,et al. Bidirectional Targeted Therapy Enables Efficient, Stable, and Eco-Friendly Perovskite Solar Cells[J]. ADVANCED FUNCTIONAL MATERIALS,2023.

Qi, Xingnan.,Song, Chongping.,Zhang, Weihai.,Shi, Yueqing.,Gao, Yueyue.,...&Wang, Hsing-Lin.(2023).Bidirectional Targeted Therapy Enables Efficient, Stable, and Eco-Friendly Perovskite Solar Cells.ADVANCED FUNCTIONAL MATERIALS.

Qi, Xingnan,et al."Bidirectional Targeted Therapy Enables Efficient, Stable, and Eco-Friendly Perovskite Solar Cells".ADVANCED FUNCTIONAL MATERIALS (2023).