Dual-Site Molecular Dipole Enables Tunable Interfacial Field Toward Efficient and Stable Perovskite Solar Cells

Shi, Junwei1,2; Samad, Muhammad Waqas1; Li, Fangchao1; Guo, Chenxi1; Liu, Cheng1; Guo, Junjun1; Zhang, Yong2; Zeng, Jie2; Wang, Deng2; Ma, Wanli1,3; Xu, Baomin2; Yuan, Jianyu1,4

2024-09-01

10.1002/adma.202410464

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

["The interfacial management in perovskite solar cells (PSCs), including mitigating the carrier transport barrier and suppressing non-radiative recombination, still remains a significant challenge for efficiency and stability enhancement. Herein, by screening a family of fluorine (F) terminated dual-site organic dipole molecules, the study aims to gain insight into the molecular dipole array toward tunable interfacial field. Both experimental and theoretical results reveal that these functional interfacial dipole molecules can effectively anchor on perovskite surface through Lewis acid-base interaction. In addition, the tailored side-chain with terminated F atoms allows for altering and constructing a well matched perovskite/Spiro-OMeTAD interfacial contact. As a result, the inserting dual-site organic dipole array effectively modulates the interface to deliver a gradient energy level alignment, facilitating carrier extraction and transport. The optimal dual-site dipole trifluoro-methanesulfonamide mediated N-i-P PSCs achieve the highest efficiency of 25.47%, together with enhanced operational stability under 1000 h of the simulated 1-sun illumination exposure. These findings are believed to provide insight into the design of dual-site molecular dipole with sufficient interfacial tunability for perovskite-based optoelectronic devices.","A family of fluorine terminated dual-site organic dipole molecules is investigated to engineer interfacial properties. Through the tunable interfacial field via tailored side-chain, a gradient energy level alignment with more favorable energetics is established, and the resulting N-i-P perovskite solar cell demonstrates a record high efficiency value of 25.47% together with enhanced long-term operational stability. image"]

band alignment carrier transport interfacial dipole perovskite solar cell stability

SCI

英语

通讯

National Key Research and Development Program of China[2022YFE0110300] ; National Natural Science Foundation of China["52261145696","62104166"] ; Natural Science Foundation of Jiangsu Province[BK20211598] ; Science and Technology Program of Suzhou[ST202219]

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

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

WOS:001306109300001

WILEY-V C H VERLAG GMBH

Web of Science

1.Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, 199 Ren Ai Rd,Suzhou Ind Pk, Suzhou 215123, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, 199 Ren Ai Rd,Suzhou Ind Pk, Suzhou 215123, Peoples R China
4.Soochow Univ, Jiangsu Key Lab Adv Negat Carbon Technol, 199 Ren Ai Rd,Suzhou Ind Pk, Suzhou 215123, Peoples R China

Shi, Junwei,Samad, Muhammad Waqas,Li, Fangchao,et al. Dual-Site Molecular Dipole Enables Tunable Interfacial Field Toward Efficient and Stable Perovskite Solar Cells[J]. ADVANCED MATERIALS,2024.

Shi, Junwei.,Samad, Muhammad Waqas.,Li, Fangchao.,Guo, Chenxi.,Liu, Cheng.,...&Yuan, Jianyu.(2024).Dual-Site Molecular Dipole Enables Tunable Interfacial Field Toward Efficient and Stable Perovskite Solar Cells.ADVANCED MATERIALS.

Shi, Junwei,et al."Dual-Site Molecular Dipole Enables Tunable Interfacial Field Toward Efficient and Stable Perovskite Solar Cells".ADVANCED MATERIALS (2024).