Tailoring Interfacial Dipole Molecules to Mitigate Carrier and Energy Losses in Perovskite Solar Cells

Wang, Deng1; Li, Yongchun2; Li, Wenjing3,4; Pan, Weichun3,4; Li, Ruoshui3,4; Wang, Shibo3,4; Liu, Fengli3,4; Lan, Zhang3,4; Wu, Jihuai3,4; Huang, Enmin2; Guo, Xugang2; Liu, Xuping1; Li, Qinghua1

2024-09-01

10.1002/adfm.202412068

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

["Interface engineering has become the mainstream for improving the performance of perovskite solar cells (PSCs). Interfacial dipole (ID) molecules have emerged as a feasible and effective strategy to alleviate the charge carrier loss and energy loss in PSCs. Here, the three symmetrical donor-acceptor interfacial dipole molecules (named PzT, PzTE, and PzTN) are designed and synthesized with identical hole transport backbone and different anchoring groups. The ID molecule is introduced into the interface between the perovskite layer and the hole transport layer. The dipole moments of ID molecules regulate the surface work function and energy-level alignment of perovskites, improve charge extraction, and reduce energy loss at the interface. Meanwhile, the anchoring groups of ID molecules coordinate with the defects on the surface of PVK and HTL, reduce interfacial trap state density and charge accumulation, and mitigate the carrier non-radiative recombination losses. As a result, PzTN-modified PSC achieved a champion power conversion efficiency of 25.34% with a photovoltage of 1.176 V and a fill factor (FF) of 83.27%, accompanied by almost undetectable hysteresis and excellent operating stability. This research demonstrates a feasible strategy for efficient and stable PSCs by interfacial dipole molecules.","The Three symmetrical donor-acceptor interfacial dipole molecules are designed and synthesized with identical hole transport backbone and different anchoring groups, which regulate the surface work function and energy-level alignment of perovskites, improve charge extraction, and reduce energy loss at the interface. PzTN-modified PSC achieved a champion power conversion efficiency of 25.34% with a photovoltage of 1.176 V and a fill factor (FF) of 83.27%, accompanied by almost undetectable hysteresis and excellent operating stability. image"]

defect passivation energy-level alignment interface engineering interfacial dipole molecule perovskite solar cells

SCI

英语

通讯

Guangdong Basic and Applied Basic Research Foundation["2021A1515110805","2022A1515110098","2023A1515010065","2024A1515011923","2024A1515010022"] ; Lingnan Normal University[2022] ; Talent Project of Lingnan Normal University["ZL22046","ZL22047"] ; Innovation Team of Guangdong Higher Education Institutes[2019KCXTD012] ; null[52372190] ; null[52372191] ; null[22271106] ; null[U20A20150]

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

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

WOS:001309347300001

WILEY-V C H VERLAG GMBH

Web of Science

1.Lingnan Normal Univ, Key Lab Environmentally Friendly Funct Mat & Devic, Guangdong Prov Key Lab Dev & Educ Special Needs Ch, Zhanjiang 524048, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Huaqiao Univ, Coll Mat Sci & Engn, Xiamen 361021, Fujian, Peoples R China
4.Minist Educ, Engn Res Ctr Environm Friendly Funct Mat, Xiamen 361021, Fujian, Peoples R China

Wang, Deng,Li, Yongchun,Li, Wenjing,et al. Tailoring Interfacial Dipole Molecules to Mitigate Carrier and Energy Losses in Perovskite Solar Cells[J]. ADVANCED FUNCTIONAL MATERIALS,2024.

Wang, Deng.,Li, Yongchun.,Li, Wenjing.,Pan, Weichun.,Li, Ruoshui.,...&Li, Qinghua.(2024).Tailoring Interfacial Dipole Molecules to Mitigate Carrier and Energy Losses in Perovskite Solar Cells.ADVANCED FUNCTIONAL MATERIALS.

Wang, Deng,et al."Tailoring Interfacial Dipole Molecules to Mitigate Carrier and Energy Losses in Perovskite Solar Cells".ADVANCED FUNCTIONAL MATERIALS (2024).