globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.05.031
论文题名:
Identifying the functional groups effect on passivating perovskite solar cells
作者: Xie J.; Yan K.; Zhu H.; Li G.; Wang H.; Zhu H.; Hang P.; Zhao S.; Guo W.; Ye D.; Shao L.; Guan X.; Ngai T.; Yu X.; Xu J.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:20
起始页码: 1726
结束页码: 1734
语种: 英语
中文关键词: Chemical bonding ; Functional groups ; Hydrogen bonding ; Perovskite solar cell ; Surface passivation
英文关键词: Bond strength (chemical) ; Efficiency ; Hydrogen bonds ; Molecules ; Open circuit voltage ; Passivation ; Perovskite ; Crystalline interlayer ; High melting point ; Intermolecular hydrogen bonding ; Organic molecules ; Passivation effect ; Power conversion efficiencies ; Surface passivation ; Tert-butylbenzene ; Perovskite solar cells
英文摘要: Many organic molecules with various functional groups have been used to passivate the perovskite surface for improving the efficiency and stability of perovskite solar cell (PSCs). However, the intrinsic attributes of the passivation effect based on different chemical bonds are rarely studied. Here, we comparatively investigate the passivation effect among 12 types of functional groups on para-tert-butylbenzene for PSCs and find that the open circuit voltage (VOC) tends to increase with the chemical bonding strength between perovskite and these passivation additive molecules. Particularly, the para-tert-butylbenzoic acid (tB-COOH), with the extra intermolecular hydrogen bonding, can stabilize the surface passivation of perovskite films exceptionally well through formation of a crystalline interlayer with water-insoluble property and high melting point. As a result, the tB-COOH device achieves a champion power conversion efficiency (PCE) of 21.46%. More importantly, such devices, which were stored in ambient air with a relative humidity of ≃45%, can retain 88% of their initial performance after a testing period of more than 1 year (10,080 h). This work provides a case study to understand chemical bonding effects on passivation of perovskite. © 2020 Science China Press
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被引频次[WOS]:53   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170099
Appears in Collections:气候变化与战略

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作者单位: School of Environment and Energy, State Key Laboratory of Luminescent Materials and Devices, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, 510006, China; Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong, 999077, Hong Kong; College of Material Science and Technology, China University of Petroleum, Qingdao, 266580, China; College of Science and Information, Qingdao Agricultural University, Qingdao, 266109, China; Department of Physics, The Chinese University of Hong Kong, Hong Kong, 999077, Hong Kong; State Key Laboratory of Silicon Materials and School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China; Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, 999077, Hong Kong; School of Materials, Sun Yat-sen University, Guangzhou, 510275, China

Recommended Citation:
Xie J.,Yan K.,Zhu H.,et al. Identifying the functional groups effect on passivating perovskite solar cells[J]. Science Bulletin,2020-01-01,65(20)
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