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A Bisphosphonic Acid-functionalized Carbazole for Dual Hydrophilic Interfaces Toward Efficient and Stable Organic Solar Cells.

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Title: A Bisphosphonic Acid-functionalized Carbazole for Dual Hydrophilic Interfaces Toward Efficient and Stable Organic Solar Cells.
Authors: Liu, Chun-Hui1 (AUTHOR), Lian, Yu-Chen1 (AUTHOR), Song, Jia-Li1,2 (AUTHOR), Duan, Xiao-Peng1,2 (AUTHOR), Wang, Zhen2 (AUTHOR) zhenwang@buaa.edu.cn, Sun, Yan-Ming1,2 (AUTHOR) sunym@buaa.edu.cn
Source: Chinese Journal of Polymer Science (Springer Science & Business Media B.V.). Apr2026, Vol. 44 Issue 4, p950-958. 9p.
Subjects: Carbazole, Phosphonic acids, Solar cell efficiency, Solar cells, Polymers, Thermal stability, Hydrophilic surfaces
Abstract: Carbazole derivatives with a single phosphonic acid (PA) group are widely used as monolayer interfaces in perovskites and organic solar cells (OSCs). However, their hydrophilic nature renders ITO electrodes hydrophobic, limiting further applications. In this study, a novel carbazole-based compound functionalized with two PA groups, denoted 2PACz-D1, was designed to create a dual hydrophilic interface. This configuration enables the formation of a bilayer hole-transporting layer (HTL). Specifically, one PA group anchors to the ITO electrode, while the other generates a secondary hydrophilic surface. This allows the subsequent deposition of hydrophilic PEDOT:PSS, forming a protective bilayer HTL that shields ITO from corrosive acidic polymers. The OSCs incorporating this bilayer HTL achieved a power conversion efficiency of 19.44% and exhibited improved thermal stability compared to devices with a single HTL. This work demonstrates the potential of bis-PA carbazole derivatives for tailoring the HTL surface properties, offering promising opportunities for various organic electronic devices. [ABSTRACT FROM AUTHOR]
Copyright of Chinese Journal of Polymer Science (Springer Science & Business Media B.V.) is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 193063588
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: A Bisphosphonic Acid-functionalized Carbazole for Dual Hydrophilic Interfaces Toward Efficient and Stable Organic Solar Cells.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Chun-Hui%22">Liu, Chun-Hui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lian%2C+Yu-Chen%22">Lian, Yu-Chen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Jia-Li%22">Song, Jia-Li</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Duan%2C+Xiao-Peng%22">Duan, Xiao-Peng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Zhen%22">Wang, Zhen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> zhenwang@buaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Sun%2C+Yan-Ming%22">Sun, Yan-Ming</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> sunym@buaa.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Chinese+Journal+of+Polymer+Science+%28Springer+Science+%26+Business+Media+B%2EV%2E%29%22">Chinese Journal of Polymer Science (Springer Science & Business Media B.V.)</searchLink>. Apr2026, Vol. 44 Issue 4, p950-958. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Carbazole%22">Carbazole</searchLink><br /><searchLink fieldCode="DE" term="%22Phosphonic+acids%22">Phosphonic acids</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+cell+efficiency%22">Solar cell efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+cells%22">Solar cells</searchLink><br /><searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrophilic+surfaces%22">Hydrophilic surfaces</searchLink>
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  Data: Carbazole derivatives with a single phosphonic acid (PA) group are widely used as monolayer interfaces in perovskites and organic solar cells (OSCs). However, their hydrophilic nature renders ITO electrodes hydrophobic, limiting further applications. In this study, a novel carbazole-based compound functionalized with two PA groups, denoted 2PACz-D1, was designed to create a dual hydrophilic interface. This configuration enables the formation of a bilayer hole-transporting layer (HTL). Specifically, one PA group anchors to the ITO electrode, while the other generates a secondary hydrophilic surface. This allows the subsequent deposition of hydrophilic PEDOT:PSS, forming a protective bilayer HTL that shields ITO from corrosive acidic polymers. The OSCs incorporating this bilayer HTL achieved a power conversion efficiency of 19.44% and exhibited improved thermal stability compared to devices with a single HTL. This work demonstrates the potential of bis-PA carbazole derivatives for tailoring the HTL surface properties, offering promising opportunities for various organic electronic devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chinese Journal of Polymer Science (Springer Science & Business Media B.V.) is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1007/s10118-025-3512-6
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 950
    Subjects:
      – SubjectFull: Carbazole
        Type: general
      – SubjectFull: Phosphonic acids
        Type: general
      – SubjectFull: Solar cell efficiency
        Type: general
      – SubjectFull: Solar cells
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      – SubjectFull: Polymers
        Type: general
      – SubjectFull: Thermal stability
        Type: general
      – SubjectFull: Hydrophilic surfaces
        Type: general
    Titles:
      – TitleFull: A Bisphosphonic Acid-functionalized Carbazole for Dual Hydrophilic Interfaces Toward Efficient and Stable Organic Solar Cells.
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            NameFull: Liu, Chun-Hui
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            NameFull: Lian, Yu-Chen
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            NameFull: Song, Jia-Li
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            NameFull: Duan, Xiao-Peng
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            NameFull: Wang, Zhen
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              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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              Value: 44
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