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Multidentate Molecular Anchoring for Enhanced Interfacial Stability and Reliable Perovskite Solar Cells.

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Title: Multidentate Molecular Anchoring for Enhanced Interfacial Stability and Reliable Perovskite Solar Cells.
Authors: Wei, Kun1,2 (AUTHOR), Wang, Wanhai1 (AUTHOR), Zhang, Cuiping1,2,3 (AUTHOR), Hu, Jianfei1 (AUTHOR), Sun, Guowen4 (AUTHOR), Liu, Dachang3 (AUTHOR), Pang, Shuping3 (AUTHOR), Yang, Li1,2,5 (AUTHOR) li.yang@xmu.edu.cn, Tang, Weihua1,2 (AUTHOR) whtang@xmu.edu.cn, Zhang, Jinbao1,2 (AUTHOR) jinbao.zhang@xmu.edu.cn
Source: Advanced Energy Materials. 5/13/2026, Vol. 16 Issue 18, p1-12. 12p.
Subject Terms: *Phosphonic acids, *Interface stability, *Thermal stability, *Charge transfer, *Solar cell efficiency, *Solar cells, *Crystal defects
Abstract: High‐performance inverted perovskite solar cells (PSCs) rely critically on high‐quality interfaces and efficient bulk defect passivation. However, achieving simultaneous optimization of charge extraction and lattice stabilization through functional molecular modifiers remains a persistent challenge in the field. Herein, we demonstrate a multidentate molecular anchoring strategy leveraging tripodal phosphonic acid molecules to regulate the co‐deposition dynamics of the perovskite absorber and hole transport layer. The trifurcated phosphonic acid moieties enable robust multidentate chemisorption onto the glass substrate, yielding an interface with face‐on π‐stacking orientation that facilitates optimal band alignment and suppresses interfacial charge recombination. Concurrently, these molecules segregate preferentially to perovskite grain boundaries, where they engage in coordinative passivation of undercoordinated Pb2+ defects. This dual‐functional design constructs a coherent charge‐transport network that synergistically enhances interfacial hole extraction while mitigating ion migration and bulk defect formation. The resulting PSCs deliver a certified power conversion efficiency of 26.35%, accompanied by exceptional operational stability: retaining 82% of their initial performance after 1000 h of thermal stability test (85°C) and 86% after 1000 h of maximum power point tracking. This work establishes critical insights into molecular‐mediated interface stabilization, providing a generalized framework for the rational design of functional molecules for optoelectronic devices. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194052587
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Multidentate Molecular Anchoring for Enhanced Interfacial Stability and Reliable Perovskite Solar Cells.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wei%2C+Kun%22">Wei, Kun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Wanhai%22">Wang, Wanhai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Cuiping%22">Zhang, Cuiping</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Jianfei%22">Hu, Jianfei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Guowen%22">Sun, Guowen</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Dachang%22">Liu, Dachang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pang%2C+Shuping%22">Pang, Shuping</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Li%22">Yang, Li</searchLink><relatesTo>1,2,5</relatesTo> (AUTHOR)<i> li.yang@xmu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Tang%2C+Weihua%22">Tang, Weihua</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> whtang@xmu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jinbao%22">Zhang, Jinbao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> jinbao.zhang@xmu.edu.cn</i>
– Name: TitleSource
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  Data: <searchLink fieldCode="JN" term="%22Advanced+Energy+Materials%22">Advanced Energy Materials</searchLink>. 5/13/2026, Vol. 16 Issue 18, p1-12. 12p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Phosphonic+acids%22">Phosphonic acids</searchLink><br />*<searchLink fieldCode="DE" term="%22Interface+stability%22">Interface stability</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br />*<searchLink fieldCode="DE" term="%22Charge+transfer%22">Charge transfer</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="%22Crystal+defects%22">Crystal defects</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: High‐performance inverted perovskite solar cells (PSCs) rely critically on high‐quality interfaces and efficient bulk defect passivation. However, achieving simultaneous optimization of charge extraction and lattice stabilization through functional molecular modifiers remains a persistent challenge in the field. Herein, we demonstrate a multidentate molecular anchoring strategy leveraging tripodal phosphonic acid molecules to regulate the co‐deposition dynamics of the perovskite absorber and hole transport layer. The trifurcated phosphonic acid moieties enable robust multidentate chemisorption onto the glass substrate, yielding an interface with face‐on π‐stacking orientation that facilitates optimal band alignment and suppresses interfacial charge recombination. Concurrently, these molecules segregate preferentially to perovskite grain boundaries, where they engage in coordinative passivation of undercoordinated Pb2+ defects. This dual‐functional design constructs a coherent charge‐transport network that synergistically enhances interfacial hole extraction while mitigating ion migration and bulk defect formation. The resulting PSCs deliver a certified power conversion efficiency of 26.35%, accompanied by exceptional operational stability: retaining 82% of their initial performance after 1000 h of thermal stability test (85°C) and 86% after 1000 h of maximum power point tracking. This work establishes critical insights into molecular‐mediated interface stabilization, providing a generalized framework for the rational design of functional molecules for optoelectronic devices. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=194052587
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/aenm.70806
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 1
    Subjects:
      – SubjectFull: Phosphonic acids
        Type: general
      – SubjectFull: Interface stability
        Type: general
      – SubjectFull: Thermal stability
        Type: general
      – SubjectFull: Charge transfer
        Type: general
      – SubjectFull: Solar cell efficiency
        Type: general
      – SubjectFull: Solar cells
        Type: general
      – SubjectFull: Crystal defects
        Type: general
    Titles:
      – TitleFull: Multidentate Molecular Anchoring for Enhanced Interfacial Stability and Reliable Perovskite Solar Cells.
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            NameFull: Wei, Kun
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            NameFull: Wang, Wanhai
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            NameFull: Zhang, Cuiping
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            NameFull: Hu, Jianfei
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            NameFull: Sun, Guowen
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            NameFull: Liu, Dachang
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            NameFull: Yang, Li
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            NameFull: Zhang, Jinbao
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            – D: 13
              M: 05
              Text: 5/13/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 16146832
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              Value: 16
            – Type: issue
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            – TitleFull: Advanced Energy Materials
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