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A Dual‐Function Elastomer Enables Highly Efficient and Stretchable Layer‐by‐Layer Organic Solar Cells.

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Title: A Dual‐Function Elastomer Enables Highly Efficient and Stretchable Layer‐by‐Layer Organic Solar Cells.
Authors: Cheng, Yetai1 (AUTHOR), Yan, Xing1 (AUTHOR), Wang, Junjie2 (AUTHOR), Chen, Ya‐Nan1 (AUTHOR), Ran, Guangliu3 (AUTHOR), Li, Yonghuan4 (AUTHOR), Nie, Qing4 (AUTHOR), Gu, Chunyu4 (AUTHOR), Lu, Hao1,4 (AUTHOR) luhao@qdu.edu.cn, Bo, Zhishan1,5 (AUTHOR) zsbo@bnu.edu.cn, Liu, Yahui1 (AUTHOR) liuyh@qdu.edu.cn
Source: Advanced Energy Materials. 7/1/2026, Vol. 16 Issue 25, p1-10. 10p.
Subject Terms: *Polyurethane elastomers, *Solar cell efficiency, *Wearable technology, *Organic thin films, *Stability (Mechanics), *Flexible electronics
Abstract: The mechanical stability of organic solar cells (OSCs) remains insufficient for emerging applications such as flexible electronics, and conventional approaches for enhancing flexibility are still limited. This study proposes an innovative strategy that incorporates thermoplastic polyurethane (TPU) into the small‐molecule active layer via a layer‐by‐layer processing technique. On one hand, the nano‐confinement effect between TPU and L8‐BO enhances their interaction, leading to optimized molecular packing. This leads to outstanding power conversion efficiencies (PCEs) of 20.04% and 14.53% for rigid and stretchable devices with 1% TPU. Further, the D18/L8‐BO:BTP‐eC9 device achieves a notably higher efficiency of 20.37%. On the other hand, TPU effectively mitigates the brittleness of the small‐molecule material, thereby significantly improving the mechanical properties of the film. The crack‐onset strain of the active layer increased from 5.3% for the pristine film to 7.6% with 1% TPU, and further to 12.1% with 5% TPU. This work opens a new avenue for advancing the application of OSCs in wearable electronics. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
FullText Text:
  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 195038343
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: A Dual‐Function Elastomer Enables Highly Efficient and Stretchable Layer‐by‐Layer Organic Solar Cells.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Cheng%2C+Yetai%22">Cheng, Yetai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Xing%22">Yan, Xing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Junjie%22">Wang, Junjie</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Ya‐Nan%22">Chen, Ya‐Nan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ran%2C+Guangliu%22">Ran, Guangliu</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Yonghuan%22">Li, Yonghuan</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nie%2C+Qing%22">Nie, Qing</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gu%2C+Chunyu%22">Gu, Chunyu</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Hao%22">Lu, Hao</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> luhao@qdu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Bo%2C+Zhishan%22">Bo, Zhishan</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<i> zsbo@bnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Yahui%22">Liu, Yahui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liuyh@qdu.edu.cn</i>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Advanced+Energy+Materials%22">Advanced Energy Materials</searchLink>. 7/1/2026, Vol. 16 Issue 25, p1-10. 10p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Polyurethane+elastomers%22">Polyurethane elastomers</searchLink><br />*<searchLink fieldCode="DE" term="%22Solar+cell+efficiency%22">Solar cell efficiency</searchLink><br />*<searchLink fieldCode="DE" term="%22Wearable+technology%22">Wearable technology</searchLink><br />*<searchLink fieldCode="DE" term="%22Organic+thin+films%22">Organic thin films</searchLink><br />*<searchLink fieldCode="DE" term="%22Stability+%28Mechanics%29%22">Stability (Mechanics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Flexible+electronics%22">Flexible electronics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The mechanical stability of organic solar cells (OSCs) remains insufficient for emerging applications such as flexible electronics, and conventional approaches for enhancing flexibility are still limited. This study proposes an innovative strategy that incorporates thermoplastic polyurethane (TPU) into the small‐molecule active layer via a layer‐by‐layer processing technique. On one hand, the nano‐confinement effect between TPU and L8‐BO enhances their interaction, leading to optimized molecular packing. This leads to outstanding power conversion efficiencies (PCEs) of 20.04% and 14.53% for rigid and stretchable devices with 1% TPU. Further, the D18/L8‐BO:BTP‐eC9 device achieves a notably higher efficiency of 20.37%. On the other hand, TPU effectively mitigates the brittleness of the small‐molecule material, thereby significantly improving the mechanical properties of the film. The crack‐onset strain of the active layer increased from 5.3% for the pristine film to 7.6% with 1% TPU, and further to 12.1% with 5% TPU. This work opens a new avenue for advancing the application of OSCs in wearable electronics. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=195038343
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/aenm.71048
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Polyurethane elastomers
        Type: general
      – SubjectFull: Solar cell efficiency
        Type: general
      – SubjectFull: Wearable technology
        Type: general
      – SubjectFull: Organic thin films
        Type: general
      – SubjectFull: Stability (Mechanics)
        Type: general
      – SubjectFull: Flexible electronics
        Type: general
    Titles:
      – TitleFull: A Dual‐Function Elastomer Enables Highly Efficient and Stretchable Layer‐by‐Layer Organic Solar Cells.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Cheng, Yetai
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            NameFull: Yan, Xing
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            NameFull: Wang, Junjie
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            NameFull: Chen, Ya‐Nan
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            NameFull: Ran, Guangliu
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            NameFull: Li, Yonghuan
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            NameFull: Nie, Qing
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            NameFull: Gu, Chunyu
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            NameFull: Lu, Hao
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            NameFull: Bo, Zhishan
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            NameFull: Liu, Yahui
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          Dates:
            – D: 01
              M: 07
              Text: 7/1/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 16146832
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              Value: 16
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              Value: 25
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            – TitleFull: Advanced Energy Materials
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