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Greener Colloidal Ink Engineering and Local Solidification Control for High‐Performance Slot‐Die Coated Perovskite Solar Modules.

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Title: Greener Colloidal Ink Engineering and Local Solidification Control for High‐Performance Slot‐Die Coated Perovskite Solar Modules.
Authors: Sangale, Sushil Shivaji1,2 (AUTHOR), Barma, Sunil Vinod3 (AUTHOR), Kwon, Sung‐Nam1 (AUTHOR), Sung, Shi‐Joon2 (AUTHOR), Kim, Dae‐Hwan2 (AUTHOR), Byeok Jo, Sae3,4 (AUTHOR), Na, Seok‐In1 (AUTHOR) nsi@jbnu.ac.kr
Source: Advanced Energy Materials. 4/15/2026, Vol. 16 Issue 15, p1-16. 16p.
Subject Terms: *Iodobenzene, *Ink, *Solar cells, *Efficiency of photovoltaic cells, *Coating processes, *Surface coatings, *Poisons
Abstract: Perovskite solar cells (PSCs) have emerged as leading candidates for next‐generation photovoltaics; however, translating laboratory‐scale efficiencies to industrial production remains limited by key challenges such as achieving high‐quality film and addressing solvent toxicity. To overcome these limitations, we formulate colloidal ink by incorporating iodobenzene (Iodo) as an environmentally sustainable additive into a DMSO‐based system, enabling scalable film fabrication via slot‐die coating. It is found that Iodo‐based additives enhance wettability, facilitate the formation of larger colloidal particles, and enable controlled solidification through solvent evaporation kinetics. Specifically, the inclusion of Iodo modulates colloidal size and evaporation behavior, which in turn reduces the effective nucleation barrier and promotes directional grain growth. This leads to the formation of dense, uniform films with improved crystallinity and minimal defects. Devices fabricated using Iodo‐based ink achieved an efficiency of up to 22.3% (the highest reported efficiency in a highly toxic DMF‐free system), encapsulated devices retaining 85% of their initial value after 1200 h of maximum power point tracking (MPPT) and 77% after 8400 h (unencapsulated devices stored in the dark), demonstrating excellent operational and long‐term stability. Furthermore, the DMF‐free, DMSO‐based ink shows excellent scalability, achieving efficiencies of 21% and 19.5% for 2.7 and 31.50 cm2 modules, respectively. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
FullText Text:
  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 193014704
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Label: Title
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  Data: Greener Colloidal Ink Engineering and Local Solidification Control for High‐Performance Slot‐Die Coated Perovskite Solar Modules.
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  Data: <searchLink fieldCode="AR" term="%22Sangale%2C+Sushil+Shivaji%22">Sangale, Sushil Shivaji</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Barma%2C+Sunil+Vinod%22">Barma, Sunil Vinod</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kwon%2C+Sung‐Nam%22">Kwon, Sung‐Nam</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sung%2C+Shi‐Joon%22">Sung, Shi‐Joon</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kim%2C+Dae‐Hwan%22">Kim, Dae‐Hwan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Byeok+Jo%2C+Sae%22">Byeok Jo, Sae</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Na%2C+Seok‐In%22">Na, Seok‐In</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> nsi@jbnu.ac.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22Advanced+Energy+Materials%22">Advanced Energy Materials</searchLink>. 4/15/2026, Vol. 16 Issue 15, p1-16. 16p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Iodobenzene%22">Iodobenzene</searchLink><br />*<searchLink fieldCode="DE" term="%22Ink%22">Ink</searchLink><br />*<searchLink fieldCode="DE" term="%22Solar+cells%22">Solar cells</searchLink><br />*<searchLink fieldCode="DE" term="%22Efficiency+of+photovoltaic+cells%22">Efficiency of photovoltaic cells</searchLink><br />*<searchLink fieldCode="DE" term="%22Coating+processes%22">Coating processes</searchLink><br />*<searchLink fieldCode="DE" term="%22Surface+coatings%22">Surface coatings</searchLink><br />*<searchLink fieldCode="DE" term="%22Poisons%22">Poisons</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Perovskite solar cells (PSCs) have emerged as leading candidates for next‐generation photovoltaics; however, translating laboratory‐scale efficiencies to industrial production remains limited by key challenges such as achieving high‐quality film and addressing solvent toxicity. To overcome these limitations, we formulate colloidal ink by incorporating iodobenzene (Iodo) as an environmentally sustainable additive into a DMSO‐based system, enabling scalable film fabrication via slot‐die coating. It is found that Iodo‐based additives enhance wettability, facilitate the formation of larger colloidal particles, and enable controlled solidification through solvent evaporation kinetics. Specifically, the inclusion of Iodo modulates colloidal size and evaporation behavior, which in turn reduces the effective nucleation barrier and promotes directional grain growth. This leads to the formation of dense, uniform films with improved crystallinity and minimal defects. Devices fabricated using Iodo‐based ink achieved an efficiency of up to 22.3% (the highest reported efficiency in a highly toxic DMF‐free system), encapsulated devices retaining 85% of their initial value after 1200 h of maximum power point tracking (MPPT) and 77% after 8400 h (unencapsulated devices stored in the dark), demonstrating excellent operational and long‐term stability. Furthermore, the DMF‐free, DMSO‐based ink shows excellent scalability, achieving efficiencies of 21% and 19.5% for 2.7 and 31.50 cm2 modules, respectively. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=193014704
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/aenm.202504928
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 1
    Subjects:
      – SubjectFull: Iodobenzene
        Type: general
      – SubjectFull: Ink
        Type: general
      – SubjectFull: Solar cells
        Type: general
      – SubjectFull: Efficiency of photovoltaic cells
        Type: general
      – SubjectFull: Coating processes
        Type: general
      – SubjectFull: Surface coatings
        Type: general
      – SubjectFull: Poisons
        Type: general
    Titles:
      – TitleFull: Greener Colloidal Ink Engineering and Local Solidification Control for High‐Performance Slot‐Die Coated Perovskite Solar Modules.
        Type: main
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          Name:
            NameFull: Sangale, Sushil Shivaji
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            NameFull: Barma, Sunil Vinod
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            NameFull: Kwon, Sung‐Nam
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            NameFull: Sung, Shi‐Joon
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            NameFull: Kim, Dae‐Hwan
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            NameFull: Byeok Jo, Sae
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            NameFull: Na, Seok‐In
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            – D: 15
              M: 04
              Text: 4/15/2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 16146832
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              Value: 16
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              Value: 15
          Titles:
            – TitleFull: Advanced Energy Materials
              Type: main
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