Defect site engineering for charge recombination and stability via polymer surfactant incorporation with an ultra-small amount in perovskite solar cells.
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| Title: | Defect site engineering for charge recombination and stability via polymer surfactant incorporation with an ultra-small amount in perovskite solar cells. |
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| Authors: | Hong, Jungyun1 (AUTHOR), Kim, Hyebin1 (AUTHOR), Hwang, Inchan1 (AUTHOR) ihwang@kw.ac.kr |
| Source: | Organic Electronics. Oct2019, Vol. 73, p87-93. 7p. |
| Subjects: | Perovskite, Solar cells, Polymers, Crystallization kinetics, Surface active agents, Ethylene glycol |
| Abstract: | A reduction in defect sites that are produced in the process of perovskite crystallization is crucial for efficient perovskite solar cells. In this study, we incorporate an ultra-small amount (less than 0.1 wt%) of a non-volatile polymer additive, poly(ethylene glycol) tridecyl ether (PTE), into the perovskite precursor solution in order to regulate the crystallization kinetics. Even a tiny amount of PTE additives enables effectively to make film surface smooth, suppress charge recombination both between free charge carriers and between trapped and free charge carriers, and improve the electrical stability under continuous illumination. Our findings show that the defects are associated not only with charge recombination but also with electrical stability under illumination. Incorporating PTE additives, charge extraction is facilitated by a reduction in the loss of photogenerated charge carriers, leading to an improvement in photovoltaic efficiency with enhanced stability for the planar p-i-n perovskite solar cells. Image 1 • An ultra-small amount of non-volatile polymer surfactant additive is incorporated into the perovskite film. • Defects are reduced with realizing smooth perovskite film surface. • Bimolecular and trap-assisted recombination are suppressed, facilitating charge extraction. • Photovoltaic performance and operational stability are enhanced owing to a reduction in defects sites. [ABSTRACT FROM AUTHOR] |
| Copyright of Organic Electronics is the property of Elsevier B.V. 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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 137373862 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Defect site engineering for charge recombination and stability via polymer surfactant incorporation with an ultra-small amount in perovskite solar cells. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hong%2C+Jungyun%22">Hong, Jungyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kim%2C+Hyebin%22">Kim, Hyebin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hwang%2C+Inchan%22">Hwang, Inchan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ihwang@kw.ac.kr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Organic+Electronics%22">Organic Electronics</searchLink>. Oct2019, Vol. 73, p87-93. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Perovskite%22">Perovskite</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="%22Crystallization+kinetics%22">Crystallization kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+active+agents%22">Surface active agents</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylene+glycol%22">Ethylene glycol</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A reduction in defect sites that are produced in the process of perovskite crystallization is crucial for efficient perovskite solar cells. In this study, we incorporate an ultra-small amount (less than 0.1 wt%) of a non-volatile polymer additive, poly(ethylene glycol) tridecyl ether (PTE), into the perovskite precursor solution in order to regulate the crystallization kinetics. Even a tiny amount of PTE additives enables effectively to make film surface smooth, suppress charge recombination both between free charge carriers and between trapped and free charge carriers, and improve the electrical stability under continuous illumination. Our findings show that the defects are associated not only with charge recombination but also with electrical stability under illumination. Incorporating PTE additives, charge extraction is facilitated by a reduction in the loss of photogenerated charge carriers, leading to an improvement in photovoltaic efficiency with enhanced stability for the planar p-i-n perovskite solar cells. Image 1 • An ultra-small amount of non-volatile polymer surfactant additive is incorporated into the perovskite film. • Defects are reduced with realizing smooth perovskite film surface. • Bimolecular and trap-assisted recombination are suppressed, facilitating charge extraction. • Photovoltaic performance and operational stability are enhanced owing to a reduction in defects sites. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Organic Electronics is the property of Elsevier B.V. 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: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.orgel.2019.06.003 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 87 Subjects: – SubjectFull: Perovskite Type: general – SubjectFull: Solar cells Type: general – SubjectFull: Polymers Type: general – SubjectFull: Crystallization kinetics Type: general – SubjectFull: Surface active agents Type: general – SubjectFull: Ethylene glycol Type: general Titles: – TitleFull: Defect site engineering for charge recombination and stability via polymer surfactant incorporation with an ultra-small amount in perovskite solar cells. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hong, Jungyun – PersonEntity: Name: NameFull: Kim, Hyebin – PersonEntity: Name: NameFull: Hwang, Inchan IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 15661199 Numbering: – Type: volume Value: 73 Titles: – TitleFull: Organic Electronics Type: main |
| ResultId | 1 |
