Laser fired contacts applied to the rear surface of heterojunction silicon solar cells
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| Title: | Laser fired contacts applied to the rear surface of heterojunction silicon solar cells |
|---|---|
| Authors: | Martin, I.1 isidro.martin@upc.edu, Labrune, M.2,3, Salomon, A.3, Roca i Cabarrocas, P.2, Alcubilla, R.1 |
| Source: | Solar Energy Materials & Solar Cells. Nov2011, Vol. 95 Issue 11, p3119-3123. 5p. |
| Subjects: | Heterojunctions, Silicon solar cells, Microfabrication, Amorphous substances, Electric potential, Electroluminescence, Laser peening, Semiconductor doping |
| Abstract: | Abstract: In this work, we fabricate heterojunction silicon solar cells on p-type substrates whose rear surface configuration is based on dielectric passivation and laser fired contacts (LFC cells). This is an alternative to boron-doped amorphous silicon film, with which we also fabricate solar cells for direct comparison (HJ cells). As substrates, 3.5 and 0.8Ωcm p-type double-side polished FZ c-Si wafers are used. Regarding surface passivation for highly doped substrates, LFC configuration has some advantage due to the higher difficulty in creating an efficient amorphous back surface field. Additionally, those substrates are also more advantageous in terms of carrier injection when the rear surface is locally contacted. Thus LFC cells made on 0.8Ωcm substrates reach V oc values up to 680mV, in the same range as that of their HJ cell counterpart, with better FF demonstrating that LFC configuration is a feasible alternative for highly doped substrates. Focusing on the impact of the distance between rear contacts on cell performance, we found a trade-off between open circuit voltage V oc and fill factor FF. Finally electroluminescence characterization and the dependence of V oc on pitch, modeled by Fischer''s equation, indicate that the depassivated area due to the laser processing of the contacts is bigger than the contacted area. [Copyright &y& Elsevier] |
| Copyright of Solar Energy Materials & Solar Cells 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: 63981107 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Laser fired contacts applied to the rear surface of heterojunction silicon solar cells – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Martin%2C+I%2E%22">Martin, I.</searchLink><relatesTo>1</relatesTo><i> isidro.martin@upc.edu</i><br /><searchLink fieldCode="AR" term="%22Labrune%2C+M%2E%22">Labrune, M.</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Salomon%2C+A%2E%22">Salomon, A.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Roca+i+Cabarrocas%2C+P%2E%22">Roca i Cabarrocas, P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Alcubilla%2C+R%2E%22">Alcubilla, R.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Solar+Energy+Materials+%26+Solar+Cells%22">Solar Energy Materials & Solar Cells</searchLink>. Nov2011, Vol. 95 Issue 11, p3119-3123. 5p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Heterojunctions%22">Heterojunctions</searchLink><br /><searchLink fieldCode="DE" term="%22Silicon+solar+cells%22">Silicon solar cells</searchLink><br /><searchLink fieldCode="DE" term="%22Microfabrication%22">Microfabrication</searchLink><br /><searchLink fieldCode="DE" term="%22Amorphous+substances%22">Amorphous substances</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+potential%22">Electric potential</searchLink><br /><searchLink fieldCode="DE" term="%22Electroluminescence%22">Electroluminescence</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+peening%22">Laser peening</searchLink><br /><searchLink fieldCode="DE" term="%22Semiconductor+doping%22">Semiconductor doping</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: In this work, we fabricate heterojunction silicon solar cells on p-type substrates whose rear surface configuration is based on dielectric passivation and laser fired contacts (LFC cells). This is an alternative to boron-doped amorphous silicon film, with which we also fabricate solar cells for direct comparison (HJ cells). As substrates, 3.5 and 0.8Ωcm p-type double-side polished FZ c-Si wafers are used. Regarding surface passivation for highly doped substrates, LFC configuration has some advantage due to the higher difficulty in creating an efficient amorphous back surface field. Additionally, those substrates are also more advantageous in terms of carrier injection when the rear surface is locally contacted. Thus LFC cells made on 0.8Ωcm substrates reach V oc values up to 680mV, in the same range as that of their HJ cell counterpart, with better FF demonstrating that LFC configuration is a feasible alternative for highly doped substrates. Focusing on the impact of the distance between rear contacts on cell performance, we found a trade-off between open circuit voltage V oc and fill factor FF. Finally electroluminescence characterization and the dependence of V oc on pitch, modeled by Fischer''s equation, indicate that the depassivated area due to the laser processing of the contacts is bigger than the contacted area. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Solar Energy Materials & Solar Cells 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.solmat.2011.06.049 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 5 StartPage: 3119 Subjects: – SubjectFull: Heterojunctions Type: general – SubjectFull: Silicon solar cells Type: general – SubjectFull: Microfabrication Type: general – SubjectFull: Amorphous substances Type: general – SubjectFull: Electric potential Type: general – SubjectFull: Electroluminescence Type: general – SubjectFull: Laser peening Type: general – SubjectFull: Semiconductor doping Type: general Titles: – TitleFull: Laser fired contacts applied to the rear surface of heterojunction silicon solar cells Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Martin, I. – PersonEntity: Name: NameFull: Labrune, M. – PersonEntity: Name: NameFull: Salomon, A. – PersonEntity: Name: NameFull: Roca i Cabarrocas, P. – PersonEntity: Name: NameFull: Alcubilla, R. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2011 Type: published Y: 2011 Identifiers: – Type: issn-print Value: 09270248 Numbering: – Type: volume Value: 95 – Type: issue Value: 11 Titles: – TitleFull: Solar Energy Materials & Solar Cells Type: main |
| ResultId | 1 |
