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Decoupling of Optical and Electrical Properties of Rear Contact CIGS Solar Cells
INL Int Iberian Nanotechnol Lab, P-4715330 Braga, Portugal;Univ Aveiro, Dept Fis, Campus Univ Santiago, P-3810193 Aveiro, Portugal;Univ Aveiro, I3N, Campus Univ Santiago, P-3810193 Aveiro, Portugal.
INL Int Iberian Nanotechnol Lab, P-4715330 Braga, Portugal.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0002-6449-3321
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.ORCID iD: 0000-0002-2402-5427
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2019 (English)In: IEEE Journal of Photovoltaics, ISSN 2156-3381, E-ISSN 2156-3403, Vol. 9, no 6, p. 1857-1862Article in journal (Refereed) Published
Abstract [en]

A novel architecture that comprises rear interface passivation and increased rear optical reflection is presented with the following advantages: i) enhanced optical reflection is achieved by the deposition of a metallic layer over the Mo rear contact; ii) improved interface qualitywithCIGS by adding a sputteredAl 2O 3 layer over the metallic layer; and, iii) optimal ohmic electrical contact ensured by rear-openings refilling with a second layer of Mo as generally observed from the growth of CIGS on Mo. Hence, a decoupling between the electrical function and the optical purpose of the rear substrate is achieved. We present in detail the manufacturing procedure of such type of architecture together with its benefits and caveats. A preliminary analysis showing an architecture proof-of-concept is presented and discussed.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2019. Vol. 9, no 6, p. 1857-1862
Keywords [en]
Cu(In, Ga)Se 2 (CIGS), passivation, semiconductors, ultrathin
National Category
Condensed Matter Physics Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-400095DOI: 10.1109/JPHOTOV.2019.2933357ISI: 000504310400054OAI: oai:DiVA.org:uu-400095DiVA, id: diva2:1384390
Funder
EU, Horizon 2020, 720887EU, Horizon 2020, 029696Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-01-13Bibliographically approved

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Bose, SouravHultqvist, AdamChen, Wei-ChaoDonzel-Gargand, OlivierEdoff, Marika

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Bose, SouravHultqvist, AdamChen, Wei-ChaoDonzel-Gargand, OlivierEdoff, MarikaSalome, Pedro M. P.
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IEEE Journal of Photovoltaics
Condensed Matter PhysicsEngineering and Technology

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