Studying the Recrystallization of Cu(InGa)Se2 Semiconductor Thin Films by Silver Bromide In-situ Treatment

Poudel, Deewakar; Lepetit, Thomas; Belfore, Benjamin; Palmiotti, Elizabeth; Ashrafee, Tasnuva; Karki, Shankar; Rajan, Grace; Rockett, Angus; Barreau, Nicolas; Marsillac, Sylvain

doi:10.1109/pvsc43889.2021.9518578

Studying the Recrystallization of Cu(InGa)Se₂ Semiconductor Thin Films by Silver Bromide In-situ Treatment

Journal Article · Sun Jun 20 00:00:00 EDT 2021 · Conference Record of the IEEE Photovoltaic Specialists Conference

DOI:https://doi.org/10.1109/pvsc43889.2021.9518578· OSTI ID:1991334

Poudel, Deewakar ^[1]; Lepetit, Thomas ^[2]; Belfore, Benjamin ^[3]; Palmiotti, Elizabeth ^[4]; Ashrafee, Tasnuva ^[3]; Karki, Shankar ^[3]; Rajan, Grace ^[3]; Rockett, Angus ^[4]; Barreau, Nicolas ^[2]; Marsillac, Sylvain ^[3]

Old Dominion University, Norfolk, VA (United States); Colorado School of Mines
Universite de Nantes (France)
Old Dominion University, Norfolk, VA (United States)
Colorado School of Mines, Golden, CO (United States)

Cu(In,Ga)Se₂ samples were fabricated using a 3-stage thermal co-evaporation process on molybdenum back contact at low temperature. The process of recrystallization was carried out in between the 2^nd and 3^rd stages by flashing 25 mg of AgBr for 2 minutes. A change in morphological structure was observed as small grains transformed into large grains, as confirmed by XRD and SEM measurements. The decrease of the Ga gradient, seen in the SIMS depth profile, suggests Ga interdiffusion due to AgBr treatment. Altogether, the AgBr treatment contributes to a general improvement in device performance as compared to the as-deposited devices.

View Accepted Manuscript (DOE)

Research Organization:: Colorado School of Mines, Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

Grant/Contract Number:: EE0007551

OSTI ID:: 1991334

Journal Information:: Conference Record of the IEEE Photovoltaic Specialists Conference, Journal Name: Conference Record of the IEEE Photovoltaic Specialists Conference Vol. 2021; ISSN 0160-8371

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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Studying the Recrystallization of Cu(InGa)Se2 Semiconductor Thin Films by Silver Bromide In-situ Treatment

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