Grain Enhancement in Polycrystalline CuGaSe2 by AgBr Vapor Treatment

Poudel, Deewakar; Belfore, Benjamin; Masters, Adam; Palmiotti, Elizabeth; Rockett, Angus; Marsillac, Sylvain

doi:10.1109/pvsc48317.2022.9938638

Grain Enhancement in Polycrystalline CuGaSe₂ by AgBr Vapor Treatment

Conference · Sun Jun 05 04:00:00 EDT 2022 · 2022 IEEE 49th Photovoltaics Specialists Conference (PVSC)

DOI:https://doi.org/10.1109/pvsc48317.2022.9938638· OSTI ID:1991349

Poudel, Deewakar ^[1]; Belfore, Benjamin ^[2]; Masters, Adam ^[2]; Palmiotti, Elizabeth ^[3]; Rockett, Angus ^[3]; Marsillac, Sylvain ^[2]

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

Copper Gallium diselenide (CuGaSe₂ or CGS) thin film were deposited using a three-stage thermal co-evaporation process on molybdenum coated soda lime glass. Recrystallization was carried after the second stage by flashing AgBr for 2 mins. The change in morphology, structure and depth profile were studied after the treatment. SEM and XRD showed an increase in grain size and enhanced crystallinity. Here, a decrease in sodium profile after the treatment was observed through SIMS measurements. Overall, AgBr treatment of CGS seems to be promising for the improvement of film quality, which could help with enhanced device fabrication in the future.

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

Sponsoring Organization:: USDOE

DOE Contract Number:: EE0007551

OSTI ID:: 1991349

Conference Information:: Journal Name: 2022 IEEE 49th Photovoltaics Specialists Conference (PVSC)

Country of Publication:: United States

Language:: English

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