The Effect of Ga Content on the Selenization of Co-Evaporated CuGa/In Films and Their Photovoltaic Performance

Christopher P. Muzzillo; Lorelle M. Mansfield; Clay Dehart; Karen Bowers; Robert C. Reedy; Bobby To; Rommel Noufi; Kannan Ramanathan; Timothy J. Anderson

doi:10.1109/PVSC.2014.6925236

The Effect of Ga Content on the Selenization of Co-Evaporated CuGa/In Films and Their Photovoltaic Performance

Christopher P. Muzzillo, Lorelle M. Mansfield, Clay Dehart, Karen Bowers, Robert C. Reedy, Bobby To, Rommel Noufi, Kannan Ramanathan, Timothy J. Anderson

Materials Science

Research output: Contribution to conference › Paper › peer-review

8 Scopus Citations

Abstract

Thin CuGa/In films with varying composition were deposited by co-evaporation and then selenized in situ with evaporated selenium. This growth process was interrupted at various stages to study the selenization behavior of metal precursors by GIXRD, SIMS, XRF, SEM, and EPMA. Precursor phase constitution and morphology were found to be similar to well-studied sputtered precursors. The phase evolution during selenization was also found to be similar to sputtered precursors, with greater Ga/(Ga+In) compositions requiring longer selenization time to completely form the chalcopyrite phase. Solar cells were fabricated with absorbers of varying composition and characterized by JV measurements. Relatively high Ga contents could be reached before photovoltaic performance degraded significantly. Champion power conversion efficiencies of 14.5, 14.4, and 12.2% were achieved with Ga/(Ga+In) ∼ 30, 50, and 70%, respectively.

Original language	American English
Pages	1649-1654
Number of pages	6
DOIs	https://doi.org/10.1109/PVSC.2014.6925236 https://doi.org/10.1109/PVSC.2014.6925236
State	Published - 15 Oct 2014
Event	40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States Duration: 8 Jun 2014 → 13 Jun 2014

Conference

Conference	40th IEEE Photovoltaic Specialist Conference, PVSC 2014
Country/Territory	United States
City	Denver
Period	8/06/14 → 13/06/14

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

NREL Publication Number

NREL/CP-5K00-63724

Keywords

CIGS
co-evaporation
Cu(In,Ga)Se
gallium content
selenization
wide band gap

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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Muzzillo, C. P., Mansfield, L. M., Dehart, C., Bowers, K., Reedy, R. C., To, B., Noufi, R., Ramanathan, K., & Anderson, T. J. (2014). The Effect of Ga Content on the Selenization of Co-Evaporated CuGa/In Films and Their Photovoltaic Performance. 1649-1654. Paper presented at 40th IEEE Photovoltaic Specialist Conference, PVSC 2014, Denver, United States. https://doi.org/10.1109/PVSC.2014.6925236, https://doi.org/10.1109/PVSC.2014.6925236

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title = "The Effect of Ga Content on the Selenization of Co-Evaporated CuGa/In Films and Their Photovoltaic Performance",

abstract = "Thin CuGa/In films with varying composition were deposited by co-evaporation and then selenized in situ with evaporated selenium. This growth process was interrupted at various stages to study the selenization behavior of metal precursors by GIXRD, SIMS, XRF, SEM, and EPMA. Precursor phase constitution and morphology were found to be similar to well-studied sputtered precursors. The phase evolution during selenization was also found to be similar to sputtered precursors, with greater Ga/(Ga+In) compositions requiring longer selenization time to completely form the chalcopyrite phase. Solar cells were fabricated with absorbers of varying composition and characterized by JV measurements. Relatively high Ga contents could be reached before photovoltaic performance degraded significantly. Champion power conversion efficiencies of 14.5, 14.4, and 12.2% were achieved with Ga/(Ga+In) ∼ 30, 50, and 70%, respectively.",

keywords = "CIGS, co-evaporation, Cu(In,Ga)Se, gallium content, selenization, wide band gap",

author = "Muzzillo, {Christopher P.} and Mansfield, {Lorelle M.} and Clay Dehart and Karen Bowers and Reedy, {Robert C.} and Bobby To and Rommel Noufi and Kannan Ramanathan and Anderson, {Timothy J.}",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; 40th IEEE Photovoltaic Specialist Conference, PVSC 2014 ; Conference date: 08-06-2014 Through 13-06-2014",

year = "2014",

month = oct,

day = "15",

doi = "10.1109/PVSC.2014.6925236",

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Muzzillo, CP , Mansfield, LM, Dehart, C, Bowers, K, Reedy, RC, To, B, Noufi, R, Ramanathan, K & Anderson, TJ 2014, 'The Effect of Ga Content on the Selenization of Co-Evaporated CuGa/In Films and Their Photovoltaic Performance', Paper presented at 40th IEEE Photovoltaic Specialist Conference, PVSC 2014, Denver, United States, 8/06/14 - 13/06/14 pp. 1649-1654. https://doi.org/10.1109/PVSC.2014.6925236, https://doi.org/10.1109/PVSC.2014.6925236

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T1 - The Effect of Ga Content on the Selenization of Co-Evaporated CuGa/In Films and Their Photovoltaic Performance

AU - Muzzillo, Christopher P.

AU - Mansfield, Lorelle M.

AU - Dehart, Clay

AU - Bowers, Karen

AU - Reedy, Robert C.

AU - To, Bobby

AU - Noufi, Rommel

AU - Ramanathan, Kannan

AU - Anderson, Timothy J.

PY - 2014/10/15

Y1 - 2014/10/15

N2 - Thin CuGa/In films with varying composition were deposited by co-evaporation and then selenized in situ with evaporated selenium. This growth process was interrupted at various stages to study the selenization behavior of metal precursors by GIXRD, SIMS, XRF, SEM, and EPMA. Precursor phase constitution and morphology were found to be similar to well-studied sputtered precursors. The phase evolution during selenization was also found to be similar to sputtered precursors, with greater Ga/(Ga+In) compositions requiring longer selenization time to completely form the chalcopyrite phase. Solar cells were fabricated with absorbers of varying composition and characterized by JV measurements. Relatively high Ga contents could be reached before photovoltaic performance degraded significantly. Champion power conversion efficiencies of 14.5, 14.4, and 12.2% were achieved with Ga/(Ga+In) ∼ 30, 50, and 70%, respectively.

AB - Thin CuGa/In films with varying composition were deposited by co-evaporation and then selenized in situ with evaporated selenium. This growth process was interrupted at various stages to study the selenization behavior of metal precursors by GIXRD, SIMS, XRF, SEM, and EPMA. Precursor phase constitution and morphology were found to be similar to well-studied sputtered precursors. The phase evolution during selenization was also found to be similar to sputtered precursors, with greater Ga/(Ga+In) compositions requiring longer selenization time to completely form the chalcopyrite phase. Solar cells were fabricated with absorbers of varying composition and characterized by JV measurements. Relatively high Ga contents could be reached before photovoltaic performance degraded significantly. Champion power conversion efficiencies of 14.5, 14.4, and 12.2% were achieved with Ga/(Ga+In) ∼ 30, 50, and 70%, respectively.

KW - CIGS

KW - co-evaporation

KW - Cu(In,Ga)Se

KW - gallium content

KW - selenization

KW - wide band gap

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M3 - Paper

AN - SCOPUS:84912101571

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T2 - 40th IEEE Photovoltaic Specialist Conference, PVSC 2014

Y2 - 8 June 2014 through 13 June 2014

ER -

The Effect of Ga Content on the Selenization of Co-Evaporated CuGa/In Films and Their Photovoltaic Performance

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

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