Towards a III-V Solar Cell with a Metamorphic Graded Buffer Directly Grown on V-Groove Si Substrates

Theresa Saenz; John Mangum; Olivia Schneble; Ivan Garcia; Ryan France; William McMahon; Jeramy Zimmerman; Emily Warren

doi:10.1109/PVSC43889.2021.9518609

Towards a III-V Solar Cell with a Metamorphic Graded Buffer Directly Grown on V-Groove Si Substrates

Theresa Saenz, John Mangum, Olivia Schneble, Ivan Garcia, Ryan France, William McMahon, Jeramy Zimmerman, Emily Warren

Chemistry and Nanoscience

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

1 Scopus Citations

Abstract

V-groove Si substrates offer a promising route for the direct growth of III-V solar cells on low-cost, photovoltaic-grade Si. In this work, we develop a method for coalescing GaP nucleated on V-groove substrates into thin films suitable for the growth of III-V solar cells. We demonstrate the ability to suppress nucleation-related defects by modifying the V-groove substrate to cover the (0 0 1)-oriented Si V-groove tops with SiNx. A threading dislocation density (TDD) of 5 × 107 cm-2 was measured with electron channeling contrast imaging. Continuing work will focus on further reducing the TDD and the growth of a GaAs solar cell on a GaP on V-groove Si template.

Original language	American English
Pages	1921-1924
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC43889.2021.9518609 https://doi.org/10.1109/PVSC43889.2021.9518609
State	Published - 20 Jun 2021
Event	48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States Duration: 20 Jun 2021 → 25 Jun 2021

Conference

Conference	48th IEEE Photovoltaic Specialists Conference, PVSC 2021
Country/Territory	United States
City	Fort Lauderdale
Period	20/06/21 → 25/06/21

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

NREL Publication Number

NREL/CP-5900-79020

Keywords

Heteroepitaxy
III-V solar cells
low cost substrates
nanopatterning

UN SDGs

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

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Saenz, T., Mangum, J., Schneble, O., Garcia, I., France, R., McMahon, W., Zimmerman, J., & Warren, E. (2021). Towards a III-V Solar Cell with a Metamorphic Graded Buffer Directly Grown on V-Groove Si Substrates. 1921-1924. Paper presented at 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, Fort Lauderdale, United States. https://doi.org/10.1109/PVSC43889.2021.9518609, https://doi.org/10.1109/PVSC43889.2021.9518609

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Saenz, T , Mangum, J, Schneble, O, Garcia, I, France, R , McMahon, W, Zimmerman, J & Warren, E 2021, 'Towards a III-V Solar Cell with a Metamorphic Graded Buffer Directly Grown on V-Groove Si Substrates', Paper presented at 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, Fort Lauderdale, United States, 20/06/21 - 25/06/21 pp. 1921-1924. https://doi.org/10.1109/PVSC43889.2021.9518609, https://doi.org/10.1109/PVSC43889.2021.9518609

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AU - Saenz, Theresa

AU - Mangum, John

AU - Schneble, Olivia

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AU - France, Ryan

AU - McMahon, William

AU - Zimmerman, Jeramy

AU - Warren, Emily

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AB - V-groove Si substrates offer a promising route for the direct growth of III-V solar cells on low-cost, photovoltaic-grade Si. In this work, we develop a method for coalescing GaP nucleated on V-groove substrates into thin films suitable for the growth of III-V solar cells. We demonstrate the ability to suppress nucleation-related defects by modifying the V-groove substrate to cover the (0 0 1)-oriented Si V-groove tops with SiNx. A threading dislocation density (TDD) of 5 × 107 cm-2 was measured with electron channeling contrast imaging. Continuing work will focus on further reducing the TDD and the growth of a GaAs solar cell on a GaP on V-groove Si template.

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KW - low cost substrates

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Towards a III-V Solar Cell with a Metamorphic Graded Buffer Directly Grown on V-Groove Si Substrates

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

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