Nanoscale Investigation of Grain Boundary Characteristics of Single-Crystalline-Like GaAs Films and Solar Cells on Flexible Metal Substrates

Harvey Guthrey; Pavel Dutta; Jonathan Poplawsky; Monika Rathi; Devendra Khatiwada; Sicong Sun; Yao Yao; Bo Yu; Eduard Galstyan; Venkat Selvamanickam

doi:10.1109/PVSC.2018.8547743

Nanoscale Investigation of Grain Boundary Characteristics of Single-Crystalline-Like GaAs Films and Solar Cells on Flexible Metal Substrates

Harvey Guthrey, Pavel Dutta, Jonathan Poplawsky, Monika Rathi, Devendra Khatiwada, Sicong Sun, Yao Yao, Bo Yu, Eduard Galstyan, Venkat Selvamanickam

Materials Science

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

1 Scopus Citations

Abstract

High-resolution imaging with nanometer spatial resolution was carried out to unravel the grain and grain boundary (GB) properties of single-crystalline-like n-type GaAs films and single-junction solar cells on epi-ready flexible metal substrates. Electron Back Scattered Diffraction studies revealed ultra-low angle GBs with the presence of twin boundaries. The pn junction carrier collection properties were directly imaged using cross-sectional Electron Beam Induced Current measurements. Low-temperature Cathodoluminescence imaging indicated a strong component of optical emission from the GBs. Comprehensive studies of the structural, chemical, optical and electrical properties were carried out to unravel the fundamental GB properties of flexible GaAs films on metal substrates.

Original language	American English
Pages	58-61
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC.2018.8547743 https://doi.org/10.1109/PVSC.2018.8547743
State	Published - 26 Nov 2018
Event	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States Duration: 10 Jun 2018 → 15 Jun 2018

Conference

Conference	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country/Territory	United States
City	Waikoloa Village
Period	10/06/18 → 15/06/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

NREL Publication Number

NREL/CP-5K00-73684

Keywords

epitaxial growth
flexible substrate
gallium arsenide
MOCVD
photovoltaic cells

UN SDGs

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

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Guthrey, H., Dutta, P., Poplawsky, J., Rathi, M., Khatiwada, D., Sun, S., Yao, Y., Yu, B., Galstyan, E., & Selvamanickam, V. (2018). Nanoscale Investigation of Grain Boundary Characteristics of Single-Crystalline-Like GaAs Films and Solar Cells on Flexible Metal Substrates. 58-61. Paper presented at 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States. https://doi.org/10.1109/PVSC.2018.8547743, https://doi.org/10.1109/PVSC.2018.8547743

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abstract = "High-resolution imaging with nanometer spatial resolution was carried out to unravel the grain and grain boundary (GB) properties of single-crystalline-like n-type GaAs films and single-junction solar cells on epi-ready flexible metal substrates. Electron Back Scattered Diffraction studies revealed ultra-low angle GBs with the presence of twin boundaries. The pn junction carrier collection properties were directly imaged using cross-sectional Electron Beam Induced Current measurements. Low-temperature Cathodoluminescence imaging indicated a strong component of optical emission from the GBs. Comprehensive studies of the structural, chemical, optical and electrical properties were carried out to unravel the fundamental GB properties of flexible GaAs films on metal substrates.",

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Guthrey, H, Dutta, P, Poplawsky, J, Rathi, M, Khatiwada, D, Sun, S, Yao, Y, Yu, B, Galstyan, E & Selvamanickam, V 2018, 'Nanoscale Investigation of Grain Boundary Characteristics of Single-Crystalline-Like GaAs Films and Solar Cells on Flexible Metal Substrates', Paper presented at 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States, 10/06/18 - 15/06/18 pp. 58-61. https://doi.org/10.1109/PVSC.2018.8547743, https://doi.org/10.1109/PVSC.2018.8547743

Nanoscale Investigation of Grain Boundary Characteristics of Single-Crystalline-Like GaAs Films and Solar Cells on Flexible Metal Substrates. / Guthrey, Harvey; Dutta, Pavel; Poplawsky, Jonathan et al.
2018. 58-61 Paper presented at 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States.

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

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AU - Guthrey, Harvey

AU - Dutta, Pavel

AU - Poplawsky, Jonathan

AU - Rathi, Monika

AU - Khatiwada, Devendra

AU - Sun, Sicong

AU - Yao, Yao

AU - Yu, Bo

AU - Galstyan, Eduard

AU - Selvamanickam, Venkat

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AB - High-resolution imaging with nanometer spatial resolution was carried out to unravel the grain and grain boundary (GB) properties of single-crystalline-like n-type GaAs films and single-junction solar cells on epi-ready flexible metal substrates. Electron Back Scattered Diffraction studies revealed ultra-low angle GBs with the presence of twin boundaries. The pn junction carrier collection properties were directly imaged using cross-sectional Electron Beam Induced Current measurements. Low-temperature Cathodoluminescence imaging indicated a strong component of optical emission from the GBs. Comprehensive studies of the structural, chemical, optical and electrical properties were carried out to unravel the fundamental GB properties of flexible GaAs films on metal substrates.

KW - epitaxial growth

KW - flexible substrate

KW - gallium arsenide

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KW - photovoltaic cells

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Guthrey H, Dutta P, Poplawsky J, Rathi M, Khatiwada D, Sun S et al.. Nanoscale Investigation of Grain Boundary Characteristics of Single-Crystalline-Like GaAs Films and Solar Cells on Flexible Metal Substrates. 2018. Paper presented at 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States. doi: 10.1109/PVSC.2018.8547743, 10.1109/PVSC.2018.8547743

Nanoscale Investigation of Grain Boundary Characteristics of Single-Crystalline-Like GaAs Films and Solar Cells on Flexible Metal Substrates

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

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