Mapping Current Collection in Cross Section: The Case of Copper-Doped CdTe Solar Cells

Eric Colegrove; Niranjana Kumar; Abdul Shaik; Trumann Walker; Tara Nietzold; Barry Lai; Michael Stuckelberger; Mariana Bertoni

doi:10.1109/PVSC45281.2020.9300979

Mapping Current Collection in Cross Section: The Case of Copper-Doped CdTe Solar Cells

Eric Colegrove, Niranjana Kumar, Abdul Shaik, Trumann Walker, Tara Nietzold, Barry Lai, Michael Stuckelberger, Mariana Bertoni

Materials Science

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

2 Scopus Citations

Abstract

For decades, copper has been used to improve the performance of cadmium telluride thin film solar cells. However, it has also been shown to be the main cause of metastability in CdTe. Recently a low activation energy has been reported for the thermal diffusion of Cu in CdTe explaining the ease of motion that it has under moderate temperatures. The community consensus is that copper segregates to the absorber grain boundaries, where it's either beneficial or detrimental to device performance depending on its concentration. Using nanoscale X-ray micrsocopy and a two-dimensional drift-diffusion model we present a preliminary correlation between local copper distribution and electrical performance of a single-junction CdTe/CdS solar cell.

Original language	American English
Pages	2178-2180
Number of pages	3
DOIs	https://doi.org/10.1109/PVSC45281.2020.9300979 https://doi.org/10.1109/PVSC45281.2020.9300979
State	Published - 14 Jun 2020
Event	47th IEEE Photovoltaic Specialists Conference, PVSC 2020 - Calgary, Canada Duration: 15 Jun 2020 → 21 Aug 2020

Conference

Conference	47th IEEE Photovoltaic Specialists Conference, PVSC 2020
Country/Territory	Canada
City	Calgary
Period	15/06/20 → 21/08/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

NREL Publication Number

NREL/CP-5K00-79359

Keywords

CdTe
drift-diffusion modeling
X-ray beam induced current

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Colegrove, E., Kumar, N., Shaik, A., Walker, T., Nietzold, T., Lai, B., Stuckelberger, M., & Bertoni, M. (2020). Mapping Current Collection in Cross Section: The Case of Copper-Doped CdTe Solar Cells. 2178-2180. Paper presented at 47th IEEE Photovoltaic Specialists Conference, PVSC 2020, Calgary, Canada. https://doi.org/10.1109/PVSC45281.2020.9300979, https://doi.org/10.1109/PVSC45281.2020.9300979

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abstract = "For decades, copper has been used to improve the performance of cadmium telluride thin film solar cells. However, it has also been shown to be the main cause of metastability in CdTe. Recently a low activation energy has been reported for the thermal diffusion of Cu in CdTe explaining the ease of motion that it has under moderate temperatures. The community consensus is that copper segregates to the absorber grain boundaries, where it's either beneficial or detrimental to device performance depending on its concentration. Using nanoscale X-ray micrsocopy and a two-dimensional drift-diffusion model we present a preliminary correlation between local copper distribution and electrical performance of a single-junction CdTe/CdS solar cell.",

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Colegrove, E, Kumar, N, Shaik, A, Walker, T, Nietzold, T, Lai, B, Stuckelberger, M & Bertoni, M 2020, 'Mapping Current Collection in Cross Section: The Case of Copper-Doped CdTe Solar Cells', Paper presented at 47th IEEE Photovoltaic Specialists Conference, PVSC 2020, Calgary, Canada, 15/06/20 - 21/08/20 pp. 2178-2180. https://doi.org/10.1109/PVSC45281.2020.9300979, https://doi.org/10.1109/PVSC45281.2020.9300979

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T1 - Mapping Current Collection in Cross Section: The Case of Copper-Doped CdTe Solar Cells

AU - Colegrove, Eric

AU - Kumar, Niranjana

AU - Shaik, Abdul

AU - Walker, Trumann

AU - Nietzold, Tara

AU - Lai, Barry

AU - Stuckelberger, Michael

AU - Bertoni, Mariana

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AB - For decades, copper has been used to improve the performance of cadmium telluride thin film solar cells. However, it has also been shown to be the main cause of metastability in CdTe. Recently a low activation energy has been reported for the thermal diffusion of Cu in CdTe explaining the ease of motion that it has under moderate temperatures. The community consensus is that copper segregates to the absorber grain boundaries, where it's either beneficial or detrimental to device performance depending on its concentration. Using nanoscale X-ray micrsocopy and a two-dimensional drift-diffusion model we present a preliminary correlation between local copper distribution and electrical performance of a single-junction CdTe/CdS solar cell.

KW - CdTe

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KW - X-ray beam induced current

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T2 - 47th IEEE Photovoltaic Specialists Conference, PVSC 2020

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ER -

Mapping Current Collection in Cross Section: The Case of Copper-Doped CdTe Solar Cells

Abstract

Conference

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Keywords

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