Fabrication, Measurement, and Modeling of GaInP/GaAs Three-Terminal Cells and Strings

John Geisz; Jeronimo Buencuerpo; William McMahon; Talysa Klein; Adele Tamboli; Emily Warren

doi:10.1109/PVSC43889.2021.9518913

Fabrication, Measurement, and Modeling of GaInP/GaAs Three-Terminal Cells and Strings

John Geisz, Jeronimo Buencuerpo, William McMahon, Talysa Klein, Adele Tamboli, Emily Warren

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

6 Scopus Citations

Abstract

Three-terminal (3T) GaInP/GaAs solar cells are fabricated from inverted-grown monolithic tandems and processed with external metal contacts suitable for easy interconnection. Prototype 3T tandems both with and without tunnel junctions are demonstrated. They are characterized as a function of two independent variables in a variety of configurations, with each configuration holding one of the contacts common to two source-meter units (SMUs). Each of these different measurement configurations completely characterizes the device by transforming the results into 6 unique device parameters and plotting the total power parametrically in two dimensions. The performance is fit using a 3T optoelectronic model that includes luminescent coupling as well as important resistances. Eight of these devices are interconnected in various voltage-constrained configurations to form voltage-matched (VM) strings. Measurement and analysis of these III-V devices and strings are generally applicable to all 3T photovoltaics.

Original language	American English
Pages	154-157
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC43889.2021.9518913 https://doi.org/10.1109/PVSC43889.2021.9518913
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-5900-78914

Keywords

photovoltaics
solar cell measurements
three-terminal
voltage-matched modules

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Geisz, J., Buencuerpo, J., McMahon, W., Klein, T., Tamboli, A., & Warren, E. (2021). Fabrication, Measurement, and Modeling of GaInP/GaAs Three-Terminal Cells and Strings. 154-157. Paper presented at 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, Fort Lauderdale, United States. https://doi.org/10.1109/PVSC43889.2021.9518913, https://doi.org/10.1109/PVSC43889.2021.9518913

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Geisz, J, Buencuerpo, J, McMahon, W, Klein, T, Tamboli, A & Warren, E 2021, 'Fabrication, Measurement, and Modeling of GaInP/GaAs Three-Terminal Cells and Strings', Paper presented at 48th IEEE Photovoltaic Specialists Conference, PVSC 2021, Fort Lauderdale, United States, 20/06/21 - 25/06/21 pp. 154-157. https://doi.org/10.1109/PVSC43889.2021.9518913, https://doi.org/10.1109/PVSC43889.2021.9518913

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AU - Geisz, John

AU - Buencuerpo, Jeronimo

AU - McMahon, William

AU - Klein, Talysa

AU - Tamboli, Adele

AU - Warren, Emily

PY - 2021/6/20

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AB - Three-terminal (3T) GaInP/GaAs solar cells are fabricated from inverted-grown monolithic tandems and processed with external metal contacts suitable for easy interconnection. Prototype 3T tandems both with and without tunnel junctions are demonstrated. They are characterized as a function of two independent variables in a variety of configurations, with each configuration holding one of the contacts common to two source-meter units (SMUs). Each of these different measurement configurations completely characterizes the device by transforming the results into 6 unique device parameters and plotting the total power parametrically in two dimensions. The performance is fit using a 3T optoelectronic model that includes luminescent coupling as well as important resistances. Eight of these devices are interconnected in various voltage-constrained configurations to form voltage-matched (VM) strings. Measurement and analysis of these III-V devices and strings are generally applicable to all 3T photovoltaics.

KW - photovoltaics

KW - solar cell measurements

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KW - voltage-matched modules

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Fabrication, Measurement, and Modeling of GaInP/GaAs Three-Terminal Cells and Strings

Abstract

Conference

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NREL Publication Number

Keywords

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