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Development of MOVPE grown GaSb-on-GaAs interfacial misfit solar cells

Kessler-Lewis, Emily S. ; Polly, Stephen J. ; Nelson, George T. ; Slocum, Michael A. ; Pokharel, Nikhil ; Ahrenkiel, Phil ; Hubbard, Seth M.

Journal of applied physics, 2023-06, Vol.133 (24) [Periódico revisado por pares]

Melville: American Institute of Physics

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Título:
Development of MOVPE grown GaSb-on-GaAs interfacial misfit solar cells
Autor: Kessler-Lewis, Emily S. ; Polly, Stephen J. ; Nelson, George T. ; Slocum, Michael A. ; Pokharel, Nikhil ; Ahrenkiel, Phil ; Hubbard, Seth M.
Assuntos: Applied physics ; Carrier lifetime ; Diffusion length ; Dislocation density ; Epitaxial growth ; Gallium antimonides ; Gallium arsenide ; Minority carriers ; Molecular beam epitaxy ; Open circuit voltage ; Photovoltaic cells ; Solar cells ; Threading dislocations ; Vapor phase epitaxy ; Vapor phases
É parte de: Journal of applied physics, 2023-06, Vol.133 (24)
Descrição: GaSb grown on GaAs through interfacial misfit (IMF) arrays grown via molecular beam epitaxy has been heavily studied; there is limited research, however, on IMF growth through metal-organic vapor phase epitaxy. To demonstrate viability for integration in a multijunction solar cell for terrestrial use, it is imperative to demonstrate high quality GaSb grown on GaAs through metal-organic vapor phase epitaxy. The preferred gallium precursors for n-type and p-type GaSb for longest minority carrier diffusion length were determined to be trimethylgallium and triethylgallium, respectively. A heteroepitaxial GaSb-on-GaAs device attained an open-circuit voltage of 190 mV and an efficiency of 2.2%. Extracted threading dislocation density from the minority carrier lifetime for the heteroepitaxial GaSb-on-GaAs device was determined to be 7.5 × 10 6 cm − 2. In a modeled multijunction solar cell, this device attributes to an overall efficiency of 33.1% under AM1.5g illumination.
Editor: Melville: American Institute of Physics
Idioma: Inglês

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Development of MOVPE grown GaSb-on-GaAs interfacial misfit solar cells

Kessler-Lewis, Emily S. ; Polly, Stephen J. ; Nelson, George T. ; Slocum, Michael A. ; Pokharel, Nikhil ; Ahrenkiel, Phil ; Hubbard, Seth M.

Melville: American Institute of Physics

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