High Efficiency Lattice-Matched 4J Space Solar Cells on GaAs

Arto Aho; Marianna Raappana; Riku Isoaho; Timo Aho; Ville Polojärvi; Antti Tukiainen; Elina Anttola; Severi Mäkelä; Jarno Reuna; Hietalahti Arttu; Mircea Guina

doi:10.1109/ESPC.2019.8932092

High Efficiency Lattice-Matched 4J Space Solar Cells on GaAs

Arto Aho, Marianna Raappana, Riku Isoaho, Timo Aho, Ville Polojärvi, Antti Tukiainen, Elina Anttola, Severi Mäkelä, Jarno Reuna, Hietalahti Arttu, Mircea Guina

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

1 Citation (Scopus)

1 Downloads (Pure)

Abstract

A lattice-matched four-junction solar cell on a GaAs substrate, for space applications, is demonstrated. The solar cell incorporates MBE grown GaInP, GaAs, GaInNAsSb and GaInNAsSb junctions with band-gaps of 1.9 eV, 1.4 eV, 1.2 eV and 0.9 eV, respectively. For AM0 illumination, the cell exhibited a maximum efficiency of 27%. For this performance, a high collection efficiency for the bottom cell is required. The high efficiency and current generation for the four-junction solar cell is primarily enabled by achieving a very low background doping level (~5×1014 cm-3) and high charge carrier lifetimes (2-4 ns) for the GaInNAsSb bottom junction. Achieving an efficiency of 33% is deemed possible by further reduction of reflection, shadowing and transmission losses.

Original language	English
Title of host publication	2019 European Space Power Conference (ESPC)
Publisher	IEEE
ISBN (Electronic)	978-1-7281-2126-0
ISBN (Print)	978-1-7281-2127-7
DOIs	https://doi.org/10.1109/ESPC.2019.8932092
Publication status	Published - Oct 2019
Publication type	A4 Article in conference proceedings
Event	European Space Power Conference - Duration: 1 Jan 2000 → …

Conference

Conference	European Space Power Conference
Period	1/01/00 → …

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Publication forum level 1

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10.1109/ESPC.2019.8932092

High Efficiency Lattice-Matched 4J Space Solar Cells on GaAs
Aho, A. (Speaker), Raappana, M. (Contributor), Isoaho, R. (Contributor), Aho, T. (Contributor), Polojärvi, V. (Contributor), Tukiainen, A. (Contributor), Anttola, E. (Contributor), Mäkelä, S. (Contributor), Reuna, J. V. T. (Contributor), Arttu, H. (Contributor) & Guina, M. (Contributor)
2019
Activity: Talk or presentation › Conference presentation

Cite this

@inproceedings{95f981f457e34a4489fd49647c3e1850,

title = "High Efficiency Lattice-Matched 4J Space Solar Cells on GaAs",

abstract = "A lattice-matched four-junction solar cell on a GaAs substrate, for space applications, is demonstrated. The solar cell incorporates MBE grown GaInP, GaAs, GaInNAsSb and GaInNAsSb junctions with band-gaps of 1.9 eV, 1.4 eV, 1.2 eV and 0.9 eV, respectively. For AM0 illumination, the cell exhibited a maximum efficiency of 27%. For this performance, a high collection efficiency for the bottom cell is required. The high efficiency and current generation for the four-junction solar cell is primarily enabled by achieving a very low background doping level (~5×1014 cm-3) and high charge carrier lifetimes (2-4 ns) for the GaInNAsSb bottom junction. Achieving an efficiency of 33% is deemed possible by further reduction of reflection, shadowing and transmission losses.",

author = "Arto Aho and Marianna Raappana and Riku Isoaho and Timo Aho and Ville Poloj{\"a}rvi and Antti Tukiainen and Elina Anttola and Severi M{\"a}kel{\"a} and Jarno Reuna and Hietalahti Arttu and Mircea Guina",

note = "INT=PHYS, {"}Anttola, Elina{"} INT=PHYS, {"}M{\"a}kel{\"a}, Severi{"} INT=PHYS, {"}Hietalahti, Arttu{"}; European Space Power Conference ; Conference date: 01-01-2000",

year = "2019",

month = oct,

doi = "10.1109/ESPC.2019.8932092",

language = "English",

isbn = "978-1-7281-2127-7",

booktitle = "2019 European Space Power Conference (ESPC)",

publisher = "IEEE",

address = "United States",

}

TY - GEN

T1 - High Efficiency Lattice-Matched 4J Space Solar Cells on GaAs

AU - Aho, Arto

AU - Raappana, Marianna

AU - Isoaho, Riku

AU - Aho, Timo

AU - Polojärvi, Ville

AU - Tukiainen, Antti

AU - Anttola, Elina

AU - Mäkelä, Severi

AU - Reuna, Jarno

AU - Arttu, Hietalahti

AU - Guina, Mircea

N1 - INT=PHYS, "Anttola, Elina" INT=PHYS, "Mäkelä, Severi" INT=PHYS, "Hietalahti, Arttu"

PY - 2019/10

Y1 - 2019/10

N2 - A lattice-matched four-junction solar cell on a GaAs substrate, for space applications, is demonstrated. The solar cell incorporates MBE grown GaInP, GaAs, GaInNAsSb and GaInNAsSb junctions with band-gaps of 1.9 eV, 1.4 eV, 1.2 eV and 0.9 eV, respectively. For AM0 illumination, the cell exhibited a maximum efficiency of 27%. For this performance, a high collection efficiency for the bottom cell is required. The high efficiency and current generation for the four-junction solar cell is primarily enabled by achieving a very low background doping level (~5×1014 cm-3) and high charge carrier lifetimes (2-4 ns) for the GaInNAsSb bottom junction. Achieving an efficiency of 33% is deemed possible by further reduction of reflection, shadowing and transmission losses.

AB - A lattice-matched four-junction solar cell on a GaAs substrate, for space applications, is demonstrated. The solar cell incorporates MBE grown GaInP, GaAs, GaInNAsSb and GaInNAsSb junctions with band-gaps of 1.9 eV, 1.4 eV, 1.2 eV and 0.9 eV, respectively. For AM0 illumination, the cell exhibited a maximum efficiency of 27%. For this performance, a high collection efficiency for the bottom cell is required. The high efficiency and current generation for the four-junction solar cell is primarily enabled by achieving a very low background doping level (~5×1014 cm-3) and high charge carrier lifetimes (2-4 ns) for the GaInNAsSb bottom junction. Achieving an efficiency of 33% is deemed possible by further reduction of reflection, shadowing and transmission losses.

U2 - 10.1109/ESPC.2019.8932092

DO - 10.1109/ESPC.2019.8932092

M3 - Conference contribution

SN - 978-1-7281-2127-7

BT - 2019 European Space Power Conference (ESPC)

PB - IEEE

T2 - European Space Power Conference

Y2 - 1 January 2000

ER -

High Efficiency Lattice-Matched 4J Space Solar Cells on GaAs

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High Efficiency Lattice-Matched 4J Space Solar Cells on GaAs

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