Metamorphic and lattice-matched solar cells under concentration

Richard King, D. C. Law, K. M. Edmondson, C. M. Fetzer, R. A. Sherif, G. S. Kinsey, D. D. Krut, H. L. Cotai, N. H. Karam

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Citations (Scopus)

Abstract

Metamorphic III-V semiconductor materials offer access to bandgaps that span key portions of the solar spectrum, enabling new bandgap combinations in multijunction solar cells, and increasing both theoretical and practical efficiency limits for terrestrial concentrator cells. Experimental results are given for the quantum efficiency of metamorphic GaInAs solar cells with bandgap from 1.1 to 1.4 eV, and for metamorphic GaInP with both ordered and disordered group-III sublattices. Variable intensity Jsc vs. Voc measurements are used to compare recombination components due to n = 1 and n = 2 mechanisms in metamorphic and lattice-matched GaInAs, GaInP, and 3-junction solar cells. A record efficiency metamorphic GaInP/ GaInAs/ Ge 3-junction solar cell has been produced with 38.8% efficiency independently confirmed (241 suns, AM1.5D, low-AOD, 25°C), essentially equaling the performance of a lattice-matched 3-junction cell with 39.0% efficiency, the highest efficiency yet demonstrated and verified for a solar photovoltaic conversion device. With the combination of high-quality metamorphic materials that are increasingly less controlled by recombination at dislocations, and the higher efficiency limits afforded by freedom of lattice constant selection, practical terrestrial concentrator cell efficiencies well over 40% are expected in the near future.

Original languageEnglish (US)
Title of host publicationConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
Pages760-763
Number of pages4
Volume1
DOIs
StatePublished - 2007
Externally publishedYes
Event2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 - Waikoloa, HI, United States
Duration: May 7 2006May 12 2006

Other

Other2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
CountryUnited States
CityWaikoloa, HI
Period5/7/065/12/06

Fingerprint

Crystal lattices
Solar cells
Energy gap
Quantum efficiency
Lattice constants
Semiconductor materials
III-V semiconductors
Multi-junction solar cells

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

King, R., Law, D. C., Edmondson, K. M., Fetzer, C. M., Sherif, R. A., Kinsey, G. S., ... Karam, N. H. (2007). Metamorphic and lattice-matched solar cells under concentration. In Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 (Vol. 1, pp. 760-763). [4059740] https://doi.org/10.1109/WCPEC.2006.279567

Metamorphic and lattice-matched solar cells under concentration. / King, Richard; Law, D. C.; Edmondson, K. M.; Fetzer, C. M.; Sherif, R. A.; Kinsey, G. S.; Krut, D. D.; Cotai, H. L.; Karam, N. H.

Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4. Vol. 1 2007. p. 760-763 4059740.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

King, R, Law, DC, Edmondson, KM, Fetzer, CM, Sherif, RA, Kinsey, GS, Krut, DD, Cotai, HL & Karam, NH 2007, Metamorphic and lattice-matched solar cells under concentration. in Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4. vol. 1, 4059740, pp. 760-763, 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4, Waikoloa, HI, United States, 5/7/06. https://doi.org/10.1109/WCPEC.2006.279567
King R, Law DC, Edmondson KM, Fetzer CM, Sherif RA, Kinsey GS et al. Metamorphic and lattice-matched solar cells under concentration. In Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4. Vol. 1. 2007. p. 760-763. 4059740 https://doi.org/10.1109/WCPEC.2006.279567
King, Richard ; Law, D. C. ; Edmondson, K. M. ; Fetzer, C. M. ; Sherif, R. A. ; Kinsey, G. S. ; Krut, D. D. ; Cotai, H. L. ; Karam, N. H. / Metamorphic and lattice-matched solar cells under concentration. Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4. Vol. 1 2007. pp. 760-763
@inproceedings{44be3cdfddcd41efa904b9a0df3fbb0a,
title = "Metamorphic and lattice-matched solar cells under concentration",
abstract = "Metamorphic III-V semiconductor materials offer access to bandgaps that span key portions of the solar spectrum, enabling new bandgap combinations in multijunction solar cells, and increasing both theoretical and practical efficiency limits for terrestrial concentrator cells. Experimental results are given for the quantum efficiency of metamorphic GaInAs solar cells with bandgap from 1.1 to 1.4 eV, and for metamorphic GaInP with both ordered and disordered group-III sublattices. Variable intensity Jsc vs. Voc measurements are used to compare recombination components due to n = 1 and n = 2 mechanisms in metamorphic and lattice-matched GaInAs, GaInP, and 3-junction solar cells. A record efficiency metamorphic GaInP/ GaInAs/ Ge 3-junction solar cell has been produced with 38.8{\%} efficiency independently confirmed (241 suns, AM1.5D, low-AOD, 25°C), essentially equaling the performance of a lattice-matched 3-junction cell with 39.0{\%} efficiency, the highest efficiency yet demonstrated and verified for a solar photovoltaic conversion device. With the combination of high-quality metamorphic materials that are increasingly less controlled by recombination at dislocations, and the higher efficiency limits afforded by freedom of lattice constant selection, practical terrestrial concentrator cell efficiencies well over 40{\%} are expected in the near future.",
author = "Richard King and Law, {D. C.} and Edmondson, {K. M.} and Fetzer, {C. M.} and Sherif, {R. A.} and Kinsey, {G. S.} and Krut, {D. D.} and Cotai, {H. L.} and Karam, {N. H.}",
year = "2007",
doi = "10.1109/WCPEC.2006.279567",
language = "English (US)",
isbn = "1424400163",
volume = "1",
pages = "760--763",
booktitle = "Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4",

}

TY - GEN

T1 - Metamorphic and lattice-matched solar cells under concentration

AU - King, Richard

AU - Law, D. C.

AU - Edmondson, K. M.

AU - Fetzer, C. M.

AU - Sherif, R. A.

AU - Kinsey, G. S.

AU - Krut, D. D.

AU - Cotai, H. L.

AU - Karam, N. H.

PY - 2007

Y1 - 2007

N2 - Metamorphic III-V semiconductor materials offer access to bandgaps that span key portions of the solar spectrum, enabling new bandgap combinations in multijunction solar cells, and increasing both theoretical and practical efficiency limits for terrestrial concentrator cells. Experimental results are given for the quantum efficiency of metamorphic GaInAs solar cells with bandgap from 1.1 to 1.4 eV, and for metamorphic GaInP with both ordered and disordered group-III sublattices. Variable intensity Jsc vs. Voc measurements are used to compare recombination components due to n = 1 and n = 2 mechanisms in metamorphic and lattice-matched GaInAs, GaInP, and 3-junction solar cells. A record efficiency metamorphic GaInP/ GaInAs/ Ge 3-junction solar cell has been produced with 38.8% efficiency independently confirmed (241 suns, AM1.5D, low-AOD, 25°C), essentially equaling the performance of a lattice-matched 3-junction cell with 39.0% efficiency, the highest efficiency yet demonstrated and verified for a solar photovoltaic conversion device. With the combination of high-quality metamorphic materials that are increasingly less controlled by recombination at dislocations, and the higher efficiency limits afforded by freedom of lattice constant selection, practical terrestrial concentrator cell efficiencies well over 40% are expected in the near future.

AB - Metamorphic III-V semiconductor materials offer access to bandgaps that span key portions of the solar spectrum, enabling new bandgap combinations in multijunction solar cells, and increasing both theoretical and practical efficiency limits for terrestrial concentrator cells. Experimental results are given for the quantum efficiency of metamorphic GaInAs solar cells with bandgap from 1.1 to 1.4 eV, and for metamorphic GaInP with both ordered and disordered group-III sublattices. Variable intensity Jsc vs. Voc measurements are used to compare recombination components due to n = 1 and n = 2 mechanisms in metamorphic and lattice-matched GaInAs, GaInP, and 3-junction solar cells. A record efficiency metamorphic GaInP/ GaInAs/ Ge 3-junction solar cell has been produced with 38.8% efficiency independently confirmed (241 suns, AM1.5D, low-AOD, 25°C), essentially equaling the performance of a lattice-matched 3-junction cell with 39.0% efficiency, the highest efficiency yet demonstrated and verified for a solar photovoltaic conversion device. With the combination of high-quality metamorphic materials that are increasingly less controlled by recombination at dislocations, and the higher efficiency limits afforded by freedom of lattice constant selection, practical terrestrial concentrator cell efficiencies well over 40% are expected in the near future.

UR - http://www.scopus.com/inward/record.url?scp=41749097846&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41749097846&partnerID=8YFLogxK

U2 - 10.1109/WCPEC.2006.279567

DO - 10.1109/WCPEC.2006.279567

M3 - Conference contribution

SN - 1424400163

SN - 9781424400164

VL - 1

SP - 760

EP - 763

BT - Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4

ER -