Electrical properties and structural defects in lattice mismatched InGaAs solar cells

T. Sasaki, K. Arafune, Haeseok Lee, N. J. Ekins-Daukes, S. Tanaka, W. Metzger, M. J. Romero, K. Jones, M. Al-Jassim, Y. Ohshita, M. Yamaguchi

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

1 Citation (Scopus)

Abstract

Higher conversion efficiency has been predicted theoretically for InGaP/In0.16Ga0.84As/Ge lattice-mismatched triple junction solar cells owing to widening of the effective range of the solar spectrum than the conventional lattice-matched solar cells. The most serious problem in lattice-mismatched system is the large lattice mismatch (∼1%) between In0.16Ga0.84As and Ge cells. The effect of a thermal cycle annealing (TCA) process which is expected to reduce the defect density in this system has been discussed from electrical and structural viewpoints. The minority carrier lifetime in In0.16Ga0.84As emitter layers were improved after TCA treatment from TR-PL measurement. EBIC measurements showed a reduction of the structural defect such as misfit dislocations due to the TCA process in In0.16Ga0.84As base layers. The misfit components observed in the base layers may have some influence through the emitter layers.

Original languageEnglish
Title of host publicationConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
Pages795-798
Number of pages4
DOIs
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 - Waikoloa, HI, United States
Duration: 2006 May 72006 May 12

Publication series

NameConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
Volume1

Other

Other2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
CountryUnited States
CityWaikoloa, HI
Period06/5/706/5/12

Fingerprint

Solar cells
Electric properties
Annealing
Defects
Lattice mismatch
Carrier lifetime
Defect density
Dislocations (crystals)
Crystal lattices
Conversion efficiency
Hot Temperature

ASJC Scopus subject areas

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

Cite this

Sasaki, T., Arafune, K., Lee, H., Ekins-Daukes, N. J., Tanaka, S., Metzger, W., ... Yamaguchi, M. (2007). Electrical properties and structural defects in lattice mismatched InGaAs solar cells. In Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 (pp. 795-798). [4059749] (Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4; Vol. 1). https://doi.org/10.1109/WCPEC.2006.279576

Electrical properties and structural defects in lattice mismatched InGaAs solar cells. / Sasaki, T.; Arafune, K.; Lee, Haeseok; Ekins-Daukes, N. J.; Tanaka, S.; Metzger, W.; Romero, M. J.; Jones, K.; Al-Jassim, M.; Ohshita, Y.; Yamaguchi, M.

Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4. 2007. p. 795-798 4059749 (Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4; Vol. 1).

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

Sasaki, T, Arafune, K, Lee, H, Ekins-Daukes, NJ, Tanaka, S, Metzger, W, Romero, MJ, Jones, K, Al-Jassim, M, Ohshita, Y & Yamaguchi, M 2007, Electrical properties and structural defects in lattice mismatched InGaAs solar cells. in Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4., 4059749, Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4, vol. 1, pp. 795-798, 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4, Waikoloa, HI, United States, 06/5/7. https://doi.org/10.1109/WCPEC.2006.279576
Sasaki T, Arafune K, Lee H, Ekins-Daukes NJ, Tanaka S, Metzger W et al. Electrical properties and structural defects in lattice mismatched InGaAs solar cells. In Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4. 2007. p. 795-798. 4059749. (Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4). https://doi.org/10.1109/WCPEC.2006.279576
Sasaki, T. ; Arafune, K. ; Lee, Haeseok ; Ekins-Daukes, N. J. ; Tanaka, S. ; Metzger, W. ; Romero, M. J. ; Jones, K. ; Al-Jassim, M. ; Ohshita, Y. ; Yamaguchi, M. / Electrical properties and structural defects in lattice mismatched InGaAs solar cells. Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4. 2007. pp. 795-798 (Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4).
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AU - Metzger, W.

AU - Romero, M. J.

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