Recent progress of Spectrolab high-efficiency space solar cells

Daniel C. Law, X. Q. Liu, J. C. Boisvert, E. M. Redher, C. M. Fetzer, S. Mesropian, Richard King, K. M. Edmondson, B. Jun, R. L. Woo, D. D. Krut, P. T. Chiu, D. M. Bhusari, S. K. Sharma, N. H. Karam

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

14 Citations (Scopus)

Abstract

High-efficiency Inverted Metamorphic (IMM) multi-junction solar cells are being developed at Spectrolab for use in space and near-space applications. Recently, large-area (26-cm2) IMM3J cells achieved a 1-sun, AM0 conversion efficiency of 32% with an open-circuit-voltage of 3.04 V, a short-circuit current-density of 16.7 mA/cm2, and a fill factor of 0.84. In addition, IMM4J cells (1-cm2) reached a 1-sun, AM0 conversion efficiency of 33%. The 4-junction cell achieved an open-circuit-voltage of 3.42 V, a short-circuit current-density of 15.8 mA/cm2, and a fill factor of 0.82. Both the inverted metamorphic 3J and 4J cells reveal excellent component subcell quantum efficiency. Improvements in crystal growth, as well as more optimal subcell current density balance, will further raise the 1-sun, AM0 efficiency of the 3J and the 4J IMM cells to 33% and 35% respectively. The latest status of the 72-cm2 XTJ (based on 150-mm Ge substrate) Supercells will also be discussed.

Original languageEnglish (US)
Title of host publicationConference Record of the IEEE Photovoltaic Specialists Conference
Pages3146-3149
Number of pages4
DOIs
StatePublished - 2012
Externally publishedYes
Event38th IEEE Photovoltaic Specialists Conference, PVSC 2012 - Austin, TX, United States
Duration: Jun 3 2012Jun 8 2012

Other

Other38th IEEE Photovoltaic Specialists Conference, PVSC 2012
CountryUnited States
CityAustin, TX
Period6/3/126/8/12

Fingerprint

Sun
Solar cells
Current density
Open circuit voltage
Short circuit currents
Conversion efficiency
Space applications
Quantum efficiency
Crystal growth
Substrates
Multi-junction solar cells

Keywords

  • Ge-based lattice-matched solar cells
  • III-V multijunction
  • inverted metamorphic solar cells
  • space solar cells

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

Cite this

Law, D. C., Liu, X. Q., Boisvert, J. C., Redher, E. M., Fetzer, C. M., Mesropian, S., ... Karam, N. H. (2012). Recent progress of Spectrolab high-efficiency space solar cells. In Conference Record of the IEEE Photovoltaic Specialists Conference (pp. 3146-3149). [6318246] https://doi.org/10.1109/PVSC.2012.6318246

Recent progress of Spectrolab high-efficiency space solar cells. / Law, Daniel C.; Liu, X. Q.; Boisvert, J. C.; Redher, E. M.; Fetzer, C. M.; Mesropian, S.; King, Richard; Edmondson, K. M.; Jun, B.; Woo, R. L.; Krut, D. D.; Chiu, P. T.; Bhusari, D. M.; Sharma, S. K.; Karam, N. H.

Conference Record of the IEEE Photovoltaic Specialists Conference. 2012. p. 3146-3149 6318246.

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

Law, DC, Liu, XQ, Boisvert, JC, Redher, EM, Fetzer, CM, Mesropian, S, King, R, Edmondson, KM, Jun, B, Woo, RL, Krut, DD, Chiu, PT, Bhusari, DM, Sharma, SK & Karam, NH 2012, Recent progress of Spectrolab high-efficiency space solar cells. in Conference Record of the IEEE Photovoltaic Specialists Conference., 6318246, pp. 3146-3149, 38th IEEE Photovoltaic Specialists Conference, PVSC 2012, Austin, TX, United States, 6/3/12. https://doi.org/10.1109/PVSC.2012.6318246
Law DC, Liu XQ, Boisvert JC, Redher EM, Fetzer CM, Mesropian S et al. Recent progress of Spectrolab high-efficiency space solar cells. In Conference Record of the IEEE Photovoltaic Specialists Conference. 2012. p. 3146-3149. 6318246 https://doi.org/10.1109/PVSC.2012.6318246
Law, Daniel C. ; Liu, X. Q. ; Boisvert, J. C. ; Redher, E. M. ; Fetzer, C. M. ; Mesropian, S. ; King, Richard ; Edmondson, K. M. ; Jun, B. ; Woo, R. L. ; Krut, D. D. ; Chiu, P. T. ; Bhusari, D. M. ; Sharma, S. K. ; Karam, N. H. / Recent progress of Spectrolab high-efficiency space solar cells. Conference Record of the IEEE Photovoltaic Specialists Conference. 2012. pp. 3146-3149
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