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SUMMARY:High Efficiency III-V Solar Cells: past\, present and future - Dr 
 Ned J Ekins-Daukes\, Imperial College
DTSTART:20120517T183000Z
DTEND:20120517T200000Z
UID:TALK37834@talks.cam.ac.uk
CONTACT:Dr Geoff Hale
DESCRIPTION:III-V solar cells have a long track record\, starting with the
  Russian Venera missions to Venus in the 1960s\, and are now used for almo
 st all communication satellites. III-V semiconductors can be fabricated to
  produce multi-junction devices that span the solar spectrum\; the current
  world record for solar power conversion (December 2011) is 37.9% for a tr
 iple junction solar cell under one sun illumination. For fundamental therm
 odynamic reasons\, the efficiency of these solar cells rises under increas
 ed concentration\, so the highest efficiency concentrator solar cell (illu
 strated) presently operates at 43.2%. At such efficiencies\, large scale\,
  terrestrial solar power generation using concentrator systems in the dese
 rts becomes feasible. The technological developments underpinning these ac
 hievements will be discussed\, together with an outlook of the present cha
 llenges and likely near term progress.
LOCATION:Department of Materials Science and Metallurgy\, New Museums Site
 \, Pembroke Street\, Cambridge CB2 3QZ
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