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SUMMARY:Gallium Nitride LEDs: How can they save energy\, purify water\, im
 prove our health (and be made here in the UK) - Prof. Sir Colin Humphreys\
 , Director of Research\, Dept. Materials Science & Metallurgy\, University
  of Cambridge
DTSTART:20150615T183000Z
DTEND:20150615T200000Z
UID:TALK55543@talks.cam.ac.uk
CONTACT:Dr Nigel Bennee
DESCRIPTION:Gallium nitride (GaN) is poised to save more energy and CO2 em
 issions than solar\, wind power and biomass together. \nInGaN/GaN quantum 
 well LEDs for lighting have the potential to save 10-15% of total electric
 ity usage. The main problem with obtaining widespread use in our homes and
  offices is cost. \nThis talk will describe how growing GaN LEDs on large 
 area Si substrates can substantially reduce the cost\, and the problems in
 volved. \nGaN not only has low power consumption for lighting\, it also ha
 s for electronics. \nReplacing Si power electronics by GaN would save anot
 her 10% of electricity. \nSo GaN-based devices could save 20-25% of all th
 e electricity we use and 20-25% of CO2 emissions. \nAlGaN/GaN quantum well
  deep-UV LEDs have the potential to purify water in the developing world (
 and the developed world) saving millions of lives. \n\nFinally\, dynamic c
 olour LED lighting can be optimised for our health\, improving our product
 ivity at work\, in school classrooms\, etc. \n\nOur research on low-cost G
 aN LEDs is being exploited by Plessey who are now manufacturing millions o
 f these LEDs in the UK.\n
LOCATION:Wolfson Lecture Theatre\, Churchill College\, Storey's Way\, Camb
 ridge
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