Yes shrinkage is a problem for many at Cambridge University
And sometimes it’s so quick it’s un-satisfying…
That is what happens to a led crystal (Gallium) nitride when you grow it at 1000°C on silicone.
Because the silicone shrinks too quickly after being heated it has not been used to grow led crystal like many other electrical equipment Because the led merely cracked and was not useable but now a man from Cambridge University’s centre for gallium nitride has stepped in with a solution. Now layers of aluminium gallium nitride are thrown into the design and now well in a nut shell it works. We have been told we can expect to see the results of this advance in 5 years.
Don’t hold your breath.
100,000 hours of light is over ten times longer than the energy saving bulbs we currently have screwed in.
Now a 15” thin slice of silicone will come to around 15£ but only that can grow up to
150.000 led crystals that will be a lot of cheep light for every one.
Light may not be cool or very interesting, however I believe that a small advance such as this is still a marvel in its own right.
sources: metro news paper
http://www.newscientist.com/article/dn16496-cheap-superefficient-led-lights-on-the-horizon.html
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