GREY:NTCXF - Post by User
Comment by
ck123on Feb 05, 2011 7:57pm
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Post# 18082590
RE: RE: RE: RE: RE: ARTICLE's Alta Devices
RE: RE: RE: RE: RE: ARTICLE's Alta Devices
The venture capitalists that you have named have their funds supporting lots of research level enterprises in various technology sectors. GE R&D in alternative energies is probably over $1 billion/year and they evaluate several different options in the solar realm - thin film to silicon to nanowires... so they bet on a lot of horses. Why? They all can't possibly be winners can they? Some may hit but most will flop.
Kleiner Perkins provided venture funds to Vanguard (the roll to roll outfit that Natcore bought), in addition to Lockheed Martin, Chiasm technologies and the air force grants.
Questioning your investment based on every sensationalistic news release won't get you far. Review Naterey's post regarding the abundance of materials used in the production of compound semiconducters (Alta Devices). Read about arsenic and its carcinogenic nature. The 26% efficient gallium cell was first reported in the 1980's. They have been trying to work out a way to bring down the costs and Eli Y. (fellow Canadian) has been researching this technique for a long time. They re-use the substrate on which they grow the films. About 15 years ago, the problem was that the film would crack when they removed the substrate and the current would be lost. I am not sure if they have solved this problem but still it may be a problem during a scale up for manufacturing. Even if they can produce a 26% efficient cell at
.50/watt and countries accept the presence of arsenic and risk their water supply they won't be able to overtake the industry as there isn't enough raw material readily available....
We will still have to have alternatives for solar.... so in 5 years... we might have a silicon based tandem cell... alongside Alta devices compound semiconducters.
"A silicon tandem cellwill allow increased efficiency with the benefit of reduced costs, theability of mass production, and the use of a readily available compound -silicon.