Quote:
Originally Posted by Shiraz
Interesting link, but sorry to be a wet blanket - its only 1000x better than previous graphene detectors.
Modern affordable cmos/ccd detectors are now so efficient that they are detecting 7-8 out of every 10 photons that fall on them. That is almost as good as it can ever get (which is 100% detection), so don't expect huge breakthroughs in visible band detection capability with any new devices - that is now physically impossible. However, if the graphene technology has stable gain, it may be effective in reducing the read noise, the last area where affordable cooled visible band detector technology can be improved significantly. In that case the technology would be competing with at least three other low read noise technologies, although none of those is low cost at present.
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It sounds interesting but there are other characteristics that it needs to have. One is low noise. Perhaps it is 10X more sensitive to heat as well making it very noisy.
Greg.