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.
EDIT: did some more looking and it seems with with these "major breakthrough" press releases, the devil is always in the detail. From a more measured source:
"Graphene also shows great promise for photonics applications because it has an ideal "internal quantum efficiency" – almost every photon absorbed by the material generates an electron–hole pair that could, in principle, be converted into electric current. Thanks to its "Dirac" electrons, it can also absorb light of any colour.
However, all is not perfect because graphene's "external quantum efficiency" is low – it absorbs less than 3% of the light falling on it. "
ie, it is currently useless as a visible band photodetector.
reckon you should buy a modern CMOS DSLR body - not much point in waiting for graphene technology.
Ref:
http://physicsworld.com/cws/article/...tector-a-boost