8dB snr increase?

In article , Ilya Zakharevich says...

Do not think so. Front-illuminated sensor have the apex QE (in their
spectral-response curve) closer to 45% (it is the Bayer filter which
reduces the QE 3x, to the current value of about 15%; but Bayer filter
remain on most of these new designes). I should not expect more than
90% back-illuminated performance from a mass-produced first-generation
chip (of course, in 3 years it may become much better than
scientific-grade equipment - due to major R&D money flow).

I would have to dig it out - I remember reading in research papers by
IMEC a few years ago that front-illuminated sensors a limited to about
20-30% QE while back-illuminated ones almost reach 100%.
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Alfred Molon
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