Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1984-10-31
1986-08-12
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2504581, H01J 314
Patent
active
046058494
ABSTRACT:
The blue light response of solid state photosensitive devices such as silicon based charge-coupled devices (CCDs), charged-injection devices, photovoltaic devices and the like is enhanced by applying to the surface thereof a thin layer which includes a first, or donor, dye which absorbs efficiently in the blue region of the spectrum and a second, or acceptor, dye which absorbs efficiently in the green region of the spectrum, there being substantial overlap between the emission spectrum of the donor and the absorption spectrum of the acceptor. The relative concentrations of the dyes are controlled such that the donor dye transfers energy nonradiatively to the acceptor dye which is caused to fluoresce thereby emitting light in the region where the device has substantial photoresponse.
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Ultraviolet Downconverting Phosphor For Use With Silicon CCD Imagers, Blouke et al, Applied Optics, vol. 19, No. 19/ Oct. 1, 1980.
Fischer Alan B.
Inbar Shai
Kliem Peter O.
Gatto James
Maccarone Gaetano D.
Nelms David C.
Polaroid Corporation
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