Composite nanophosphor screen for detecting radiation

Details Composite nanophosphor screen for detecting radiation Composite nanophosphor screen for detecting radiation

1997-11-28

1999-09-14

Westin, Edward P.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2504851, 2504861, 250361R, G01T 120

Patent

active

059526653

ABSTRACT:
A composite phosphor screen for converting radiation, such as X-rays, into visible light. The screen includes a planar surface, which can be formed from glass, silicon or metal, which has etched therein a multiplicity of closely spaced nanochannels having diameters of the order of 5 microns or less. Deposited within each of the nanochannels is a multiplicity of nanocrystalline phosphors, having diameters of less than 100 nanometers and preferably less than 10 nanometers, which emit light when acted upon by radiation. The walls of the nanochannels are arranged to reflect the light emitted by the nanophoshors down the nanochannels to suitable light collecting device such as film or an electronic device. This minimizes light scattering and increases light collection efficiency.

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patent: 5334843 (1994-08-01), Zeman
patent: 5446286 (1995-08-01), Bhargava
patent: 5591982 (1997-01-01), Kohda
patent: 5637258 (1997-06-01), Goldburt et al.

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