Electric lamp and discharge devices – Photosensitive – Having phosphor screen
Patent
1995-07-27
1997-10-21
O'Shea, Sandra L.
Electric lamp and discharge devices
Photosensitive
Having phosphor screen
313542, 313532, 250207, H01J 134
Patent
active
056800070
ABSTRACT:
A photoelectric emission surface which is excellent in stability and reproducibility of photoelectric conversion characteristics and has a structure capable of obtaining a high photosensitivity is provided. A predetermined voltage is applied between an upper surface electrode and a lower surface electrode by a battery. Upon application of this voltage, a p-n junction formed between a contact layer and an electron emission layer is reversely biased. A depletion layer extends from the p-n junction into the photoelectric emission surface, and an electric field is formed in the electron emission layer and a light absorbing layer in a direction for accelerating photoelectrons. When incident light is absorbed in the light absorbing layer to excite photoelectrons, the photoelectrons are accelerated by the electric field toward the emission surface. The photoelectrons obtain an energy upon this electric field acceleration, and are transitioned, in the electron emission layer, to a conduction band at a higher energy level, and emitted into a vacuum.
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Hirohata Toru
Niigaki Minoru
Suzuki Tomoko
Yamada Masami
Hamamatsu Photonics K.K.
O'Shea Sandra L.
Patidar Jay M.
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