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Title:
PHOTOCATHODE
Document Type and Number:
Japanese Patent JP2004165054
Kind Code:
A
Abstract:

To provide a photocathode capable of improving S/N ratio by restraining lowering of a spectral sensitivity when temperature is lowered.

A light-absorbing layer 12 is formed on a substrate 11, and an electron-emitting layer 13 is formed on the light-absorbing layer 12. A stripe-shaped contact layer 14 is formed on the electron-emitting layer 13, and a surface electrode 15 made of metal is formed on the frontal surface of the contact layer 14. A distance between protruded strings in the contact layer 14 is adjusted so that the distance L between a point farthest from the contact layer 14 on an exposed surface of the electron-emitting layer 13 and the contact layer 13 be 0.1 μm or more and 1 μm or less.


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Inventors:
HIROHATA TORU
ARAGAKI MINORU
MOCHIZUKI TOMOKO
YAMADA MASAMI
Application Number:
JP2002331142A
Publication Date:
June 10, 2004
Filing Date:
November 14, 2002
Export Citation:
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Assignee:
HAMAMATSU PHOTONICS KK
International Classes:
H01J1/34; H01J40/06; H01J43/08; H01L29/06; (IPC1-7): H01J1/34; H01J40/06
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki