Invention Grant
US07045957B2 Polycrystal diamond thin film and photocathode and electron tube using the same
有权
多晶金刚石薄膜和光电阴极和电子管使用相同
- Patent Title: Polycrystal diamond thin film and photocathode and electron tube using the same
- Patent Title (中): 多晶金刚石薄膜和光电阴极和电子管使用相同
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Application No.: US10223378Application Date: 2002-08-20
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Publication No.: US07045957B2Publication Date: 2006-05-16
- Inventor: Minoru Niigaki , Shoichi Uchiyama , Hirofumi Kan
- Applicant: Minoru Niigaki , Shoichi Uchiyama , Hirofumi Kan
- Applicant Address: JP Shizuoka
- Assignee: Hamamatsu Photonics K.K.
- Current Assignee: Hamamatsu Photonics K.K.
- Current Assignee Address: JP Shizuoka
- Agency: Drinker Biddle & Reath LLP
- Priority: JPP2000-046248 20000223
- Main IPC: H01J40/06
- IPC: H01J40/06
Abstract:
In the polycrystal diamond thin film in accordance with the present invention, the average particle size is at least 1.5 μm and, in a Raman spectrum obtained by Raman spectroscopy, a peak intensity near a wave number of 1580 cm−1 has a ratio of 0.2 or less with respect to a peak intensity near a wave number of 1335 cm−1. The photocathode and electron tube in accordance with the present invention comprise the polycrystal diamond thin film as a light-absorbing layer.
Public/Granted literature
- US20030001498A1 Polycrystal diamond thin film and photocathode and electron tube using the same Public/Granted day:2003-01-02
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