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    • 1. 发明专利
    • Photocathode, electron tube, and photomultiplier tube
    • 光电管,电子管和光电管
    • JP2010257962A
    • 2010-11-11
    • JP2010085209
    • 2010-04-01
    • Hamamatsu Photonics Kk浜松ホトニクス株式会社
    • YAMASHITA SHINICHIWATANABE HIROYUKIKOMIYAMA HIROSHI
    • H01J40/06H01J1/34H01J43/04
    • H01J1/34H01J31/50H01J31/506H01J40/06
    • PROBLEM TO BE SOLVED: To provide: a photocathode capable of improving effectual quantum efficiency; an electron tube having the photocathode; and a photomultiplier tube. SOLUTION: In the photocathodes 1A, 1B, a base layer 200 consisting of a crystalline material containing La 2 O 3 is installed between support substrates 100A, 100B and a photoelectron emitting layer 300, and is in contact with the photoelectron emitting layer 300. Thus, for example, at the time of heat treatment in a manufacturing step of the photocathodes 1A, 1B, diffusion of alkali metal contained in the photoelectron emitting layer 300 to the support substrates 100A, 100B side is suppressed. Furthermore, this base layer 200 is presumed to be functioning to reverse the advancing direction of photoelectrons going to the support substrates 100A, 100B side out of the photoelectrons e - generated in the photoelectron emitting layer 300 to the opposite side. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供:能够提高有效量子效率的光电阴极; 具有光电阴极的电子管; 和光电倍增管。 解决方案:在光电阴极1A,1B中,由支撑基板100A,100B和支撑基板100A,100B之间安装由含有La SBB的结晶材料构成的基底层200 光电子发射层300,并且与光电子发射层300接触。因此,例如,在光电阴极1A,1B的制造步骤中的热处理时,包含在光电子发射层300中的碱金属的扩散为 支撑基板100A,100B侧被抑制。 此外,该基底层200被推定为使从光电子发射层300中产生的光电子e - 中的支持基板100A,100B侧的光电子的前进方向反转到相反的方向 侧。 版权所有(C)2011,JPO&INPIT