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    • 1. 发明公开
    • Photomultiplier
    • 光电倍增管
    • EP0714117A2
    • 1996-05-29
    • EP95308117.1
    • 1995-11-14
    • HAMAMATSU PHOTONICS K.K.
    • Suyama, MotohiroMuramatsu, MasaharuOishi, MakotoIshikawa, YoshitakaYamamoto, Koei
    • H01J43/12H01J43/10H01J1/32
    • H01L31/1075H01J43/04H01J43/12
    • In a photomultiplier of the present invention, a semiconductor device (60) arranged in an envelope (20) to oppose a photocathode (40) is constituted by a semiconductor substrate of a first conductivity type, a carrier multiplication layer of a second conductivity type different from the first conductivity type, which is formed on the semiconductor substrate by epitaxial growth, a breakdown voltage control layer of the second conductivity type, which is formed on the carrier multiplication layer and has a dopant concentration higher than that of the carrier multiplication layer, a first insulating layer formed on the breakdown voltage control layer and said carrier multiplication layer while partially exposing the surface of the breakdown voltage control layer as a receptor for photoelectrons and consisting of a nitride, and an ohmic electrode layer formed on a peripheral surface portion of the receptor of the breakdown voltage control layer. When the dopant concentration distribution in the carrier multiplication layer is uniformly controlled on the basis of epitaxial growth, the uniformity of an avalanche multiplication gain for photoelectrons incident at different positions on the receptor of the semiconductor device is improved, thereby largely increasing the energy resolving power.
    • 在本发明的光电倍增管中,布置在与光电阴极(40)相对的封套(20)中的半导体器件(60)由第一导电类型的半导体衬底,第二导电类型的载流子倍增层 从通过外延生长在半导体衬底上形成的第一导电类型,形成在载流子倍增层上且具有比载流子倍增层高的掺杂浓度的第二导电类型的击穿电压控制层, 第一绝缘层,形成在击穿电压控制层和载流子倍增层上,同时部分地暴露击穿电压控制层的表面作为光电子的受体并且由氮化物构成,欧姆电极层形成在第一绝缘层的外围表面部分上 击穿电压控制层的受体。 当基于外延生长均匀地控制载流子倍增层中的掺杂剂浓度分布时,改善了入射到半导体器件的接收器上的不同位置处的光电子的雪崩倍增增益的均匀性,从而大大增加了能量分辨率 。
    • 3. 发明公开
    • Photomultiplier
    • 光电倍增管
    • EP0714117A3
    • 1998-03-04
    • EP95308117.1
    • 1995-11-14
    • HAMAMATSU PHOTONICS K.K.
    • Suyama, MotohiroMuramatsu, MasaharuOishi, MakotoIshikawa, YoshitakaYamamoto, Koei
    • H01J43/12H01J43/10H01J1/32
    • H01L31/1075H01J43/04H01J43/12
    • In a photomultiplier of the present invention, a semiconductor device (60) arranged in an envelope (20) to oppose a photocathode (40) is constituted by a semiconductor substrate of a first conductivity type, a carrier multiplication layer of a second conductivity type different from the first conductivity type, which is formed on the semiconductor substrate by epitaxial growth, a breakdown voltage control layer of the second conductivity type, which is formed on the carrier multiplication layer and has a dopant concentration higher than that of the carrier multiplication layer, a first insulating layer formed on the breakdown voltage control layer and said carrier multiplication layer while partially exposing the surface of the breakdown voltage control layer as a receptor for photoelectrons and consisting of a nitride, and an ohmic electrode layer formed on a peripheral surface portion of the receptor of the breakdown voltage control layer. When the dopant concentration distribution in the carrier multiplication layer is uniformly controlled on the basis of epitaxial growth, the uniformity of an avalanche multiplication gain for photoelectrons incident at different positions on the receptor of the semiconductor device is improved, thereby largely increasing the energy resolving power.