Codoped direct-gap semiconductor scintillators
    1.
    发明授权
    Codoped direct-gap semiconductor scintillators 失效
    编码直接间隙半导体闪烁体

    公开(公告)号:US07404913B2

    公开(公告)日:2008-07-29

    申请号:US11382883

    申请日:2006-05-11

    IPC分类号: C09K11/56 C09K11/54

    CPC分类号: C09K11/565

    摘要: Fast, bright inorganic scintillators at room temperature are based on radiative electron-hole recombination in direct-gap semiconductors, e.g. CdS and ZnO. The direct-gap semiconductor is codoped with two different impurity atoms to convert the semiconductor to a fast, high luminosity scintillator. The codopant scheme is based on dopant band to dopant trap recombination. One dopant provides a significant concentration of carriers of one type (electrons or holes) and the other dopant traps carriers of the other type. Examples include CdS:In,Te; CdS:In,Ag; CdS:In,Na; ZnO:Ga,P; ZnO:Ga,N; ZnO:Ga,S; and GaN:Ge,Mg.

    摘要翻译: 在室温下快速,明亮的无机闪烁体基于直接间隙半导体中的辐射电子 - 空穴复合,例如。 CdS和ZnO。 直接间隙半导体与两个不同的杂质原子共同掺杂,将半导体转换成快速,高亮度的闪烁体。 共掺杂方案基于掺杂剂掺杂剂掺杂剂阱掺杂剂复合。 一种掺杂剂提供了一种类型(电子或空穴)和另一种类型的其它掺杂剂陷阱载体的载流子的显着浓度。 实例包括CdS:In,Te; CdS:In,Ag; CdS:In,Na; ZnO:Ga,P; ZnO:Ga,N; ZnO:Ga,S; 和GaN:Ge,Mg。