公开(公告)号：US07592747B1

公开(公告)日：2009-09-22

申请号：US11056633

申请日：2005-02-09

申请人： Robert A. Beach ,  Shouleh Nikzad ,  Robert P. Strittmatter ,  Lloyd Douglas Bell

发明人： Robert A. Beach ,  Shouleh Nikzad ,  Robert P. Strittmatter ,  Lloyd Douglas Bell

IPC分类号： H01J40/06

CPC分类号： H01J40/06 ,  H01J1/34 ,  H01J31/26 ,  H01J31/50

摘要： A photocathode, for generating electrons in response to incident photons in a photodetector, includes a base layer having a first lattice structure and an active layer having a second lattice structure and epitaxially formed on the base layer, the first and second lattice structures being sufficiently different to create a strain in the active layer with a corresponding piezoelectrically induced polarization field in the active layer, the active layer having a band gap energy corresponding to a desired photon energy.

摘要翻译： 用于响应光电检测器中的入射光子产生电子的光电阴极包括具有第一晶格结构的基底层和具有第二晶格结构并且外延形成在基底层上的有源层，第一和第二晶格结构充分不同 在活性层中产生具有对应的压电感应极化场的有源层中的应变，有源层具有对应于所需光子能量的带隙能量。