透射式负电子亲和势Ⅲ-Ⅴ族化合物光阴极工作波段的设计问题
PROBLEMS IN DESIGNING THE WAVELENGTH RANGE OF THE TRANSMISSION NEA III V COMPOUND PHOTOCATHODES
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摘要: 正 (一)前言 在常用的光阴极(Ag-O-Cs,Sb-Cs,Sb-K-Na-Cs)中,每一种光阴极均有其光谱响应曲线(工作波段)。各种光阴极的光谱响应曲线的形状各异,阈(长波截止波长)也各异。但短(短波起始波长)则取决于窗口玻璃材料对短波波长的透过率。总之,常用光阴极的光谱响应曲线随光阴极的材料而异,是无法预先设计的
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Abstract: Transmission NBA Ⅲ-Ⅴ compound photocathodes may be designed in some cases. This article gives the design principles, design requirements, design procedure and compositional structure, and then gives an example of designing transmission InxGa(1-x)As photocathode in the 0.4-1.1m wavelength. Finally, some problems which have to be resolved for the transmission Gay In(1-y)AsxP(1-x), photocathode in the 0.4-1.7m wavelength are pointed out. -
C.J. Nuese, J. Electronic Materials 6(1977), 253.[4]G.A. Antypas, J. Edgecumbe, Appl. Phys. Let, 26(1975), 371. -
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