第三代微光夜视仪中的薄片管是采用负电子亲和势光电阴极制造的。这种光电阴极多年来一直是国外夜视领域的研制重点。它的研制成功大大推动了夜视技术的发展。本文主要介绍玻璃密封的透射式负电子亲和势GaAs光电阴极的制造方法。负电子亲和势GaAs光电阴极则是一种新的光电阴极,其灵敏度之高远远超过了多碱光电阴极。为了获得这种高性能的负电子亲和势GaAs透射式光电阴极;要求在透明衬底上具有均勻的无疵病的P~+GaAs薄层,其少数载流子的扩散长度长 The third generation of low-light night vision in the thin tube is the use of negative electron affinity photocathode manufacturing. This photocathode has been the focus of research in the field of night vision for many years. Its successful development greatly promoted the development of night vision technology. This article mainly introduces the glass sealed transmissive negative electron affinity GaAs photocathode manufacturing method. Negative electron affinity GaAs photocathode is a new kind of photocathode whose sensitivity is much higher than that of polybasic photocathode. In order to obtain such high-performance negative-electron affinity GaAs transmission photocathode, it is required to have a uniform flawless thin film of P ~ + GaAs on a transparent substrate with a minority carrier diffusion length