Project supported by the National Natural Science Foundation of China (Grant Nos. 60678043 and 60801036)
Early research has shown that the varied doping structures of the active layer of GaAs photocathodes have been proven to have a higher quantum efficiency than uniform doping structures. On the basis of our early resea...
Project supported by the National Natural Science Foundation of China (Grant Nos 60678043 and 60801036)
The gradient-doping structure is first applied to prepare the transmission-mode GaAs photocathode and the integral sensitivity of the sealed image tube achieves 1420μA/lm. This paper studies the inner carrier concent...