THE DEVELOPMENT OF a-Si:H IMAGE PICKUP TUBES WITH HIGH PHOTOSENSITIVITY
高灵敏度非晶硅靶摄象管的研制

a-Si:H vidicon targets based on the blocking structure have been deposited and investigated. The target current-voltage characteristics in dark and under illumination are measured. The photosensitivity is 2400 uA/lm. The spectral sensitivity is high over the whole visible range. The peak photoconductive gain is close to 0.8 at around 5800 A wavelength. The signal current increases linearly with light intensity, r is about 0.95. The dark current is about 1-3 nA at operating target voltage. The limiting resolution of 800 TVL for 1 inch tubes and about 700 TVL 2/3 inch tubes are observed.