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Ultra-High-Sensitive Image Pickup Tubes Using Avalanche Multiplication in a-Se.

Published online by Cambridge University Press:  21 February 2011

K. Tsuji ,
T. Ohshima ,
T. Hirai ,
N. Gotoh ,
K. Tanioka  and
K. Shidara
K. Tsuji
Affiliation:
Central Research Laboratory, Hitachi Ltd., Kokubunji, Tokyo 185, Japan
T. Ohshima
Affiliation:
Central Research Laboratory, Hitachi Ltd., Kokubunji, Tokyo 185, Japan
T. Hirai
Affiliation:
Central Research Laboratory, Hitachi Ltd., Kokubunji, Tokyo 185, Japan
N. Gotoh
Affiliation:
Electron Tube Division, Hitachi Ltd., Mobara, Chiba, 297, Japan
K. Tanioka
Affiliation:
NHK Science and Technical Research Laboratories, Setagaya, Tokyo 157, Japan
K. Shidara
Affiliation:
NHK Science and Technical Research Laboratories, Setagaya, Tokyo 157, Japan
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Abstract

Extremely high-sensitive image pickup tubes with sensitivities 1000 times higher than those of conventional tubes are fabricated using the avalanche phenomenon in a-Se as photoconductive targets. The excess avalanche noise of a video signal is found to be much less than that expected, based on the carrier ionization rates. The frequency spectra of the noise currents of both the pickup tubes and sandwich-type photocells are examined. The results are compared with those of a simulation, and it is found that the excess noise can be reduced by the charge-storage operation of imaging devices.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 219: Symposium A – Amorphous Silicon Technology - 1991 , 1991 , 507
Copyright
Copyright © Materials Research Society 1991

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References

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