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The Dynamic Response of Htdrogenated Amorphous Silicon Imaging Pixels

  • J. Yorkston (a1), L. E. Antonuk (a1), E. J. Morton (a1), J. Boudry (a1), V. Huang (a1), C. W. Kim (a1), M. J. Longo (a2) and R. A. Street (a3)...


The dynamic response of pixels from an a-Si:H imaging array are investigated and a model is developed to explain their observed behavior. Such arrays are under development for radiotherapy and diagnostic x-ray applications.



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1. Naruse, Y.., and Hatayama, T., “Metal/amorphous silicon multilayer radiation detectors,” IEEE Trans. Nucl. Sci. 36, 13471352, (1989).
2. Takahashi, T.., Itoh, H.., Shimada, T.., Takeuchi, H.., “Design of integrated radiation detectors with a-Si:H photodiodes on ceramic scintillators for use in x-ray computed tomography,” IEEE Trans. Nucl. Sci. 37, 14781482, (1990).
3. Antonuk, L.E., et al.: “Large area amorphous silicon photodiode arrays for radiotherapy and diagnostic imaging.” Accepted for publication in Nucl. Instr. and Meth., 1991.
4. Antonuk, L.E., et al.: “Signal, noise, and readout considerations in the development of amorphous silicon photodiode arrays for radiotherapy and diagnostic x-ray imaging”. Accepted for publication in proceedings of the SPIE Conference “Medical Imaging V”, San Jose, CA (1991).
5. Antonuk, L.E., et al.: “Light-Response Characteristics of Amorphous Silicon Arrays for Megavoltage and Diagnostic Imaging.” these proceedings.


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