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A Model of Charge Transfer in Bucket Brigade and Charge-coupled Devices

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3 Author(s)
Heller, L.G. ; IBM Components Division Laboratory, Burlington (Essex Junction), Vermont 05452, USA ; Chang, W.H. ; Lo, A.W.

Investigation of bucket brigade (BB) and charge-coupled devices (CCD) has resulted in the development of a general model for these devices and their various modes of operation. Similarities and differences between BB and CCD are discussed. The nonlinear partial differential equation of charge motion composed of self-induced drift, thermal diffusion, and electrode fringe-field terms is used to study CCD numerically. The factors that affect charge transfer are investigated by varying the stored charge density, the device length, the transfer-gate-to-storage electrode voltage, and the fringe field. The results include several plots of charge transfer vs time.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:16 ,  Issue: 2 )