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Computation of bipolar transistor base parameters for general distribution of impurities in base

Gover, Avraham and Grinberg, Jan and Seidman, Ady (1972) Computation of bipolar transistor base parameters for general distribution of impurities in base. IEEE Transactions on Electron Devices, 19 (8). pp. 967-975. ISSN 0018-9383. http://resolver.caltech.edu/CaltechAUTHORS:20170809-173625051

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Abstract

A procedure is suggested by which dc and ac base gain parameters can be computed for general impurity distributions in the base. The procedure consists of solving the current equation as series in the recombination time (1/τ). The series expansion coefficients are computed for a Gaussian distribution up to first order, along with the resulting base alpha transport factor and the transit time. Mobility variation with impurity concentration is also taken into account. Explicit expressions for cutoff frequencies and excess phase shift ω_T, ω_ɑ, ω_β, m) are developed using the coefficients of the series expansion up to the second order. Computation of these parameters for the case of an exponential distribution, with and without assumption of diffusion coefficient variation, results in new expressions and values.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/T-ED.1972.17526DOIArticle
http://ieeexplore.ieee.org/document/1476997/PublisherArticle
Additional Information:© 1972 IEEE. Manuscript received July 7, 1971; revised March 9, 1972.
Record Number:CaltechAUTHORS:20170809-173625051
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170809-173625051
Official Citation:A. Gover, J. Grinberg and A. Seidman, "Computation of bipolar transistor base parameters for general distribution of impurities in base," in IEEE Transactions on Electron Devices, vol. 19, no. 8, pp. 967-975, Aug. 1972. doi: 10.1109/T-ED.1972.17526
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:80049
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:10 Aug 2017 16:57
Last Modified:10 Aug 2017 16:57

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