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zeige Details Harmon, E. S.., Melloch, M. R.., ... Effective band-gap shrinkage in GaAs
In: Applied Physics Letters. - Woodbury, NY : Inst., ISSN 1077-3118, Vol. 64, No. 4 (1994), p. 502-504
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1994
Electrical measurements of the equilibrium np product (n2ie) in heavily doped n- and p-GaAs were performed. The n2ieD product (where D is the diffusivity) was measured by fitting the collector current-voltage characteristic of a homojunction bipolar transistor to an ideal diode equation modified to account for transport in thin base transistors. The n2ie product was then extracted from n2ieD by utilizing diffusivity results obtained with the zero-field time-of-flight technique. Our results show significant effective band-gap shrinkage in heavily doped p-GaAs, and very little effective band-gap shrinkage in heavily doped n-GaAs. At extremely heavy dopings, an effective band-gap widening is observed for both n- and p-GaAs and is attributed to the effects of degeneracy.
beteiligte Personen: Harmon, E. S.. , Melloch, M. R.. , Lundstrom, M. S..
Format: Elektronisch
Sprache: English
Erschienen: 1994.
Serie: AIP Digital Archive [Dig. Serial]
Schlagwörter:
URL: http://dx.doi.org/10.1063/1.111110

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