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AlGaAs/GaAs double barrier diodes with high peak-to-valley current ratio

We report the largest peak-to-valley current (PVC) ratios to date from AlGaAs/GaAs double barrier (either alloy barrier or superlattice barrier) diodes. PVC ratios as high as 3.6 and 21.7 were obtained from an AlAs/GaAs superlattice barrier structure at 300 and 77 K, respectively. In an alloy barrie...

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Bibliographic Details
Published in:Applied physics letters 1987-07, Vol.51 (2), p.121-123
Main Authors: HUANG, C. I, PAULUS, M. J, BOZADA, C. A, DUDLEY, S. C, EVANS, K. R, STUTZ, C. E, JONES, R. L, CHENEY, M. E
Format: Article
Language:English
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Summary:We report the largest peak-to-valley current (PVC) ratios to date from AlGaAs/GaAs double barrier (either alloy barrier or superlattice barrier) diodes. PVC ratios as high as 3.6 and 21.7 were obtained from an AlAs/GaAs superlattice barrier structure at 300 and 77 K, respectively. In an alloy barrier structure with x=0.42 (x=0.3), PVC ratios of 3.9 (2.2) and 14.3 (7.0) were observed at 300 and 77 K, respectively. We attribute these excellent results to a ‘‘two-step’’ spacer layer incorporated in the devices studied which facilitated the growth of high material quality.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.98588