Improved AlGaAs/GaAs double-barrier resonant tunneling structures using two-dimensional source electrons

Jenq-Shinn Wu, C. P. Lee, C. Y. Chang, K. H. Chang, D. G. Liu, D. C. Liou

Research output: Contribution to journalArticle

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We report the enhancement of peak-to-valley current ratios (PVCRs) of double-barrier resonant tunneling structures (DBRTSs) based on the AlGaAs/GaAs material system. The PVCRs as high as 25.4 and 18 have been obtained at 77 K for superlattice and alloy barrier structures with 0.2-μm undoped electrodes, respectively. These are the largest PVCRs to date for AlGaAs/GaAs DBRTSs. The large band bending across the undoped electrodes causes size quantization of the accumulation layer, resulting in better resonant tunneling characteristics.

Original languageEnglish
Pages (from-to)1122-1123
Number of pages2
JournalJournal of Applied Physics
Issue number2
Publication statusPublished - 1991 Dec 1


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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