Photoresponse Modeling and Analysis of InGaP/GaAs Double-HPTs

  • Hassan A Khan
  • , Ali A Rezazadeh
  • , Yongjian Zhang

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Photoresponse of GaAs-based double heterojunction phototransistors (DHPTs), in surface-illuminated orientation, has been analyzed with a modified small-signal model. The effect of incident optical illumination on various intrinsic parameters has been discussed for In0.49Ga0.51P/GaAs N+p+N- DHPT. Since the primary detecting material is GaAs, the device is optimized to detect short wavelength at 850nm. A novel formulation for optical flux absorption in DHPTs is also provided along with its comparison with single-HPTs. The analysis of DHPTs presented in this work can be utilized for performance enhancement through device optimization in sensors, photoreceivers in optical networks and remote sensing applications employing integrated circuits.
    Original languageEnglish
    Article numberJQE-133839-2014
    Pages (from-to)1044-1051
    Number of pages7
    JournalI E E E Journal of Quantum Electronics
    Volume50
    DOIs
    Publication statusPublished - 4 Dec 2014

    Keywords

    • Phototransistors, Double-heterojunction, Modeling, frequency response, small signal model.

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