Extending response of Schottky-barrier IR detectors to longer wavelengths

Dietrich Meyerhofer; Harvey R. Gilmartin

doi:10.1117/12.158583

15 October 1993 Extending response of Schottky-barrier IR detectors to longer wavelengths

Dietrich Meyerhofer, Harvey R. Gilmartin

Proceedings Volume 2022, Photodetectors and Power Meters; (1993) https://doi.org/10.1117/12.158583
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

PtSi/silicon Schottky barrier detectors and focal plane arrays are important components for the near and medium infrared spectral range. Ir/Si silicon detectors have smaller barriers with response to the 10 - 12 micrometers range, but are difficult to manufacture reliably. An alternate way to extending the spectral response of these detectors is to use a heavier doped substrate, particularly if only a thin surface layer is heavily doped. We have modeled such surface doped Schottky barriers and have calculated the expected photoresponse. Considerable reductions in barrier height are possible while keeping dark currents to a minimum. Experimental results confirm the model.

Citation Download Citation

Dietrich Meyerhofer and Harvey R. Gilmartin "Extending response of Schottky-barrier IR detectors to longer wavelengths", Proc. SPIE 2022, Photodetectors and Power Meters, (15 October 1993); https://doi.org/10.1117/12.158583

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