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Structure of the InP/SiO₂ interface

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  • InP/SiO₂ interfaces have been studied by high resolution electron microscopy in cross section, by ellipsometry, and by x-ray photoelectron spectroscopy. The roughness of the interface is shown to vary from 10 to 100 Å peak to peak depending on the InP surface treatment prior to SiO₂ desposition, and some evidence is found for a small amount of native oxide and P segregation at the interface. Thermal oxide grown on InP at 350 °C is shown to consist of two separate layers, an inner one of 30–70 Å thickness and probably composition InPO₄, and an outer one of 60-Å thickness and probably composition In₂O₃.
  • Article appears in Applied Physics Letters (http://apl.aip.org/) and is copyrighted by American Institute of Physics (http://www.aip.org/).
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  • Liliental, Z., Krivanek, O. L., Wager, J. F., & Goodnick, S. M. (1985). Structure of the InP/SiO₂ interface [Electronic version]. Applied Physics Letters, 46(9), 889-891.
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  • 46
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  • 9
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