Dry etching of InP material based on inductivity coupled plasma

Qi Wang, Jin Long Zhang, Li Jun Wang, Yun Liu

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    Abstract

    Dry etching of InP material based on inductivity coupled plasma(ICP) was thoroughly studied, Cl 2/Ar/H 2 gas mixture was adopted, and the etching depth could reach 10 μm with a vertical and a smooth surface. The gas percentages of the total gas versus etching rate, and the applicable regions of Ni, SiO 2, and the combination of Ni and SiO 2 were studied, respectively. The regions of the effective etching rate and selectivity against Ni are 450~1200 nm/min and 175~190, respectively. The choosing and fabrication approaches adopted are highly suitable for any semiconductor material based on ICP system.

    Original languageEnglish
    Pages (from-to)1276-1280
    Number of pages5
    JournalFaguang Xuebao/Chinese Journal of Luminescence
    Volume32
    Issue number12
    DOIs
    StatePublished - Dec 2011

    Keywords

    • Dry etching
    • Hard mask
    • InP
    • Inductivity coupled plasma

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