Near-complete suppression of thermal donor formation is observed at the silicon surface independent of annealing time. Schottky barrier capacitance-voltage profiling of p-type Czochralski silicon following heat treatment at 200-450-degrees-C in N2 indicates thermal donor depletion near the surface consistent with earlier reports. Analysis of the capacitance-voltage method indicates that series resistance effects on the depth profile are negligible. Possible mechanisms for the thermal donor depletion at the silicon surface are discussed.
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Covalent Mat Corp, Silicon Business Grp, Niigata 9570197, Japan
Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058577, JapanCovalent Mat Corp, Silicon Business Grp, Niigata 9570197, Japan
Takeda, Ryuji
Narita, Masahiro
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Covalent Mat Corp, Silicon Business Grp, Niigata 9570197, JapanCovalent Mat Corp, Silicon Business Grp, Niigata 9570197, Japan
Narita, Masahiro
Tani-ike, Seiji
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Covalent Mat Corp, Core Technol Ctr, Kanagawa 2570031, JapanCovalent Mat Corp, Silicon Business Grp, Niigata 9570197, Japan
Tani-ike, Seiji
Yamabe, Kikuo
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Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058577, JapanCovalent Mat Corp, Silicon Business Grp, Niigata 9570197, Japan