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- W2108792346 abstract "We study transport mechanisms, effective mass, and band structure by measuring the resistivity, Hall, and Seebeck and Nernst coefficients in heavily phosphorus-doped polycrystalline silicon films made by thermal crystallization of amorphous silicon. We observe a change in transport mechanism which results in an increase in electron mobility from 10% to 80% of the single-crystal silicon mobility as the carrier concentration increases from 1019 to 1020 cm−3. Our measurements of effective mass at the Fermi level indicate that as the carrier concentration increases, there is a shift from impurity-band transport to conduction-band transport, and that the electron effective mass is lower in the impurity band than in the conduction band of Si. The shift to conduction-band transport improves electron mobility with carrier density by improving intragrain carrier mean free path lengths and relaxation times." @default.
- W2108792346 created "2016-06-24" @default.
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- W2108792346 date "2009-02-01" @default.
- W2108792346 modified "2023-09-27" @default.
- W2108792346 title "Electron transport and band structure in phosphorus-doped polycrystalline silicon films" @default.
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- W2108792346 doi "https://doi.org/10.1063/1.3068349" @default.
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