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- W2077181522 abstract "The photovoltage spectra of GexSi1-x strained layer superlattices and Ge/Si ultrathin superlattices at different temperatures ranging from 18K to 300K have been measured by the capacitor coupling method. The experimental results show that for all the samples studied there is strong photovoltage at longwave bands in which the photon energy is less than the bandgap of Si. Four peaks corresponding to exciton transitions from the valence band to electron subbands and from hole subbands to the conduction band have been observed in a sample in which electrons and holes are localized in different layers. The mechanism for the photovoltaic effect in GexSi1-x strained layer superlattices is briefly discussed." @default.
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- W2077181522 date "1993-03-01" @default.
- W2077181522 modified "2023-10-14" @default.
- W2077181522 title "Photovoltage spectroscopy study of GexSi1-x/Si superlattices" @default.
- W2077181522 doi "https://doi.org/10.1006/spmi.1993.1055" @default.
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