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- W2460543912 abstract "Interface properties of an amorphous (a-)Se/GaAs(001) heterostructure made on a Se-stabilized (2×1) GaAs surface are investigated. Photoemission spectroscopy analysis shows that the band alignment is staggered with the valence band discontinuity of -0.27±0.05 eV. Amorphous-Se/GaAs diode current-voltage characteristics also support the staggered alignment. This is suitable for applications to photoelectric devices in which photogenerated holes in GaAs are injected into a-Se for low-noise avalanche multiplication. Capacitance-voltage characteristics of the diode show the presence of interface states near the conduction band edge of GaAs, in agreement with the Fermi-level position measured from photoemission spectroscopy. These pinning states are introduced through the deposition of a-Se, and may be attributed to outdiffused Ga atoms in a-Se." @default.
- W2460543912 created "2016-07-22" @default.
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- W2460543912 date "1991-01-01" @default.
- W2460543912 modified "2023-09-25" @default.
- W2460543912 title "Amorphous-Se/GaAs--A Novel Heterostructure for Solid State Devices--" @default.
- W2460543912 doi "https://doi.org/10.7567/ssdm.1991.pc1-4" @default.
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