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- W2076705788 abstract "Electroreflectance (ER) spectra of ordered Ga0.5In0.5P alloys grown on GaAs by organometallic vapor phase epitaxy (OMVPE), have been investigated in the region of the E0 and E1 band edges, together with their photoluminescence (PL) measurements and transmission electron diffraction (TED) observation. The ordered OMVPE-grown Ga0.5In0.5P alloys have shown an anomalous shift of the PL peak energy at the E0 band edge, and exhibit CuPt-type ordering. Growth temperature, V/III ratio and substrate orientation effects on ER spectra have been studied. The results reveal anomalous ER structures which appear in ordered OMVPE-grown Ga0.5In0.5P alloys on (001) GaAs and are not observed in bulk and LPE-grown Ga0.5In0.5P alloys. In particular, the ER structures observed at 2.2 and 2.4 eV have been explained by ordering-induced pseudodirect interband transitions. Substrate orientation effects have shown that the anomalous ER spectra are observed only on (001) GaAs substrates and not on (111)B GaAs substrates. This result suggests that the origin of the ordering in OMVPE-grown Ga0.5In0.5P alloys is closely related to the surface atomic structure of the GaAs substrate." @default.
- W2076705788 created "2016-06-24" @default.
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- W2076705788 date "1989-11-01" @default.
- W2076705788 modified "2023-09-26" @default.
- W2076705788 title "Electroreflectance of ordered Ga0.5In0.5P Alloys" @default.
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- W2076705788 doi "https://doi.org/10.1016/0022-0248(89)90184-x" @default.
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