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- W2045783208 abstract "Iron-doped indium phosphide layers were grown by gas source molecular beam epitaxy with a high purity solid iron source. The iron concentration varied from some 1016 cm−3 to a few 1019 cm−3. N-i-n or n+-i-n+ layer structures were realized on two types of substrate: semi-insulating or n+. Some iron-doped layers were also produced directly on a semi-insulating substrate. Resistivity values of 103 Ω cm to 108 Ω cm were obtained, depending on the iron concentration. The iron incorporation was found to be related to the growth conditions, especially the iron cell temperature and the growth substrate temperature. The layers were characterized by secondary ion mass spectrometry and scanning photoluminescence measurements at room temperature. The latter technique used either photoluminescence integrated signal measurements or recorded InP spectra. The photoluminescence intensity was found to be a valuable parameter for evaluating the iron incorporation. For layers having the highest resistivities, obtained at iron concentrations of a few 1017 cm−3, the photoluminescence intensity was comparable with that obtained for bulk semi-insulating substrates, and the density of defects was found to be (2–5) × 104 cm−2." @default.
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- W2045783208 date "1993-06-01" @default.
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- W2045783208 title "Scanning photoluminescence characterization of iron-doped gas source molecular beam epitaxy indium phosphide layers" @default.
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- W2045783208 doi "https://doi.org/10.1016/0921-5107(93)90402-9" @default.
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