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- W2006716209 abstract "Data are presented on the reduction of layer intermixing (disordering) in AlGaAs–GaAs quantum well heterostructures (QWH) during high-temperature anneals by an initial low-temperature ‘‘blocking’’ Zn diffusion. Room-temperature photoluminescence measurements of the increase in the lowest electron-to-heavy-hole transition energy in the QW are used to characterize the extent of layer intermixing. Doped (C and Si) samples annealed (850 °C, 12 h) after a low-temperature blocking Zn diffusion (480 °C) exhibit reductions in energy shift from ∼177 meV to as little as ∼18 meV. Similar effects are also observed, but to a lesser extent, for undoped samples. The improved thermal stability is attributed to a Zn-diffusion induced reduction in the number of column-III vacancies in the active layers and is confirmed by secondary-ion mass spectroscopy measurements." @default.
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- W2006716209 date "1995-09-25" @default.
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- W2006716209 title "Improved thermal stability of AlGaAs–GaAs quantum well heterostructures using a ‘‘blocking’’ Zn diffusion to reduce column‐III vacancies" @default.
- W2006716209 doi "https://doi.org/10.1063/1.114356" @default.
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