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Kim, T.S; Park, J.Y; Cuong, T.V; Kim, H.G; Lee, H.J; Suh, E.-K; Hong, C.-H
Journal of crystal growth, 07/2004, Volume: 267, Issue: 3Journal Article
Influence of antimony (Sb) as a surfactant and annealing on the structural and optical properties of InGaAsN/GaAs multiple quantum-well (MQW) grown by metalorganic chemical vapor deposition (MOCVD) is studied. It was found that an increase in compressive strain from an analysis of the satellite peaks in high-resolution X-ray diffraction was observed with increasing interruption time and annealing temperature. The photocurrent (PC) peak of as-grown MQW is blue-shifted with introduction time of excess Sb flux during growth interruption process. It seems to be due to the improvement of structure properties at interface by a surfactant suppressing surface diffusion phenomenon. After annealing process, the PC peak is blue-shifted with increasing annealing temperature for all samples. It seems to be related with the compressive strain and QW intermixing.
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