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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Characterization of MOVPE-grown GaInNAs quantum well with multi-barriers by Z-contrast imaging and SIMS

Kim, K.S. and Kim, T. and Park, Y.J. and Baek, S.I. and Kim, Y.W. and Sun, H.D. and Dawson, M.D. (2006) Characterization of MOVPE-grown GaInNAs quantum well with multi-barriers by Z-contrast imaging and SIMS. Journal of Crystal Growth, 287 (2). pp. 620-624. ISSN 0022-0248

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Abstract

Structural and optical properties of MOVPE-grown GaInNAs quantum wells (QW) with multiple barriers (InGaAs/GaNAs) have been investigated. Significant improvement of optical performance in the 1.3 μm range is demonstrated with the proposed structure. PLE studies show that the density of N-related localized states can be reduced by the introduction of a thin InGaAs layer due to the improved interface quality. Based on the structural analysis, it is concluded that the InGaAs layer supports the nitrogen redistribution within the QW, resulting in a sharp interface. The blue-shift trend of the GaInNAs QW as a function of the GaNAs thickness can be explained by the reduction of the N content in the GaInNAs QW.