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Characterisation of Ga(1-x)In(x)Sb quantum wells (x~0.3) grown on GaAs using AlGaSb interface misfit buffer

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<mark>Journal publication date</mark>19/05/2015
<mark>Journal</mark>AIMS Materials Science
Issue number2
Number of pages11
Pages (from-to)86-96
Publication StatusPublished
<mark>Original language</mark>English


GaInSb multiple quantum wells (MQW) grown on GaAs using an AlGaSb interface misfit (IMF) metamorphic buffer layer technique exhibit superior infrared photoluminescence (PL) at room temperature compared with MQW grown directly on GaSb. PL emission was obtained in the range from 1.7 μm (4 K) to 1.9 μm (300 K) from Ga1-xInxSb samples containing five compressively strained QW with In content x~0.3. Structural and optical characterisation confirms that the AlGaSb IMF growth technique is promising for the development of photonic devices operating at extended wavelengths based on GaAs substrates.