Quantum Well Structures for Infrared Photodetection

by Wei Shi and D. H. Zhang

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This book studies the electrical, optical and structural properties of the Be-oped GaInas/AlGaAs multiple quantum-well structures (MQWs) at different doping density in the GaInls well, both designed and fabricated in house. The higher Be-doping density in the wells was found to enhance the compressive strain and increase barrier height of the GaInAs/AlGaAs MQWs through extensive optical characterisation. It caused the shifts of the sub-energy levels in the valence band of the well material and the absorption wavelength resulting from the intersubband absorption. These observations were verified by theoretical calculation based on the six-band Luttinger-Kohn model by taking the Be-doping into account.
  • ISBN10 1616683686
  • ISBN13 9781616683689
  • Publish Date 17 March 2011
  • Publish Status Unknown
  • Publish Country US
  • Imprint Nova Science Publishers Inc
  • Format Paperback
  • Pages 77
  • Language English