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Quantum-confined subband transitions of a GaAs sawtooth doping superlattice

Journal Article


Abstract


  • In this letter we present for the first time the observation of quantum-confined transitions of a short-period sawtooth doping superlattice in photocurrent and luminescence. The luminescence was investigated with different laser intensities. Due to the nature of the band modulation of sawtooth doping superlattices, the resonant energies for optical transitions are dependent on the intensity of the laser beam. We present a model, which incorporates both the Kronig-Penney energy dispersion and the self-consistent intensity-dependent internal field to explain the observed energy shift. Furthermore, the differences between photocurrent and luminescence measurements are discussed.

Publication Date


  • 1989

Citation


  • Ullrich, B., Zhang, C., & Klitzing, K. V. (1989). Quantum-confined subband transitions of a GaAs sawtooth doping superlattice. Applied Physics Letters, 54(12), 1133-1135. doi:10.1063/1.100739

Scopus Eid


  • 2-s2.0-0242344023

Start Page


  • 1133

End Page


  • 1135

Volume


  • 54

Issue


  • 12

Abstract


  • In this letter we present for the first time the observation of quantum-confined transitions of a short-period sawtooth doping superlattice in photocurrent and luminescence. The luminescence was investigated with different laser intensities. Due to the nature of the band modulation of sawtooth doping superlattices, the resonant energies for optical transitions are dependent on the intensity of the laser beam. We present a model, which incorporates both the Kronig-Penney energy dispersion and the self-consistent intensity-dependent internal field to explain the observed energy shift. Furthermore, the differences between photocurrent and luminescence measurements are discussed.

Publication Date


  • 1989

Citation


  • Ullrich, B., Zhang, C., & Klitzing, K. V. (1989). Quantum-confined subband transitions of a GaAs sawtooth doping superlattice. Applied Physics Letters, 54(12), 1133-1135. doi:10.1063/1.100739

Scopus Eid


  • 2-s2.0-0242344023

Start Page


  • 1133

End Page


  • 1135

Volume


  • 54

Issue


  • 12