Quantum-well thickness dependence of spin polarization of excitons


https://doi.org/10.4081/nd.2011.e5
Vol. 1 No. 1 (2011)
Submitted: 7 July 2011
Accepted: 29 September 2011
Published: 20 October 2011
quantum well, conduction-band-electron, circularly polarized photoluminescence, phase-space filling.
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Authors

  • M. Idrish Miah
    m.miah@griffith.edu.au
    Department of Physics, University of Chittagong, Bangladesh; Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Brisbane, Australia.
The optical orientation of exciton spins in semiconductor quantum wells (SQWs) was investigated by observing the circular polarization of the photoluminescence (PL). The left/right circularly polarized PL in SQWs was measured. It was found that there is a difference between the two different polarization conditions, which is caused by spin-dependent phase-space filling. The PL polarization was estimated from the signals of the left and right circularly polarized PL and was found to depend on the well thickness of SQWs as well as on the sample temperature. The influence of an electric field on the PL polarization was studied.

M. Idrish Miah, Department of Physics, University of Chittagong, Bangladesh; Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Brisbane
Prof., Queensland Micro- and Nanotechnology Centre

Supporting Agencies


Miah, M. I. (2011). Quantum-well thickness dependence of spin polarization of excitons. Nanotechnology Development, 1(1), e5. https://doi.org/10.4081/nd.2011.e5

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