J. Semicond. > 2008, Volume 29 > Issue 7 > 1318-1325

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Temperature Dependence of the Energies of Quasi-Two-Dimensional Strong-Coupling Excitons

Eerdunchaolu

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Abstract: The influences of lattice vibration and polaron effects on the ground state and the excited state of the system,for which the exciton is strongly coupled with interface-optical (IO) phonons but weakly or intermediately coupled with bulk-longitudinal-optical (LO) phonons in a quantum well,are studied using the linear-combination operator and the LLP variational method.The expressions for the ground state energy shift and the first internal excited state energy shift of the exciton as a function of the well width and temperature are derived.Numerical calculations for an AgCl/AgBr/AgCl QW,for example,are performed.The results indicate that the ground state energy shift and the first internal excited state energy shift increases with the temperature for strong exciton-IO-phonon coupling but decreases with the temperature for weak exciton-LO-phonon coupling.

Key words: strong-coupling excitonenergy shiftpolaron effecttemperature dependence

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    Received: 18 August 2015 Revised: 09 January 2008 Online: Published: 01 July 2008

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      Eerdunchaolu. Temperature Dependence of the Energies of Quasi-Two-Dimensional Strong-Coupling Excitons[J]. Journal of Semiconductors, 2008, 29(7): 1318-1325. ****E E D C L. Temperature Dependence of the Energies of Quasi-Two-Dimensional Strong-Coupling Excitons[J]. J. Semicond., 2008, 29(7): 1318.
      Citation:
      Eerdunchaolu. Temperature Dependence of the Energies of Quasi-Two-Dimensional Strong-Coupling Excitons[J]. Journal of Semiconductors, 2008, 29(7): 1318-1325. ****
      E E D C L. Temperature Dependence of the Energies of Quasi-Two-Dimensional Strong-Coupling Excitons[J]. J. Semicond., 2008, 29(7): 1318.

      Temperature Dependence of the Energies of Quasi-Two-Dimensional Strong-Coupling Excitons

      • Received Date: 2015-08-18
      • Accepted Date: 2007-12-05
      • Revised Date: 2008-01-09
      • Published Date: 2008-08-01

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