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Exciton energies and probability of their radiative decay in GaN/AIN quantum structures

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Konferencja
International Conference on Solid State Crystals : Material Science and Applications (4ICSSC) and Polish Conference on Crystal Growth (7PCCG) ; (16-20.05.2004 ; Zakopane-Kościelisko, Poland)
Języki publikacji
EN
Abstrakty
EN
Exciton energies and probabilities of radiative transition from exciton state are calculated in GaN/AlN quantum dots. Electric field conditioned by strain induced and spontaneous polarization is considered by means of tight bind approximation, electron-hole Coulomb interaction is calculated by means of perturbation theory. Despite the presence of an electrical field, the calculated Coulomb energy is significantly increased with respect to bulk material. In large dots, the Coulomb term as well as probability of radiation transition for higher energetic excitons was strongly increased.
Słowa kluczowe
EN
Twórcy
autor
  • Faculty of Physics, Tbilisi State University, 3 Chavchavadze Ave., 0128 Tbilisi, Georgia
  • Faculty of Physics, Tbilisi State University, 3 Chavchavadze Ave., 0128 Tbilisi, Georgia
Bibliografia
  • 1. R. Heitz, S. Rodt, A. Schliwa, and D. Bimberg, “Shape-dependent properties of self-organized quantum dots: Few-particle states and exciton-phonon coupling”, Phys. Stat. Sol. (b) 238, 273-280 (2003).
  • 2. E.C. Le Ru, J. Fack, and R. Murray, “Temperature and excitation density dependence of the photoluminescence from annealed InAs/GaAs quantum dots”, Phys. Rev. B67, 245318 (2003).
  • 3. M. Bassiri, G. Baldassarri, H. Högersthal, M. Capizzi, P. Frigeri, and S. Franchi, “Quantum size and shape effects on the excited states of InxGa1-xAs quantum dots”, Phys. Rev. B64, 245337 (2001).
  • 4. T. Passow, H. Feinke, T. Schmidt, J. Falta, A. Stockman, H. Selke, P.L. Ryder, K. Leonard, and D. Hommel, “Segregation- enhanced etching of Cd during ZnSe deposition on CdSe quantum dots”, Phys. Rev. B64, 193311 (2001).
  • 5. M. Scheiber, G. Bacher, S. Weber, A. Forchel, Th. Passow, and D. Hommel, “Polarization dynamics in self-assembeld CdSe/ZnSe quantum dots: The role of excess energy”, Phys. Rev. B67, 153302 (2003).
  • 6. A. Litvinov, A. Rosenauer, D. Gerthen, and N.N. Ledentsov, “Character of Cd distribution in ultrathin CdSe layers in a ZnSe matrix”, Phys. Rev. B61, 16819 (2000).
  • 7. I.L. Kresnokov, N.N. Ledentsov, A. Hoffman, D. Bimberg, A.V. Sakharov, W.V. Lundin, A.F. Tsatsul.nikov, A.S. Usikov, Zh.I. Alferov, Yu. G. Musikhin, and D. Gerthen, “Quantum dot origin of luminescence in InGaN-GaN structures”, Phys. Rev. B66, 155310 (2002).
  • 8. F. Widmann, B. Daudin, G. Feuillet, Y. Samson, J.L. Rouviere, and N. Pelekanos, “Growth kinetics and optical properties of self-organized GaN quantum dots”, J. Appl. Phys. 83, 7618-7624 (1998).
  • 9. F. Widmann, J. Simon, B. Daudin, G. Feuillet, J.L. Rouviere, N. Pelekanos, and G. Fishman, “Blue-light emission from GaN self-assembled quantum dots due to giant piezoelectric effect”, Phys. Rev. B58, R15989 (1998).
  • 10. K. Shimada, T. Sota, and Suzuki, “First- principles study on electronic and elastic properties of BN, AlN, and GaN”, J. Appl. Phys. 84, 4951 (1998).
  • 11. G. Martin, A. Botchkarev, A. Rockett, and H. Morkos, “Valence- band discontinuities of wurtzite GaN, AlN, and InN heterojunctions measured by x-ray photoemission spectroscopy”, Appl. Phys. Lett. 68, 2541 (1996).
  • 12. S. Flügge, Practical Quantum Mechanics, Springer-Verlag, Berlin, 1971.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWA2-0010-0031
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