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- 1. Phys. Rev. B 75, 085204 (2007) , “Internal structure of the neutral donor-bound exciton complex in cubic zinc-blende and wurtzite semiconductors”, Bernard Gil, Pierre Bigenwald, Mathieu Leroux, Plamen P. Paskov, and Bo MonemarWe calculate the fine structure splitting of the near band edge donor-bound excitons in major cubic semiconductors using an approach inspired by an earlier one that consists in replacing the Morse potential by a Kratzer one, in order to account for the repulsion between the donor and the hole. A... (Read more)
- 2. Phys. Rev. B 75, 033303 (2007) , “Excitons in silicon nanocrystallites: The nature of luminescence”, Eleonora Luppi, Federico Iori, Rita Magri, Olivia Pulci, Stefano Ossicini, Elena Degoli, and Valerio OlevanoThe absorption and emission spectra of silicon nanocrystals up to 1 nm diameter have been calculated within a first-principles framework. Our calculations include geometry optimization and the many-body effects induced by the creation of an electron-hole pair. Starting from hydrogenated silicon... (Read more)
- 3. J. Appl. Phys. 100, 073702 (2006) , “Size and shape effects on excitons and biexcitons in single InAs/InP quantum dots”, N. Chauvin, B. Salem, G. Bremond, G. Guillot, C. Bru-Chevallier, and M. GendrySingle InAs quantum dots grown on an InP vicinal substrate are studied using polarized microphotoluminescence. The study of electron-hole exchange energy splitting reveals that the energy splitting is influenced by quantum confinement. The biexciton binding energies found for single dots grown on... (Read more)
- 4. J. Appl. Phys. 100, 023109 (2006) , “Exciton fine structure and biexciton binding energy in single self-assembled InAs/AlAs quantum dots”, D. Sarkar, H. P. van der Meulen, J. M. Calleja, J. M. Becker, R. J. Haug, and K. PierzThe exciton and biexciton emissions of a series of single quantum dots of InAs in an AlAs matrix have been studied. These emissions consist of linear cross polarized doublets showing large values of both the biexciton binding energy and the fine-structure splitting. At increasing exciton emission... (Read more)
- 5. Phys. Rev. B 74, 195205 (2006) , “Magnetopolaron effect on shallow donors in GaN”, A. Wysmoek, R. Stpniewski, M. Potemski, B. Chwalisz-Pitka, K. Pakua, J. M. Baranowski, D. C. Look, S. S. Park, and K. Y. LeeResonant interaction between longitudinal-optic (LO) phonons and electrons bound on shallow donors in GaN is studied using magnetoluminescence of neutral-donor bound excitons (D0X). The experiments were performed on high-quality freestanding GaN material and heteroepitaxial... (Read more)
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Updated at 2010-07-20 16:50:39
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