WebNov 28, 2024 · Using the determined optical phonon energies, we analyzed photoluminescence broadening mechanisms. At low temperatures (<100 K), the broadening is due to acoustic phonon scattering, whereas at high temperatures, LO phonon-exciton coupling is the dominant mechanism. Our results help explain the broad … Webexhibit pronounced phonon replicas, in which two-phonon replicas outshine the one-phonon replicas due to the existence of near( ly) resonant exciton-phonon scatterings and numerous two-phonon scattering paths. We can simulate the spectra by comprehensive theoretical replica modeling and calculation s.
Phonon replicas associated with donor–bound–excitons in GaN
Webthemselves as phonon replicas of the zero-phonon line corresponding to the impurity exciton in the absorption spectrum (Fig. 1). In order to separate the exciton con-tribution to impurity absorption and to improve the sen-sitivity of the technique, we used electric-field modula-tion. Such a technique allows high-order processes to be recorded ... WebAug 19, 1998 · Abstract. Phonon sidebands have been observed on the donor–bound–exciton transitions in two samples of GaN grown by hydride vapor phase … churches in altamonte springs
Coherent Spin Preparation of Indium Donor Qubits in Single …
WebAug 10, 2016 · For the phonon replicas that emerge in the defect-related emission band, we find that a modified notation, i.e., , is more appropriate (than for the X LO(T)/TO(T) phonon replica) because in this case the real electronic states … Weband the issue was resolved in Ref. 2 by using the phonon spectra that had been reported by then by Hoffmann et al. [3]. A satisfactory fit of the P-series phonon repli-cas with the phonon data was reported by Choyke etal. [4]. The phonon replica spectrum based on the free ex-citon I-lines has more recently been reported by Ivanov etal. [5]. WebAug 15, 2024 · The most interesting phenomenon found was that several strong PL emission peaks associated with phonon replicas were clearly observed in the PL … churches in alton hampshire