Phonon-assisted ultraviolet anti-Stokes photoluminescence from GaN film grown on Si (111) substrate

Tripathy, Suvranta K.; Guibao Xu; Xiaodong Mu; Ding, Yujie J.; Jamil, Muhammad; Arif, Ronald A.; Tansu, Nelson; Khurgin, Jacob B.
November 2008
Applied Physics Letters;11/17/2008, Vol. 93 Issue 20, p201107
Academic Journal
Phonon-assisted anti-Stokes photoluminescence (ASPL) in the ultraviolet region has been observed in the GaN film grown on a Si (111) substrate. The ASPL peaks are observable only at sufficiently low temperatures. In addition, even if the photon energy is ≈318 meV below the transition energy for bound excitons, the ASPL peaks can be still observed. Based on our analysis, the donor-acceptor pairs and bound excitons have played primary roles in the generation of ASPL. Upon the absorption of photons, the ionizations of the neutral donors and neutral acceptors are assisted by longitudinal-optical phonons.


Related Articles

  • Photodissociation dynamics of pyridine. Ming-Fu Lin; Dyakov, Yuri A.; Chien-Ming Tseng; Mebel, Alexander M.; Sheng Hsien Lin; Yuan T. Lee; Chi-Kung Ni // Journal of Chemical Physics;8/1/2005, Vol. 123 Issue 5, p054309 

    Photodissociation of pyridine, 2,6-d2-pyridine, and d5-pyridine at 193 and 248 nm was investigated separately using multimass ion imaging techniques. Six dissociation channels were observed at 193 nm, including C5NH5→C5NH4+H (10%) and five ring opening dissociation channels,...

  • Photodissociation dynamics of indole in a molecular beam. Ming-Fu Lin; Chien-Ming Tseng; Lee, Yuan T.; Chi-Kung Ni // Journal of Chemical Physics;9/22/2005, Vol. 123 Issue 12, p124303 

    Photodissociation of indole at 193 and 248 nm under collision-free conditions has been studied in separate experiments using multimass ion imaging techniques. H atom elimination was found to be the only dissociation channel at both wavelengths. The photofragment translational energy distribution...

  • Controlling inelastic light scattering quantum pathways in graphene. Chi-Fan Chen; Cheol-Hwan Park; Boudouris, Bryan W.; Horng, Jason; Geng, Baisong; Girit, Caglar; Zettl, Alex; Crommie, Michael F.; Segalman, Rachel A.; Louie, Steven G.; Feng Wang // Nature;3/31/2011, Vol. 471 Issue 7340, p617 

    Inelastic light scattering spectroscopy has, since its first discovery, been an indispensable tool in physical science for probing elementary excitations, such as phonons, magnons and plasmons in both bulk and nanoscale materials. In the quantum mechanical picture of inelastic light scattering,...

  • Multiconnected rotating helical structures in the volume of a wave front inverting mirror. Okulov, A. Yu.; Zakharyan, R. A. // Optics & Spectroscopy;Sep2009, Vol. 107 Issue 3, p424 

    Phase conjugating mirrors based on stimulated Brillouin scattering (SBS) are analyzed from the point of view of conservation of the angular momentum of light. The three-wave system of equations for the pump field, the Stokes wave, and the acoustic field is used to demonstrate that the...

  • Simultaneous localization of photons and phonons in two-dimensional periodic structures. Maldovan, Martin; Thomas, Edwin L. // Applied Physics Letters;6/19/2006, Vol. 88 Issue 25, p251907 

    We demonstrate theoretically the simultaneous localization of photons and phonons in the same spatial region by introducing lattice defects in a periodic array of dielectric/elastic material that exhibits gaps for both electromagnetic and elastic waves. Transverse electromagnetic waves, pure...

  • A quantum cascade laser with coherent electron transport on two-photon transitions in a three-barrier heterostructure. Golant, E. I.; Kapralova, A. A.; Lukashin, V. M.; Pashkovskiĭ, A. B. // Technical Physics Letters;Apr2009, Vol. 35 Issue 4, p368 

    An analytical solution of the Schrödinger equation describing resonance transitions between three quantum levels in a strong high-frequency electric field has been obtained for asymmetric three-barrier structures with high thin barriers. It is established that most electrons that arrive at...

  • Efficient UV–visible up-conversion emission in Er3+/Yb3+ co-doped La2O3 nano-crystalline phosphor. Singh, S. K.; Singh, A. K.; Kumar, D.; Prakash, O.; Rai, S. B. // Applied Physics B: Lasers & Optics;Jan2010, Vol. 98 Issue 1, p173 

    A nano-crystalline La2O3: Er3+/Yb3+ phosphor sample has been synthesized through the solution combustion route using urea as a reducing agent. Thermal, structural and optical characterizations have been carried out to explore several of its properties. By thermal analysis one concludes to the...

  • Little lambda. Janowski, Pat; Brown, Peter G. // Sciences;Jan/Feb98, Vol. 38 Issue 1, p8 

    Focuses on the Greek letter lambda, which was interpreted as the energy of the quantum vacuum. Introduction of an energy term into equations by Einstein; Proposition of a mechanism by Steven Carlip, a physicist at the University of California; Indepth look at quantum vacuum.

  • Quantum Correlations from Local Amplitudes and the Resolution of the Einstein�Podolsky�Rosen Nonlocality Puzzle. Unnikrishnan, C. S. // Optics & Spectroscopy;Sep2001, Vol. 91 Issue 3, p393 

    The Einstein-Podolsky-Rosen (EPR) nonlocality puzzle has been recognized as one of the most important unresolved issues in the foundational aspects of quantum mechanics. We show that the problem is more or less entirely resolved, if the quantum correlations are calculated directly from local...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics