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  1. No Access

    Chapter

    Polariton Devices Based on Wide Bandgap Semiconductor Microcavities

    Cavity polaritons which are the elementary optical excitations in semiconductor microcavities may be viewed as a superposition of excitons and cavity photons. The major feature of cavity polariton technology c...

    Ryoko Shimada, Ümit Özgür, Hadis Morkoç in Nanoscale Photonics and Optoelectronics (2010)

  2. No Access

    Article

    Photoelectrochemical Etching of GaN Thin Films With Varying Carrier Concentrations

    The evolution of the surface morphology of unintentionally doped and Si-doped GaN samples subjected to photoelectrochemical (PEC) etching in the carrier-limited regime in aqueous KOH is reported. It was found ...

    Jacob H. Leach, Ümit Özgür, Hadis Morkoç in MRS Online Proceedings Library (2008)

  3. No Access

    Article

    Growth of High-Quality Pb(ZrxTi1-x)O3 Films by Peroxide MBE and Their Optical and Structural Characteristics

    The growth of Pb(ZrxTi1-x)O3 (PZT) films by molecular beam epitaxy was demonstrated. Single-crystal, single-phase PZT films were grown on (001) SrTiO3 substrates at a growth temperature of 600°C. In situ monitori...

    Natalia Izyumskaya, Vitaliy Avrutin, **ng Gu, Umit Ozgur… in MRS Online Proceedings Library (2007)

  4. No Access

    Article

    Structural and Optical Properties of PbTiO3 Grown on SrTiO3 Substrates by Peroxide MBE

    Lead titanate (PbTiO3), a ferroelectric material with perovskite structure, has received a great deal of attention owing to a unique combination of its piezoelectric, pyroelectric, dielectric, electo- and acousto...

    Natalia Izyumskaya, Vitaliy Avrutin, **ng Gu, Umit Ozgur… in MRS Online Proceedings Library (2007)

  5. No Access

    Article

    Morphology and Optical Properties of ZnO Nanorods Grown by Catalyst-Assisted Vapor Transport on Various Substrates

    ZnO nanorods were grown by catalyst-assisted vapor phase transport on Si(001), GaN(0001)/c-Al2O3, and bulk ZnO(0001) substrates. Morphology studies showed that ZnO nanorods grew mostly perpendicularly to the GaN ...

    Vitaliy Avrutin, Umit Ozgur, Natalia Izyumskaya… in MRS Online Proceedings Library (2007)

  6. No Access

    Article

    Persistent Photoconductivity in High-mobility AlxGa1−xN/AlN/GaN Heterostructures Grown by Metal-organic Vapor-phase Epitaxy

    We report on the persistent photoconductivity (PPC) effect in AlxGa1−xN/AlN/GaN heterostructures with two different Al compositions (x=0.15 and 0.25). The two-dimensional electron gas (2DEG) was characterized by ...

    Necmi Biyikli, Umit Ozgur, **anfeng Ni, Yi Fu… in MRS Online Proceedings Library (2007)