Color eletroluminescence from ZnS thin films multi-doped with rare-earth ions.

Visible Luminescence of Rare Earth Ions Doped Amorphous Zinc Oxide Thin Films Grown by Sputtering Technique

Oxidation Effects in Rare Earth Doped Topological Insulator Thin Films

The breaking of time-reversal symmetry (TRS) in topological insulators is a prerequisite for unlocking their exotic properties and for observing the quantum anomalous Hall effect (QAHE). The incorporation of dopants which exhibit magnetic long-range order is the most promising approach for TRS-breaking. REBiTe3, wherein 50% of the Bi is substitutionally replaced by a RE atom (RE = Gd, Dy, and H...

Cathodoluminescence from Amorphous and Nanocrystalline Nitride Thin Films Doped with Rare Earth and Transition Metals

Rare earth (RE) ion luminescence has long been used in laser and optical fiber communications technology. Bulk RE doped oxides were widely used in color phosphors for Cathode Ray Tubes. The wide band gap (WBG) semiconductors and insulators have been used for visible emission at 300 K from RE ions since the reports first by Zanata (Zanatta and Nunes 1998) for Er in silicon nitride (photoluminesc...

Performance Evaluation of ZnO Based Rare Earth Element Doped Thin Films

In DMS materials, a small fraction of a host semiconductor cation is substituted by magnetic ions. We chose as semiconducting host the transparent ZnO, with a bandgap of 3.3 eV at room temperature. Studies on ZnO doped with 3d transition metals indicated only small magnetic moments. The more recent results for Gd in GaN, indicating high magnetic moments, motivated us to investigate ZnO thin fil...

Excess modes and enhanced scattering in rare-earth-doped amorphous silicon thin films

B. L. Zink,1,* R. Islam,2 David J. Smith,2 and F. Hellman3 1Department of Physics and Astronomy, University of Denver, Denver, Colorado 80208, USA 2Center for Solid State Science and Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85287, USA 3Department of Physics, University of California, Berkeley, California 94720-7300, USA Received 20 March 2006; revised manusc...