scholarly journals Electrostatic tuning of Kondo effect in a rare-earth-doped wide-band-gap oxide

2013 ◽  
Vol 87 (15) ◽  
Author(s):  
Yongfeng Li ◽  
Rui Deng ◽  
Weinan Lin ◽  
Yufeng Tian ◽  
Haiyang Peng ◽  
...  
Keyword(s):  
Rare Earth ◽  
Band Gap ◽  
Kondo Effect ◽  
Wide Band ◽  
Wide Band Gap ◽  
Rare Earth Doped

Rare Earth Doped Zinc Oxide Nanowires

2008 ◽  
Vol 8 (1) ◽  
pp. 244-251 ◽  
Author(s):  
S. Geburt ◽  
D. Stichtenoth ◽  
S. Müller ◽  
W. Dewald ◽  
C. Ronning ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Rare Earth ◽  
Thermal Quenching ◽  
Wide Band ◽  
Wide Band Gap ◽  
Oxide Nanowires ◽  
Defect Sites ◽  
Optical Activation ◽  
Re Elements ◽  
Rare Earth Doped

Zinc oxide (ZnO) nanowires were grown via thermal transport and subsequently doped with different concentrations of Tm, Yb, and Eu using ion implantation and post annealing. High ion fluences lead to morphology changes due to sputtering; however, freestanding nanowires become less damaged compared to those attached to substrates. No other phases like rare earth (RE) oxides were detected, no amorphization occurs in any sample, and homogeneous doping with the desired concentrations was achieved. Photoluminescence measurements demonstrate the optical activation of trivalent RE-elements and the emission of the characteristic intra-4f-luminescence of the respective RE atoms, which could be assigned according to the Dieke-diagram. An increasing RE concentration results into decreasing luminescence intensity caused by energy transfer mechanisms to non-radiative remaining implantation defect sites. Furthermore, low thermal quenching was observed due to the considerable wide band gap of ZnO.

scholarly journals Solid solubility of rare earth elements (Nd, Eu, Tb) in In2−xSnxO3 – effect on electrical conductivity and optical properties

2014 ◽  
Vol 43 (25) ◽  
pp. 9620-9632 ◽  
Author(s):  
T. O. L. Sunde ◽  
M. Lindgren ◽  
T. O. Mason ◽  
M.-A. Einarsrud ◽  
T. Grande
Keyword(s):  
Electrical Conductivity ◽  
Optical Properties ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Band Gap ◽  
Solid Solubility ◽  
Wide Band ◽  
Wide Band Gap ◽  
Recent Interest ◽  
Wide Band Gap Semiconductors

Wide band-gap semiconductors doped with luminescent rare earth elements (REEs) have attracted recent interest due to their unique optical properties.

Understanding the quenching nature of Mn4+ in wide band gap inorganic compounds: design principles for Mn4+ phosphors with higher efficiency

2018 ◽  
Vol 20 (25) ◽  
pp. 16992-16999 ◽  
Author(s):  
Lei Wang ◽  
Zhaoxiang Dai ◽  
Rulong Zhou ◽  
Bingyan Qu ◽  
Xiao Cheng Zeng
Keyword(s):  
Rare Earth ◽  
Band Gap ◽  
Rare Earth Element ◽  
Earth Element ◽  
Inorganic Compounds ◽  
Wide Band ◽  
Wide Band Gap ◽  
Red Phosphors ◽  
Quenching Mechanisms ◽  
Comprehensive Study

A comprehensive study on the underlying quenching mechanisms of the non-rare-earth element Mn4+ doped red phosphors.

Nanostructured A2(RE,B)O6 (A = Ba, Sr; RE = Rare-Earth; B = Sb, Zr) Perovskite Ceramics and their Potential Applications in Microwave and Superconducting Electronics

2012 ◽  
Vol 545 ◽  
pp. 27-31 ◽  
Author(s):  
P.R.S. Wariar ◽  
V.R. Kumar ◽  
V.M. Nair ◽  
M.M. Yusoff ◽  
R. Jose ◽  
...  
Keyword(s):  
Rare Earth ◽  
Band Gap ◽  
Wide Band ◽  
Wide Band Gap ◽  
Practical Applications ◽  
Ceramic Superconductors ◽  
Low Dielectric ◽  
Potential Applications ◽  
Wide Band Gap Semiconductors ◽  
Perovskite Lattice

A group of perovskites with general formula A2(RE,B)O6(A=Ba, Sr; RE=Rare-Earth; B=Sb, Zr) were synthesized as nanocrystals owing to the enhanced specific surface area that nanomaterials posses. These perovskites are characterized by varied crystal structure depends on the relative sizes of the cations occupying the A and B sites of the perovskite lattice. The new materials were either insulators or semiconductors. They possess moderate dielectric constant (~30) and relatively low dielectric loss (10-4); and therefore, they could be used as substrates in microwave circuits. Some of them falls to the semiconducting range with band gap ~3.3 eV; and therefore, could be used as transparent wide band gap semiconductors. Furthermore, the new perovskites were found to be chemically stable with two mostly considered high temperature ceramic superconductors for practical applications, viz. YBa2Cu3O7-δ(YBCO) and (Bi,Pb)2Sr2Ca2Cu3Ox(BSCCO).

scholarly journals Rare-Earth Excitation Mechanism in Wide Band Gap H-VI Compounds

1993 ◽  
Vol 84 (5) ◽  
pp. 959-962 ◽  
Author(s):  
K. Karpińska ◽  
K. Świątek ◽  
M. Godlewski ◽  
L. Niinistö ◽  
M. Leskelä
Keyword(s):  
Rare Earth ◽  
Band Gap ◽  
Wide Band ◽  
Excitation Mechanism ◽  
Wide Band Gap

Rare earth oxides in zirconium dioxide: How to turn a wide band gap metal oxide into a visible light active photocatalyst

2017 ◽  
Vol 26 (2) ◽  
pp. 270-276 ◽  
Author(s):  
Chiara Gionco ◽  
Maria C. Paganini ◽  
Elio Giamello ◽  
Olga Sacco ◽  
Vincenzo Vaiano ◽  
...  
Keyword(s):  
Rare Earth ◽  
Metal Oxide ◽  
Visible Light ◽  
Band Gap ◽  
Zirconium Dioxide ◽  
Wide Band ◽  
Rare Earth Oxides ◽  
Wide Band Gap ◽  
Visible Light Active
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