Temperature Dependent Spectroscopic Properties of Cu + and Dy 3+ Co‐Doped Phosphate Glass: Band Gap Analysis and Cu Nanocluster‐Enhanced Dy 3+ Luminescence

ChemPhysChem ◽  
2018 ◽  
Vol 20 (3) ◽  
pp. 399-404 ◽  
Author(s):  
José A. Jiménez
Keyword(s):  
Band Gap ◽  
Phosphate Glass ◽  
Gap Analysis ◽  
Spectroscopic Properties ◽  
Temperature Dependent ◽  
Glass Band ◽  
Co Doped

Effects of Ce3+ on the spectroscopic properties of transparent phosphate glass ceramics co-doped with Er3+/Yb3+

2009 ◽  
Vol 282 (10) ◽  
pp. 2045-2048 ◽  
Author(s):  
Xiaochen Yu ◽  
Feng Song ◽  
Wentao Wang ◽  
Lanjun Luo ◽  
Chengguo Ming ◽  
...  
Keyword(s):  
Phosphate Glass ◽  
Glass Ceramics ◽  
Spectroscopic Properties ◽  
Co Doped

Temperature-dependent study of GaAs1−x−y N x Bi y alloys for band-gap engineering: photoreflectance and k · p modeling

2020 ◽  
Vol 13 (9) ◽  
pp. 091005
Author(s):  
Wiktor Żuraw ◽  
Wojciech M. Linhart ◽  
Jordan Occena ◽  
Tim Jen ◽  
Jared. W. Mitchell ◽  
...  
Keyword(s):  
Band Gap ◽  
Temperature Dependent ◽  
Band Gap Engineering ◽  
Temperature Dependent Study

scholarly journals Electronic, Structural, and Optical Structure of Mono-Doped and Co-Doped (210) TiO2 Brookite Surfaces for Application in Dye-Sensitized Solar Cells—A First Principles Study

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3918
Author(s):  
Ratshilumela S. Dima ◽  
Lutendo Phuthu ◽  
Nnditshedzeni E. Maluta ◽  
Joseph K. Kirui ◽  
Rapela R. Maphanga
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Electromagnetic Spectrum ◽  
Doped Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Co Doped ◽  
Optical Structure

Titanium dioxide (TiO2) polymorphs have recently gained a lot of attention in dye-sensitized solar cells (DSSCs). The brookite polymorph, among other TiO2 polymorphs, is now becoming the focus of research in DSSC applications, despite the difficulties in obtaining it as a pure phase experimentally. The current theoretical study used different nonmetals (C, S and N) and (C-S, C-N and S-N) as dopants and co-dopants, respectively, to investigate the effects of mono-doping and co-doping on the electronic, structural, and optical structure properties of (210) TiO2 brookite surfaces, which is the most exposed surface of brookite. The results show that due to the narrowing of the band gap and the presence of impurity levels in the band gap, all mono-doped and co-doped TiO2 brookite (210) surfaces exhibit some redshift. In particular, the C-doped, and C-N co-doped TiO2 brookite (210) surfaces exhibit better absorption in the visible region of the electromagnetic spectrum in comparison to the pure, S-doped, N-doped, C-S co-doped and N-S co-doped TiO2 brookite (210) surfaces.

Spectral investigations on Eu3+ ,Sm3+ -doped and Sm3+ /Eu3+ co-doped potassium-fluoro-phosphate glass emitting intense orange-red for lighting applications

Luminescence ◽  
2017 ◽  
Vol 32 (8) ◽  
pp. 1456-1465 ◽  
Author(s):  
Kapuluri Anil Kumar ◽  
Singarapu Babu ◽  
Vasanthapalli Reddy Prasad ◽  
Samadam Damodaraiah ◽  
Yadala Chenchu Ratnakaram
Keyword(s):  
Phosphate Glass ◽  
Co Doped

Magnetic properties of undoped and Co-doped n-type β–FeSi2.5 single crystals

2002 ◽  
Vol 17 (11) ◽  
pp. 2960-2965 ◽  
Author(s):  
E. Arushanov ◽  
L. Ivanenko ◽  
D. Eckert ◽  
G. Behr ◽  
U. K. Rößler ◽  
...  
Keyword(s):  
Activation Energy ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
External Field ◽  
Single Crystals ◽  
Spin Glasses ◽  
Paramagnetic Centers ◽  
Temperature Dependent ◽  
Paramagnetic Curie Temperature ◽  
Co Doped

Results of magnetization and magnetic susceptibility measurements on undoped and Co-doped FeSi2.5 single crystals are presented. The temperature dependence of the magnetic susceptibility of the Co-doped sample in the range of 5–300 K can be explained by temperature-dependent contributions due to paramagnetic centers and the carriers excited thermally in the extrinsic conductivity region. The values of the paramagnetic Curie temperature and activation energy of the donor levels were estimated. It is also shown that the magnetic susceptibility of Co-doped samples cooled in zero external field and in a field are different. This resembles the properties of spin-glasses and indicates the presence of coupling between magnetic centers.

Wide Band Gap Al and In Co-doped ZnO Films for Near-Infrared Plasmonic Application

Plasmonics ◽  
2021 ◽  
Author(s):  
Soumya Kannoth ◽  
Packia Selvam Irulappan ◽  
Sandip Dhara ◽  
Sankara Narayanan Potty
Keyword(s):  
Band Gap ◽  
Near Infrared ◽  
Wide Band ◽  
Zno Films ◽  
Wide Band Gap ◽  
Doped Zno ◽  
Co Doped

Growth, spectroscopic properties and up-conversion of Yb, Pr co-doped CaF2 crystals

2021 ◽  
Vol 233 ◽  
pp. 117931
Author(s):  
Wudi Wang ◽  
Jie Tian ◽  
Jianshu Dong ◽  
Yanyan Xue ◽  
Donghua Hu ◽  
...  
Keyword(s):  
Spectroscopic Properties ◽  
Co Doped
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