6533b831fe1ef96bd12999a9
RESEARCH PRODUCT
Systematical, experimental investigations on LiMgZ (Z= P, As, Sb) wide band gap semiconductors
Florence PorcherAndreea BeleanuQuin JuanClaudia FelserFrederick CasperMihail Mondeshkisubject
Condensed Matter - Materials ScienceMaterials scienceAcoustics and UltrasonicsBand gapNeutron diffractionDirect currentWide-bandgap semiconductorAnalytical chemistryMaterials Science (cond-mat.mtrl-sci)FOS: Physical scienceschemistry.chemical_elementCondensed Matter PhysicsSpectral lineSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsIonchemistryLithiumCrystallitedescription
This work reports on the experimental investigation of the wide band gap compounds LiMgZ (Z = P, As, Sb), which are promising candidates for opto-electronics and anode materials for Lithium batteries. The compounds crystallize in the cubic (C1_b) MgAgAs structure (space group F-43m). The polycrystalline samples were synthesized by solid state reaction methods. X-ray and neutron diffraction measurements show a homogeneous, single-phased samples. The electronic properties were studied using the direct current (DC) method. Additionally UV-VIS diffuse reflectance spectra were recorded in order to investigate the band gap nature. The measurements show that all compounds exhibit semiconducting behavior with direct band gaps of 1.0 eV to 2.3 eV depending on the Z element. A decrease of the peak widths in the static 7Li nuclear magnetic resonance (NMR) spectra with increasing temperature was observed, which can directly be related to an increase of Li ion mobility.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-08-02 |