Raman spectra in doped cadmium oxide

Synthesis and Raman signature for the formation of CdO/MnO2 (core/shell) nanostructures

“…Recently, it has attracted the increasing attention of the scientist worldwide because of its applications in various fields such as solar cells and flat‐panel displays. It has an indirect band gap of 1.2 eV and a direct gap of 2.3 eV corresponding to Σ 3 – Γ 1 and Γ 15 – Γ 1 optical transitions, respectively. Very recently, the band gap energy and the band‐edge effective mass values of CdO were reported to be 2.16 ± 0.02 eV and (0.21 ± 0.01) m 0 , respectively, using optical measurements …”

“…Cadmium oxide belongs to the class of rocksalt structure in which first‐order Raman modes are forbidden. Schaack and Uhle had performed Raman measurements on polycrystalline CdO samples having different electron densities, and two first‐order Raman bands were observed at 404 and 354 cm −1 . The second‐order bands peaking at 970 and 780 cm −1 were described in terms of 2LO and 2TO Raman process.…”

High-pressure Raman scattering of CdO thin films grown by metal-organic vapor phase epitaxy

“…5 A first Raman study on polycrystalline CdO showed that the second-order Raman bands of CdO strongly depend on electron density. 6 Recently, we have reported Raman scattering studies on CdO epilayers exhibiting strong second-order modes that were assigned on the basis of ab initio calculations of the phonon dispersion curves. 7 Pressure-induced frequency shifts of the Raman bands strongly depend on the nature (optical or acoustic) and number of phonons involved in the Raman-scattering processes.…”

Electrosynthesis of cadmium sulfide on sulfur- or thiol-modified polycrystalline gold electrodes

“…The possibility of other species forming under these conditions (e.g., oxides as pointed out by a reviewer) can also be ruled out. For example, first-order Raman bands for CdO occur at 345 and 404 cm À1 [25] which are far removed from the signals seen in Fig. 5(a).…”