Details

Autor(en) / Beteiligte

• Kumar, M. Seshu
• Ravikumar, R. V. S. S. N.
• Rao, M. C.

Titel

Structural, Morphological, аnd Photoluminescence Properties of TiO2-Doped CdO Nanocomposites Prepared by a Simple Solution Method

Ist Teil von

• Journal of applied spectroscopy, 2023-03, Vol.90 (1), p.155-159

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Pure CdO and TiO 2 -doped CdO nanocomposites with different wt.% ratios (0.1, 0.3, and 0.5 wt.%) were prepared by a simple solution method. Structural, morphological, and elemental composition of the prepared samples was undertaken by X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis, and photoluminescence. The diffraction peaks of the samples showed the cubic phase structure and the prepared nanocomposites were on the nanoscale. SEM revealed the plate-like chunks with irregular grains due to agglomeration. The particle size of the pure CdO sample was found to be 61.98 nm, whereas TiO 2 -doped CdO (0.1, 0.3, and 0.5 wt.%) exhibited 49.57, 35.41, and 31 nm. The first peak was observed at 1.90 eV in the IR-visible region and the second peak at 2.38 eV. Both the peaks correspond to CdO. Near-band-edge emission of 2.38 eV is typical for both pure and doped CdO. It can be suggested that the photo-generated electrons have been trapped in to Ti 4+ in the forbidden gap, which enhanced the deep level emission.