Synthesis and Characterization of Thin Films of Cadmium Oxide

Abstract

The Cd(C 5 F 6 HO 2 ) 2 ‚2H 2 O complex was investigated by X-ray crystallography, mass spectroscopy, 1 H NMR spectroscopy, TG-DTG thermal measurements, and infrared transmittance spectroscopy. X-ray single-crystal data show that the cadmium ion is chelated by the oxygens of the hfa anion ligand and bound to the oxygens of two cis-disposed water molecules. Deposition experiments, in a low-pressure horizontal hot-wall reactor, on optically transparent SiO 2 substrates using the above complex result in CdO films. XRD measurements provide evidence that these complexes consist of highly oriented cubic crystals. UV-vis spectra show that the transmittance of as-deposited films in the visible region is about 70%. The surface structure of the CdO films was investigated by XPS. Resistivity measurements of the CdO films suggest TCO properties.

Surface sensitive probe of the morphological and structural aspects of CdSe core–shell nanoparticles

“…3(D) shows the O(1s) core-levels for CdSe systems with precursor Cd/Se ratio varying from 0.5:1 to 3:1, respectively. The broad O(1s) peak for CdSe-0.5:1-3:1 systems has been deconvoluted into main peaks at $532 eV corresponding to TOPO, 530 and 534 eV corresponding to Se-and Cd-related oxides [26,27]. With increase in Cd/Se ratio from 0.5:1 to 2:1, XPS O1s core-level intensity of peaks at 532 eV is enhanced, thus signifying the increased contribution of TOP/TOPO groups in passivating CdSe nanocrystallites.…”

Characterization and properties of CdO nanocrystals incorporated in polyacrylamide

“…Some examples of this are: Gulino et al [10] [12].Uplane et al [13] reported the preparation of CdO thin films onto the hot glass substrate at 400˚C by spray pyrolysis of the aqueous cadmium acetate solution. Varkey and Fort [14] prepared transparent CdO thin films on glass substrate using the aqueous solution of soluble cadmium amine complexes as a precursor of CdO.…”

MOCVD Growth of Transparent Conducting Cd2SnO4 Thin Films

“…We are, however Its attractive characteristics include a straightforward, onestep aqueous synthesis under ambient conditions from commercially available starting materials, excellent volatility, as well as excellent air and thermal stability. Further advances in cadmium precursor technology by our laboratory, [24] and the complementary approaches of other groups, [25] have resulted in an increased film growth capability for discovery, synthesis, and optimization of cadmium-containing opto-electronic materials. In this contribution, we report the first growth of transparent conducting Cd 2 SnO 4 films by a MOCVD process.…”