We report an interesting observation on strong enhancement in green luminescence from hybrid ZnO/multi-walled carbon nanotubes (MWCNTs). The hybrid structures were synthesized via a high temperature sintering method. The strong green emission at 510 nm has been attributed to surface defects of ZnO, originating from interactions between ZnO and the MWCNT surface, which has been confirmed by high...

By integrating silicon nanowires (∼150 nm diameter, 20 μm length) with an Ω-shaped plasmonic nanocavity, we are able to generate broadband visible luminescence, which is induced by high order hybrid nanocavity-surface plasmon modes. The nature of this super bandgap emission is explored via photoluminescence spectroscopy studies performed with variable laser excitation energies (1.959 to 2.708 e...

- Electron irradiation of silver containing zinc phosphate glass sodium gallo-phosphate Cathodoluminescence glasses Spin Resonance (ESR) Luminescence spectroscopy color center in irradiated glasses. Effect matrix structure on the photosensitivity In present work, effect electron irradiations silver-containing using a 2.5 MeV beam has been explored by and luminescence spectroscopy. The process i...

The paper presents regularities that demonstrate the effect of passivating ligands formation thioglycolic acid and L-cysteine (TGA, L-Cys) dielectric shells (SiO 2 ) on Ag S nanocrystals interface photostability their IR luminescence. Using FTIR absorption spectroscopy, interaction manifestations molecules TGA L-Cys with nanocrystals, as well SiO shell due to process replacing organic a silica ...

Peripheral magnesium complexes of methyl pheophorbides a and b, bacteriomethyl pheophorbide a, bacteriopheophytin a, and protopheophytin a have been prepared and characterized by UV-vis, IR, ‘H N M R , and luminescence spectroscopy. In these compounds, Mg is bound to the peripheral p-keto ester system present in most chlorophylls rather than to the central tetrapyrrole cavity as in the chloroph...

Capacitive photocurrent spectroscopy is used to probe the electronic states of grapheneoxide, and reduced graphene-oxide. Three peaks are observed whose intensities scale with the oxygen coverage. The energy of these peaks correlate with the luminescence spectra reported for graphene-oxide. Using a fitting procedure, the density of states for graphene oxide is extracted from the data. It consis...

In this research work, we report a simple method called reflux condensation method for synthesizing Co3O4 nanoparticles using cheap chemicals such as, cobalt acetate (precursor salt), sodium monododecyl sulphate - SDS (surfactant) and N, N - Dimethylformamide - DMF (solvent). The prepared materials were heat treated at 200, 400, 600 and 800 oC for each 2 h to get phase pure product. The calcine...

The synthesis of a new nonacoordinating ligand based on an AMPED (6-amino-6-methylperhydro-1,4-diazepine) scaffold functionalized by three picolinate (6-carboxy-2-methylpyridine) arms is described. Coordination of lanthanide cations (Ln = Eu and Tb) was investigated by spectrophotometric titrations monitored by UV-Vis absorption and steady-state emission spectroscopy, showing the formation of [...