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The iron silicide thin-films prepared by thermal diffusion of Iron nanoparticles into Si Substrate at 900°C in pure N2 environment is demonstrated to show strong room-temperature photoluminescence (PL) at 1.55 μm. The increase of iron nanoparticle concentration from 7.4 wt% to 19 wt% further effectively enhances the room-temperature PL intensity.
Phosphorpus-doped ZnO nanowires were synthesized by our newly developed nanoparticle-assisted pulsed-laser deposition (NAPLD) technique under various growth conditions. This NAPLD technique, which does not require a catalyst for crystal growth, is expected to synthesize high-quality nanostructured ZnO crystals. The luminescence properties were investigated by a photoluminescence (PL) spectroscopy,...
SiC thin films (undoped and doped with SnO2 at 1 at.%, 5 at.% and 10 at.% concentrations) are prepared using pulsed laser deposition on quartz substrates kept at room temperature. The XRD patterns show a crystalline cubic phase for the undoped and 10 at.% SnO2 doped SiC thin films while 1 at.% and 5 at.% SnO2 doped SiC thin films exhibit an amorphous nature. The formation of nanorods with a non-uniform...
We present a cost effective non-lithographic approach to fabricate metal nano-particles on an In0.2Ga0.8As quantum well (QW) structure. A highly ordered nano-hole array honeycomb structure is created using anodic oxidation of aluminium (Al). This structure provides a template for deposition of metal from which further processing yields metal nano-particles on a QW structure. We will compare how different...
The study of the THz spectral properties of DNA is facilitated by the use of integrated nanostructure-biomolecule structures since they provide: 1) a means of monitoring correlations in DNA THz spectra with molecular conformation; 2) a means of identifying specific DNA molecules in samples being characterized via THz signatures; and 3) a means of single-molecule detection. Specifically, molecular...
Si nanoparticles and nanowires have been synthesized on Si substrates by pulsed laser ablation (PLA). The Si nanowires which have a crystalline core with an amorphous shell have been grown on the Si nanoparticles with increase of the ablation time. The obvious blue shift has been observed from the photoluminescence (PL) spectrum.
Strong enhancements in the spontaneous emission intensity of dye chromophores-loaded in a printable polymer have been achieved by coupling the dye emission to surface plasmons of metallic thin films and metallic nanoparticles. The nanocomposite materials embossed by nanoimprint lithography process show good imprint properties.
A novel inorganic quantum dot based light emitting diode is fabricated by microcontact printing of a well defined-geometry of CdSe/ZnS nanoparticles films onto p type silicon substrate that acts as the hole transporting layer.
In the present work, ZnO film has been successfully grown on soda-lime glass substrate using a modified Liquid flow deposition technique (LFD). Structural and optical properties of the samples were characterized using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Analysis using X-Rays (EDAX), Fourier Transform Infrared Spectroscopy (FTIR), UV-Visible and Photoluminescence...
Critical diameter of nanowires (NWs) grown on a lattice-mismatched substrate by MOCVD was experimentally determined to be inversely dependent on mismatch. Quantization effect is observed with narrow and blue-shifted micro-photoluminescence for InP NWs on Si.
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