Photoluminescence Studies
Photoluminescence Studies of (Nd0.93 Sm0.07)2O3 Nanoparticles
... having a nanocrystalline structure with a hexagonal phase and P m 3 1 space group were formed with lattice parameters a=b=3.8348Å, c=6.0031Å. These parameters were refined using CELREF software and the cell parameters ...
6
Photoluminescence studies of a perceived white light emission from a monolithic InGaN/GaN quantum well structure
... by photoluminescence studies white light emission from a monolithic InGaN/GaN single quantum well structure grown by metal organic chemical vapour ...the photoluminescence is deeply ...
7
Ultrafast Time Resolved Photoluminescence Studies of GaAs
... The time resolution of these pump/probe techniques is directly related to the width of the optical pulses.43 Figure L7b shows a pulse/sample technique, which uses one pulse to excite the[r] ...
228
Time resolved photoluminescence studies of annealed 1 3 μm GaInNAsSb quantum wells
... defects that act as new centers of nonradiative recom- bination that degrade the optical quality of the QW. This conclusion is consistent with our room-tempe- rature TRPL studies for this set of samples [17]. It ...
5
THERMOLUMINESCENCE AND PHOTOLUMINESCENCE STUDIES IN SWIFT HEAVY ION IRRADIATED NANOCRYSTALLINE ALUMINUM OXIDE
... morphology studies by Atomic force microscopy show mean surface roughness of ...strong Photoluminescence (PL) emission with peak at 442 nm along with shoulder at 420 nm is observed when the samples are ...
5
Structural and photoluminescence studies on catalytic growth of silicon/zinc oxide heterostructure nanowires
... several studies using different tech- niques in regards to the synthesis of the heterostructured Si/ZnO core-shell NWs and hierarchical NWs ...the studies focused on the top- down method to fabricate Si NW ...
8
Photoluminescence Studies of In0.5Ga0.5As/GaAs quantum dots
... The low temperature photoluminescence (PL) spectrum of the Ino.sGao:As quantum dots surrounded by GaAs exhibit an emission peak at 1.137 to 1.182eV and a narrow linewidth (FWHM).. The PL[r] ...
5
Structural, Morphological and Photoluminescence Studies of As-prepared and Annealed Te 90-x Se 10 Cu Chalcogenides
... unchanged. Photoluminescence spectra show that emission is spread in the violet and red regions for as- prepared samples with the undoped sample showing highest PL ...
6
Photoluminescence Studies of H 2O Treated Chemically Synthesized ZnO Nanostructures
... The nanosized ZnO synthesized in aqueous medium was dispersed in PVA matrix and the corresponding photoluminescence spectra were obtained using the excitation wavelength of 325nm which is shown in figure-2. Due to ...
6
Photoluminescence Studies of ZnO, ZnO:Eu and ZnO:Eu Nanoparticles Covered with Y2O3 Matrix
... X-ray diffraction studies were carried out using a Philips powder X-ray diffractometer (model PW 1071) with Ni filtered Cu-K α radiation. The lattice parameters were calculated from the least square fitting of the ...
10
Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous silicon
... trated HCL to dissolve the gold. It was stirred using the hot plate magnetic stirrer at 20°C for 15 min. The solvent then was used in electrochemical deposition process using direct current at different current densities ...
6
Usage of Optoelectronic devices in Photoluminescence studies of CaWO4: Ce Phosphor
... From literature survey it is observed that nano sized inorganic low-dimensional systems exhibit a wide range of unique optical properties. Luminescent materials in the form of nanobelt, nanoparticles, nanorods, ...
7
Tunable Nanostructures and Crystal Structures in Titanium Oxide Films
... C. Photoluminescence studies, Raman spectral results, and X-ray diffraction data also furnish evidence in support of the observed solid state phase transformations in TiO 2 ...
9
Structural, Optical, Mechanical Studies of Guanidine Tartarate Single Crystals
... absorption studies on this crystal reveal that the cutoff region is around 235 ...eV. Photoluminescence studies show that the material emits violet ...
7
Optical Properties of Lead Doped Titanium Oxide of Thin Films Prepared by Sol Gel Method at Low Temperature
... The photoluminescence (PL) measurements were carried out using the Jobin Yvon-Spex make Spectrofluorometer (Fluorolog version-3; Model FL3-11) with 450W high-pressure xenon arc lamp as excitation ...
9
Quenching Photoluminescence of Eu(III) by Cu(II) in ZnO:Eu3++Cu2+ Compounds by Solution Combustion Method
... temperature photoluminescence spectra (PL) of the Eu 3+ doped ZnO without the Cu 2+ ion dopant and of the Cu 2+ +Eu 3+ doped ZnO (ZnO:Cu 2+ +Eu 3+ ) nanocrystals as a function of the Cu 2+ ion concentration in Wt% ...
8
Photoluminescence (PL) and Thermoluminescence (TL) studies of y irradiated CaAl2O4: Eu2+ phosphor synthesized by combustion technique
... activator ion possess safer, chemically stable and intense photoluminescence (PL) in visible region [1,2], compared to the conventional sulfide-based phosphors. These properties makes them use in many ...
6
Photoluminescence of a quantum dot molecule
... stationary photoluminescence from a quantum-dot molecule composed of two spherical quantum dots whose electronic subsystems are resonantly coupled via the Coulomb ...of photoluminescence peaks with ...
8
Photoluminescence of EuGa2Se4:Nd3+
... It is interesting to note that the pumping at room temperature into matrix absorption band is more effective one for excitation of high-situated levels of Nd3+, at 77 K the pumping is ef[r] ...
5
A simulation study of photoluminescence silicon nanowires
... Recently, the discovery of room temperature visible photoluminescence (PL) from silicon nanostructures has attracted an attentions toward the quantum mechanical nature of this phenomenon (Canham, 1990). The ...
31