In this study, Y3Al5O12:Eu3+ red phosphors were synthesized at different temperatures using a solid state reaction method. The crystal structures, surface and optical properties of the investigated Xray diffraction (XRD), field emission scanning electron microscope (FE-SEM), photoluminescence (PL) analyses. From XRD results, structure was determined to be cubic. maximum spectra observed for pho...

Photoluminescent strips forming a Low Location Lighting (LLL) system are the primary method for marking escape routes on passenger ships. The LLL can be built as self-luminous (powered by electricity) or made series of photoluminescent materials, which glow and indicate route after loss basic emergency lighting. To ensure correct visual guidance, these must installed at specific locations in pa...

Organic photoluminescent materials are important to many applications especially for diagnosis and detection, and most of organic photoluminescent materials contain fluorophores with extended conjugated structures. Recently some of amino-containing polymers without fluorophores with extended conjugated structure are observed to be photoluminescent, and one possible cause of the photoluminescenc...

We have systematically studied the evolution of the photoluminescence(PL) tuning of porous silicon(PS) by electrochemical etching in various mixed electrolytes. The electrolytes employed as an etchants were mixtures of HF:CH3COOH:HNO3:C2H5OH solutions where the composition ratios (%) were varied from 10:1.98:0:88.02 to 10:1.98:8.4:79.62 under constant concentration of HF and CH3COOH with a tota...

using the lennard-jones (12-6) potential, a new equation of state is obtained that can predict properties of both gases and liquids relatively well. this equation of state is given as (z-a)v2=(a/v2)-b, where z is the compressibility factor, a and b are constants, and a is an adjustable parameter that depends on the temperature, volume and the nature of the fluid, and its expressions depends upo...

The assembly of nanocrystals (NCs) into three-dimensional network structures is a recently established strategy to produce macroscopic materials with nanoscopic properties. These networks can be formed by the controlled destabilization...