Abstarct: Electroluminescence (EL) is a non-thermal emission of visible light from a crystal (or a system of microcrystals) as a result of current flow or the application of an electric field. Theoritically, the EL of inorganic materials is classified into the two groups: injection EL and high field EL. The high-field EL can be further grouped into different types in terms of the phosphors (powders vs. thin film) and of the driving voltage (DC vs. AC). Due to the requirements for various applications, injection EL, (high intensity lighting-emitting diodes (LEDs), for example,) have a wide application in LCD backlighting and are entering the lighting market. Powder EL has long been used in nightlights and illumination panels since the middle of the last century. Reasonable efficiency, high stability, easy and economical fabriction method makes these devices a good choice for mass production. By using mextal nanoparticles (Cu) and nanowires (Indium), a novel ACPEL device has been developed in this thesis. The novelstructure contains a single laxyer of ZnS:Cu,Al(Cl) powder phosphor which is embedded in a ITO matrix with one surface exposed. A laxyer of conductive nanostructures directly contacts the phosphor laxyer. A highly intensified electric field can be induced in the phosphor region by the mextal nanostructures if a specific voltage is applied to the device. In the first part of our experiment, we developed an ACPEL device. A glass substarte coated with an ITO laxyer, including a BaTiO3 insulating laxyer as a dielectic (Dupont Luxprint®) was deposited on the ITO substrate by the trundling method, ZnS:Cu (approximately 10 microns in diameter) and Cu nanoparticles that sputtered on the insulating laxyer by a scalp (Mesh#400), Indium nanowires, a homemade voltage source (0-300V and 50Hz) and a LX-1108 Lutron Luxmeter was incorporated in the expriment. Several devices were fabricated by this method, show a strong and uniform optical emission intensity (130 Lux) with blue and green colours which is 50% stronger than the DREL lamps (95 Lux) at 50Hz and 220V driving voltage. Simulations of electric field by using software package (FlexPDE) show that the localized electric field can be at higher than the average field depending on the dimensions of the nanoparticles and nanowires. NCPEL (Nano Contact Powder Electroluminescent) devices have the potential for a lower operating voltage with simultaneous long lifetime and high luminance. Using smaller mextal nanostructures and thinner laxyer of them causes lower threshold voltage (Vth) and luminescent with higher intensity and uniform state. In the second part of our this paper, we studied a premade ACPEL device (DREL lamp from ROGERS Co.) by relating the ambience temperature to emission intensity of device. First, a DREL lamp was placed at different temperatures from liquid Nitrogen temperature up to 80oC.In order to investigate the effect of circumstances on the lifetimes, the DUREL lamps are studied in 90% and 16% humidity.