Electroluminescent Lamps

Structural binder A wide range of applications in electronics makes use of the plastics as a structural binder to hold active materials. For example, a plastic such as polyvinylidene fluoride is filled with an electroluminescent phosphor to form the dielectric element in electroluminescent lamps. Plastics are loaded with barium titanate and other high dielectric powders to make slugs for high K capacitors. The cores in high frequency transformers are made using iron and iron oxide powders bonded with a plastic and molded to form the magnetic core. 

C. W. Bemdt and J. R. Lakowicz, Electroluminescent lamp-based phase fluorimeter and oxygen sensor,Anal. Biochem. 201, 319-325 (1992). 

FIGURE 4.21 Electroluminescent lamp with PCTFE film. (Courtesy of Honeywell.)... 

Highly cyanoethylated celluloses with a DS of about 2.5 are soluble in polar organic solvents. Because of an unusually high dielectric constant and low dissipation factor they can be used as the resin matrix for the phosphorous and electroluminescent lamps. Cyanoethylated kraft wood pulp with a DS of only about 0.2 is used for making insulation paper for transformers. Cyanoethylated paper has also a good thermal and dimensional stability. 

Wiring, special coatings, seals, flexible hose and tubing, foams in aircraft insulation, particularly for ducts and air conditioning, electroluminescent lamps... 

Aclar 22C. Encapsulating film for clean room packaging and electroluminescent lamps... 

Uses and applications pharmaceutical blister packaging, electroluminescent lamps, liquid crystal display (LCD) panels. 

K. W. Berndt, J. R. Lakowiz "Electroluminescent Lamp-Ba.sed Phase Fluoiometer and Oxygen Sensor, Anal. Biochem. 201 (1992) 319 - 325. 

Phosphorescence and Fluorescence Many ceramics phosphoresce and fluoresce. These ceramics find applications in fluorescent lights, oscilloscope screens, television screens, electroluminescent lamps, photocopy lamps, and lasers. Lasers include tungstates, fluorides, molybdates, and garnet compositions doped with chromium, neodymium, europium, erbium, praseodymium, and so on. Ceramic phosphor is Ca5(P04)3(Cl,F) or Sr5(P04)3(Cl,F) doped with Sb and Mn. Figure 1.9 shows some configurations of fluorescent lights. 

In less sensitive applications like electroluminescent lamps and touch panels that do not require high current densities, the implementation of PEDOTrPSS as a transparent, conductive layer to substitute ITO is more straight forward. 

Electroluminescent lamps Transparent electrode Screen printing PEDOT PSS Established... 

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