An Investigation on Painting Polymer with Light Emission Ability on a Substrate and Three Means to Enhance the Light Emission to Fabricate New Display Devices

In this paper we report on the ways to improve the light emission intensity and photoluminescence (PL) properties of poly(p-phenylene vinylene), PPV, based materials by means of doping, copolymerization and also by the use of a vacuum/inert system. We doped the polymer with iron via utilization of the laser ablation technique. Using this method, different amounts of iron were incorporated to the polymer when the laser source was used for the periods of 60 and 120 s. The improvement of PL intensity was experienced for 60 s of doping compared with undoped polymer. We also experienced improvement in PL properties of PPV based materials when 2-methoxy-5-(2'-ethylhexytoxy)-p-phenylenevinylene (MEH), 2,5-bis(chloromethyl)-methoxy-4-(2-cyclo-hexylelhyl-oxy)benzene (MCHE)-PPV copolymer was used. A 1:1 ratio of MEH-PPV and MCHE-PPV was found to be the best ratio for an optimum PL intensity for this copolymer. We also pointed out that the use of vacuum and inert environment is crucially important in improvement of the tight emitted from the polymer. In the final step of this investigation a computer algorithm was used to classify the copolymers from doped polymers, which was carried out with very accurate predictions of the different classes of the polymers under study