Polymers are widely used in electrical and electronic applications and also play a very important role in human life. Our body is made of lot of polymers, like Proteins, enzymes, etc. They are substances whose molecules have high molar masses and are composed of a large number of repeating units. Other naturally occurring polymers like wood, rubber, leather and silk are serving the humankind for many centuries now. Today’s development of polymeric electroluminescent diodes for flat panel displays offers many advantages, including their versatility for fabrication, flexibility, low operating voltage, and the ease with which color tuning of light emission can be achieved. It has different applications such as antistatic coating of polymers and glass, high conductive shell, organic light emitting diode displays, nano-fiber electrodes for unit stimulation, solar cells, cathode material in electrolytic capacitors, printing wiring panels, textile fibers with colour varying properties, transparent electrodes for thick-film electroluminescence, source gate and drain in the quickly developing organic semi-conductors field. One of the applications of polymer is to use in the fabrication of light emitting diodes and the one which is produced from the organic polymer is more advantageous over the inorganic one.