ORGANIC ELECTRONICS
ENDING SILICON’S REIGN
Organic electronics as the name itself suggests is a field concerned with material science linked with electronic properties. It deals with the application of small molecules or polymers that show very good conductivity in designing electronic gadgets and circuit boards. Organic electronic materials are constructed from carbon based small molecules or polymers. It is very beneficial due to low cost and their electrical conductivity can be altered by varying the concentration of dopants. They have good mechanical flexibility and high thermal stability.
APPLICATIONS
1. ORGANIC LIGHT EMITTING DIODE(OLED): It is a light emitting technology, which is made up of number of organic thin films place between two conductors. When electrical energy is applied, a bright is emitted. Since they do not require a black light they are thinner emissive display and more efficient than LCD display. They have the best image quality and can be made transparent and flexible.
2.ORAGANIC SOLAR CELLS(OSC):These are made up of very thin organic materials. It mainly consists of two electrodes electron transport layer, photoactive layer and hole transport layer. In normal semiconductor based solar cells on absorption of light free charge carriers are produced which delivers electrical power. When organic cell absorbs light, a photon knocks out an electron in a polymer atom, creating vacant spaces. The electron and the hole immediately form a bonded pair called exciton. The exciton splits, electron moves recombines with hole created by another photon. This continuous movement of electron from hole to hole produces electric current.
3.ORGANIC FIELD-EFFECT TRANSISTOR(OEFT):It is a field effective transistor using organic conductor in its channel. These are prepared by vacuum evaporation of small molecules or by mechanical transfer of a peeled single crystalline organic layer onto a substrate. It is composed of three terminals namely source, drain and gate. Source contact will always be grounded. When a required high positive voltage is applied to the gate terminal of OFET, an inversion layer forms at the insulator-organic semiconductor interface, providing conducting channel between source and drain. This turns the device on.
CONCLUSION
One of the benefits of organic electrons is their low cost. They are light in weight and are mechanically very flexible. Easy chemical modifications are possible which increases conductivity. Conductive polymers are expected to play a major role in the upcoming science of molecular components and variety of application possibilities for everyday use will arise.
Name : Vandana P M
Email :vandanamanjunath11@gmail.com
College : Ramaiah Institute Of Technology
Branch : Electronics and Communication Engineering
Place :Bengaluru