Design of organic thinfilm transistor using polycyclic aromatic hydrocarbon with organic dielectrics for bio signal amplifiers

Abstract

Mounting electronics circuits on a plastic flexible substrate is pertinent for bio sensing applications due to its resilience nature minimal processing conditions lightweight and low cost Organic Field Effect Transistors OFETs have undergone significant improvements due to tremendous progress in material processing in the past few years The great potential of OFET in terms of mechanical flexibility light weight low cost and large area fabrication makes them promising candidates for novel electronic products such as sensor arrays tags and flexible displays For the realization of these applications and to improve their performance it is necessary to miniaturize OFETs to few micro meters or even less However with such aggressive scaling the device physics becomes more and more important and also complicated The proposed research work is carried out in two phases First designing an Organic Field Effect transistor with various organic materials as an active region dielectrics with various dimensions and analysing its performance Next using this newly designed OFET in Multiplier Divider Circuit push pull amplifier and Operational Transconductance Amplifier OTA Organic Field Effect Transistors OFET based amplifiers for flexible biosensor is proposed in this work To design flexible bio sensing circuits Metal Oxide Semiconductor Field Effect Transistor MOSFET with Polycyclic Hydrocarbon is a suitable choice It is a big challenge to build an organic circuit using graphene electrode due to its poor performance of N type OFET therefore it is advisable to use Pentacene as N and P type Organic semiconductors Since the hole mobility of Pentacene in OFETs is of upto 0 2 cm2 Vs which is greater than that of amorphous silicon Pentacene is considered to be the organic molecules with a high application potential among the investigated organic molecules newline