We are interested in organic electronics materials and devices !
Field effect transistors (FETs) are critical ingredients in modern microelectronics. They are being used in amplifiers and nearly for all digital combinational logic circuits because of their versatility and low power consumption. Thin film transistors (TFTs) are special FETs in which the active, semiconducting material (usually silicon) is grown as a very thin film on an insulating substrate. They are used in electronic applications that require a large area, e.g., liquid crystal display monitors. Organic thin film transistors (OTFTs) make use of semiconducting organic molecules or polymers as the active materials to accomplish functions analogous to inorganic TFTs. They have clear novelty in comparison to Si-based TFT because OTFT can be grown on flexible substrates --- hence a realization of plastic/flexible electronic devices. Their fabrication process is less complex. The goal of this project is to use OTFTs to evaluate the carrier mobility (and hence the conductivity) and investigate the physics of charge transport in organic semiconductors.
ORGANIC THIN FILM TRANSISTOR
Most of our projects are designed to measure conductivities and advance the understanding of mechanisms of conductivity in organic electronic materials. Besides conductivities, we are also interested in forming efficient charge injection contacts to organics.