Center for Organic Electronic and Alternative Energy

Center for Organic Electronic and Alternative Energy

We focus on molecular organic electronics and nanotechology for optoelectric and clean energy applications

 

Research

Our research interests revolve around advanced organic materials that can be used in applications such as flat panel displays, solar cells, optical switches, and plastic electronics. The research involves the development of new synthetic methods and strategies, and investigations towards understanding the crucial structure-property relationships in the materials. This enables us to engineer materials at the molecular level to give optimal performance. Major materials themes are oligomers, dendrimers and porphyrins. In particular, we are interested in organic semiconducting materials that have the electronic properties similar to traditional semiconductors but the processibility and flexibility of plastics.

Recently, we have developed high Tg amorphous materials based on carbazole and triphenylamine derivatives for use as hole-transporting layer (HTL) in a organic light-emitting diodes (OLEDs). These carbazole and triphenylamine derivatives have a number of potential advantages over existing HTL materials including the device performance and thermal stability. They may also be promising in long-lifetime LED device applications and can be a potential alternative material to NPB or TPD especially for high-temperature applications in OLEDs or other organic optoelectronic devices.

Carbazole and triphenylamine-based HTL materials

A series of oligomers of thiophene, fluorene and thiophene-fluorene has been synthesized and investigated with aiming at understanding the structure-physical property relationships and developing novel molecular organic materials for organic light-emitting diodes (OLED) and organic field effect transistors (OFETs).

Our research also focuses on renewable and green energy which has been highlighted as an important target for Thai science. We interest in dye-sensitized solar cells (DSSCs) which provide a technically and economically credible alternative concept to present day p-n junction photovoltaic devices. The research involves the development of new organic dye-sensitizers possessing wide absorption range, high molar absorptivity coefficient, suitable ground- and excited-state photoelectrochemical properties and high stability in the oxidized state for such as porphyrin and perylene derivatives.

Opportunities

A research student participating in this commercially applicable work has a unique opportunity to gain a wide range of experience, from the complexities of modern organic synthesis and characterization, through to techniques used to measure the physical and electronic properties of materials. The materials developed within the research programme will be fabricated as an active layer in prototype devices and the results will lead to the development of the next generation of materials. The student will therefore gain experience in an interdisciplinary research field. The group has a good record in publishing work across a range disciplines.

collaborations

Center for Organic Photonics & Electronics (COPE), University of Queensland, Australia

National Nanotechnology Center, NANOTEC, Thailand

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