Munira Raja

Liverpool University, UK


Munira Raja graduated with a B.Eng. Honours Degree in Computer and Microelectronic Systems, at the University of Liverpool in 1999. She proceeded to do her PhD in Organic Electronics, where she studied the effects of doping novel conjugated polymers for use in electronic devices such as Schottky diodes and thin-film transistors. The research was funded by EPSRC, under the Carbon-Based Electronics (CBE) project. From 2004, Dr Raja worked as a research associate on a European project ‘PolyApply’, funded under the FP6 EU programme, which had interests in generating smart organic devices that integrate a range of electronic capabilities. For the demonstrator, the consortium presented a functional Radio Frequency Identification (RFID) tag with organic devices. In 2008, Dr Raja was appointed a lectureship in the Department of EEE, and currently leads the Organic Electronics Research group. Her interest includes development of low-cost flexible organic circuits, for use as key functional blocks in various mixed signal applications including smart sensor (SIMS FP7 EU project), display (Case Award with Merck Chemicals Ltd) and RFID tag (PolyApply project). In 2013, SIMS was awarded the best publicly funded demonstrator at the LOPEC/OEA competition held in Munich. Dr Raja is currently also the Programme Committee member of the International Conference on Organic Electronics (ICOE) and an affiliated member of the Observatoire des Micro et Nano Technologies (OMNT). She is a Chartered Engineer (IET) and a senior member of the IEEE societies.


Development of organic circuitry for low-cost smart sensor systems

Organic Electronics continue to evolve steadily, particularly in the development of simple digital circuits. Efforts have also begun in the development of analog counterpart, for use as key functional blocks in flexible low-cost smart sensor systems. This however has been challenging due to the complexity of the fabrication processes, owing to the circuit architecture adapted. In addition, the outputs tend to be low due to the low mobility of the charge carriers. And with solution-processed layers, the possible variability of the parameters can hinder the overall circuit performance. In this talk, we propose novel approaches in the design of an organic analog circuit such as an Operational amplifier (Op-amp), for integration in a smart sensor technology. The circuit designs are simulated using appropriate organic–based models and parameters, which reflect the conductance and capacitances of an OTFT. We propose methods to tackle and investigate the various processing issues addressed above. And the effect of variability of the parameters on the overall circuit performance are also discussed, and finally the functionality of the organic circuit in sensing applications is demonstrated.