The performance of these systems is intimately related to the photophysical characteristics of the materials and optical spectroscopy is ideally suited to probing these materials. The next generation of solar cells based on organic and hybrid semiconductors can be solution processed over large areas leading to panels that are cheaper than current technology as well as being lighter and flexible. improving vapour penetration through film patterning.

characterisation of diffusion of organic vapours into thin films, and.identifying the nature of the quenching interaction in thin films,.My research lies in the development of novel lumines- cent sensor materials and understanding how their performance is related to their photophysical properties and physical properties. Fluorescence-based sensing is one of the most attractive solutions to this problem because it can achieve high sensitivity in a handheld device. Rapid and reliable detection of chemical threats remains one of the most pressing security challenges faced today. Our research has a strong application-focus across the three following areas. We use time-resolved spectroscopic methods such as transient absorption and transient photoluminescence to probe the photophysical properties of organic semiconductors and gain a detailed understanding of how these materials “work”. Optimising the performance of these devices poses a significant challenge, as each is the product of multiple physical processes, typically occurring on timescales ranging from femtoseconds to milliseconds. Such devices cover a wide range of applications and include solar cells, sensors, light-emitting diodes, and lasers. The development of organic semiconductors has the potential to revolutionise the design and fabrication of future optoelectronic devices. In November 2011 I was awarded an ARC DECRA fellowship and in 2016 an Advance Queensland Research Fellowship.

I completed my PhD on exciton diffusion in conjugated polymers in 2009 at the University of St Andrews before moving to The University of Queensland as a postdoctoral fellow working on the development of fluorescent dendrimers for the detection of explosives and the photophysics of organic semiconductors. Photophysics of organic semiconductors Lab websiteĬentre for Organic Photonics & Electronics About me

Dr paul e dennison