研究领域

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Dr Joyce’s research aims to create nanoscale and low-dimensional components for future electronic and optoelectronic devices. These components include low-dimensional materials such as graphene, monolayer transition metal dichalcogenides (e.g. monolayer MoS2) and semiconductor nanowires. Particularly promising are semiconductor nanowires made out of III–V materials, such as GaAs, InAs, InP and AlGaAs. These nanowires typically feature diameters between 10 to 100 nm and lengths of several microns. The excellent electronic properties of these III–V materials, coupled with the tiny dimensions of the nanowire geometry, make III–V nanowires outstanding candidates for future electronic and optoelectronic devices, including light emitting diodes, lasers and solar cells. If nanoscale materials are to be useful in future devices, we need to be able (i) to fabricate them controllably and reproducibly using techniques such as chemical vapour deposition and molecular beam epitaxy, (ii) to measure and control their fundamental optical and electronic properties, and (iii) to develop processing techniques to make functional devices. Dr Joyce’s research endeavours to grow and characterise nanowires and other low-dimensional materials, and implement novel devices, particularly solar cell devices, based on these materials