At Oxford he established and currently leads a research group specialising on semiconductor physics, photovoltaics and terahertz photonics. He has developed THz methods to study the electronic properties of nanomaterials, created new high efficiency vapour-deposited solar cells and invented novel THz emitters, modulators and receivers. His research has been recognised by a series of awards including an EPSRC Established Career Fellowship (2020), the Friedrich Wilhelm Bessel Research Award from the Alexander von Humboldt Foundation (2019), the Harrie Massey Medal from the Australian Institute of Physics (2018), and the IUMRS Somiya Award (2017).