Our research focuses on the optical and electronic properties of emerging semiconductors including metal halide perovskites, carbon allotropes and other organic semiconductors. We are particularly interested in low-cost, transformative electronics applications including photovoltaics and lighting. We use optical spectroscopy to understand material and device photophysics on a range of length and time scales, and relate these characteristics directly to local chemical, structural and morphological properties. This provides a unique platform to discover new semiconducting materials, unveil power loss mechanisms in devices, guide innovative device designs, and push device performance to the limits.
Our experimental approaches include:
- Perovskite, hybrid and organic photovoltaic and light-emitting device fabrication and characterisation
- Carbon nanotube–polymer nanohybrid synthesis and characterisation
- Time-resolved techniques including time-correlated single photon counting (TCSPC), photoinduced absorption (PIA) and transient absorption (TAS)
- Time-resolved confocal photoluminescence (PL) and electroluminescence (EL) mapping
- Steady-state photoluminescence and absorption spectroscopy
- Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) with chemical and structural analyses such as energy-dispersive X-Ray (EDX) spectroscopy and X-Ray Photoelectron Spectroscopy (XPS)
- Bulk X-Ray Diffraction (XRD), micro- and nano-XRD at synchrotron beamlines (Diamond, ALS)
Find out more on our group website.