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Department of Chemical Engineering and Biotechnology


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.