Dr Phoebe Pearce

CV - LinkedIn - GitHub

 

I am currently a Research Fellow funded by the Australian Research Council (ARC) Centre of Excellence in Exciton Science, based at UNSW Sydney.

Previously, I was a postdoc in the Space Photovoltaics group run by Dr. Louise Hirst in the Materials and Physics departments of the University of Cambridge (2020-2021). Before that, I was a PhD student in the Experimental Solid State (EXSS) group in the Department of Physics at Imperial College London, funded by an EPSRC CASE award sponsored by IQE plc (2016-2020).

What Iā€™m working on

  • Optical modelling using the transfer matrix method (TMM), ray tracing, and rigorous coupled wave analysis (RCWA) to investigate the effectiveness of light-trapping structures.

  • Solar cell modelling more generally; I contributed (mainly in the various optical solver modules) to the most recent version of Solcore, an integrated set of modules for solving common tasks in solar cell research, which can be used to model both single- and multi-junction devices.

What I Have Worked ON

Ultra-thin solar cells are useful for space applications due to their increased radiation tolerance compared to standard devices. I developed light-trapping approaches for ultra-thin GaAs devices and generalised structures.

SiGeSn (silicon-germanium-tin), a new material system which can be used in for instance four-junction solar cells (in collaboration with IQE plc.). My work was mainly in material characterization, using photoreflectance (PR), photoluminescence (PL) measurements and ellipsometry, developing methods to analyse data and modelling of the optical and electronic properties of the material.

Before starting my PhD, I did an MSc at Imperial about renewable energy, and wrote a thesis project about my model for the effect of feed-in tariffs for domestic PV installations in Great Britain; my paper about this was recently published in Energy Policy, and my code is on GitHub.

I did my undergraduate and MSci physics degrees at Cambridge, and for my MSci thesis project I worked in the Optoelectronics and Quantum Matter groups at the Cavendish looking at light-induced instability in mixed-halide methylammonium-lead perovskites.