Lily Shepherd and Rachel Clarke join the group as 4th year MPhys students. They will be working on developing fast techniques for looking at homogeneity in photovoltaic cells, extending the work done over the summer by Edoardo Altamura.
A welcome to Hoyeon Choi, who joins the group as a PhD student from the Advanced Photonics Research Institute at the Gwangju Institute of Science and Technology.
Hoyeon is co-supervised by Wendy Flavell, and will focus on the role of morphology on energy dynamics in novel photovoltaic materials.
Over Summer 2018, Edoardo Altamura has worked as a Rank Prize Optoelectronics Intern on developing techniques for photovoltaic characterisation. He describes his research:
Photovoltaic energy proved to play a decisive role in a variety of areas, from everyday life power consumption to space satellites. Assessing the efficiency of devices capable of producing such energy is crucial for exploiting their properties at maximum performance, and even seeking new technologies for pushing them beyond the current standards.
The focus of my internship was on a particular technique for measuring the energy-production efficiency across solar cells, in order to study how manufacturing defects or other forms of impurities affect the overall performance of the device. Using the results obtained by previous MPhys students, I started developing a system capable of projecting random light patterns and reconstructing the efficiency map using Compressed Sensing algorithms.
Such research has been a great opportunity to learn about defects in semicondutor devices, as well as methods for probing them. Moreover, the effort dedicated into optimising custom software and ensuring its scalability gives me reasons to hope for further development of this project, which may result in some useful applications in semiconductor and solar energy industry.
Thanks again to Edoardo for all of his work over the summer!
Both Stefan and Arturo will present at Photon 2018 in Aston, UK (September 3rd-6th, 2018).
Stefan presented a poster on “Time and Spectrally-Resolved Microscopy of GaAsP-GaAs core-shell Quantum Well Lasers“, describing some recent work with collaborators in the group of Prof. Huiyun Liu at University College London.
Arturo presented a talk on “Nanolaser optimization through statistical optoelectronic analysis“. This work, done in collaboration with the EME group at the Australian National University, describes his recent work on all optical high throughput techniques for nanolaser optimization.