Nanowires UK Semiconductor Nanowire Meeting 2019 Patrick spoke and both Arturo and Stefan gave posters at the 2019 UK Semiconductor Nanowire Meeting, held at Corpus Christi College in Oxford. The event was chaired by Patrick and Michael Johnston (Oxford Physics), and it brought nearly 35 researchers from 10 universities together to discuss nanowire research in the
Nanowires New Paper - Highly-Strained III-V-V Co-Axial Nanowire Quantum Wells with Strong Carrier Confinement A new paper has been accepted for publication in ACS Nano. This work, led by Dr. Yunyan Zhang and Prof. Huiyun Liu at University College London, describes the growth and characterisation of quantum-well tube nanowires based on GaAs-GaAsP heterostructures. This work brings together partners from UCL, Sheffield, Warwick, Lund (Sweden)
James Kerfoot New Paper - Two-Dimensional Diffusion of Excitons in a Perylene Diimide Monolayer Quenched by a Fullerene Heterojunction James Kerfoot, supervisor Prof. Peter Beton and colleagues at the University of Nottingham have had a paper accepted in J. Phys Chem. C on exciton diffusion in monolayer organic materials in a collaboration with our Manchester group. In this new work, advanced AFM techniques are coupled to optical micro-spectroscopy to
Import 2022-12-08 21:42 New Arxiv Paper - Visible and infrared photocurrent enhancement in a graphene-silicon Schottky photodetector through surface-states and electric field Nawapong Unsuree has submitted a new paper to the Arxiv reporting on work coming from a recent collaboration between the Echtermeyer group (Manchester) and the Parkinson group. The research was conducted in the National Graphene Institute and the Photon Science Institute. Following on from recent work developing graphene-silicon Schottky photodiodes,
Compressive Sensing MPhys projects 2018 - Welcome The group welcomes four undergraduate MPhys students who will spend the semester working on their final year project: * Lily Shepherd and Rachel Clark return to work on compressive sensing applications for future photovoltaic characterization. * Jade Clarke and Eadie Weston will start a new project on open-science, looking to create 3D
Arturo Alanis New Paper - Emission Properties and Ultrafast Carrier Dynamics of CsPbCl3 Perovskite Nanocrystals Congratulations to Ruben Ahumada-Lazo for his new paper on emission properties of perovskite nanocrystals. In his new paper, published in ACS Journal of Physical Chemistry C, he used ultrafast and high-fluence optical techniques based at the Photon Science Institute to reveal the radiative and non-radiative recombination pathways in CsPbCl3 perovskite
ANU New Paper - Optical Study of p-Doping in GaAs Nanowires for Low-Threshold and High-Yield Lasing Our new work on large-scale statistical spectroscopy to optimize nanowire lasers is published today in Nano Letters. In this work, PhD student Arturo studied thousands of nanowires to identify the lowest threshold nanowire, as well as to model emission to identify the primary sources of non-radiative emission. By quickly sorting
Nanowires Presentation at ICYRAM-2018 Arturo gave an oral presentation on his work – “Nanolaser optimization through statistical optoelectronic analysis” at ICYRAM in Adelaide as part of a IOP Barber Fund supported conference trip.
Photodetector New Paper - Graphene-Silicon-On-Insulator (GSOI) Schottky Diode Photodetectors Hakan Selvi has had a paper accepted for publication in RSC Nanoscale describing SOI graphene-based photodetectors. In a collaboration between the Echtermeyer group and the Parkinson group at the University of Manchester, Hakan showed that by modifying the shape and thickness of the silicon, the electrical and optical characteristics could
Ken Crozier Visitors from Melbourne A welcome to Jasper, Vivek and Jiajun from the Crozier group at the University of Melbourne who visit our group for the week. This visit, funded through the Manchester-Melbourne linkage program, will allow the Melbourne group to use some of the microscopy facilities within the Photon Science Institute to understand
Compressive Sensing Welcome to Lily and Rachel 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.
Hoyeon Choi Welcome to Hoyeon Choi! 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.
Compressive Sensing Rank Prize Internship - Edoardo Altamura 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
Arturo Alanis Photon 2018 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
Edoardo Altamura Thanks to Edoardo Altamura! Edoardo has completed his 10 week placement in the group as an optoelectronics intern, funded by the Rank Prize funds. During his stay he has developed hardware, software, and optical approaches to use compressive sensing with low-cost equipment for characterising photovoltaic cells. Many thanks to Edoardo for his hard work!
Astrometry New Paper: Modal refractive index measurement in nanowire lasers - a correlative approach The group has had a paper accepted in the IOP journal Nano Futures entitled Modal refractive index measurement in nanowire lasers – a correlative approach. In this work, image processing and registration techniques from astronomy have been adapted to allow marker-free identification of single nanowire using multiple approaches. We have demonstrated
Nanowires Conference talk at Nanowire Week 2018 Patrick spoke at Nanowire Week 2018, on “Non-contact measurement of p-doping for high-yield room-temperature nanowire lasing”. This project, led by Arturo Alanis and carried out in collaboration with colleagues at the Australian National University, studied semiconductor nanowire ensembles to reveal correlations between doping and functional performance. Nanowire Week 2018 was
Import 2022-12-08 21:42 The Optoelectronic Materials Spectroscopy group at Manchester Physics Welcome to the OMS research group at the University of Manchester. Our group carries out research within the Photon Physics sub-group of the Department of Physics and Astronomy, based in the Photon Science Institute at the University of Manchester. We study the origin and role of inhomogeneity in novel optoelectronic
Edoardo Altamura Rank Prize Summer Studentship 2018 The group will host another 10-week summer studentship, funded through the Rank Prize Funds. The project on “Rapid, multispectral photovoltaic performance mapping using structured light illumination” will see one of our 3rd year undergraduate students Edoardo Altamura design, build and test a device for high speed characterisation. We look forward
ANU New Publication - Distinguishing cap and core contributions to the photoconductive terahertz response of single GaAs based core–shell–cap nanowire Our recent work on single-nanowire terahertz detectors has been published in a special issue of the Lithuanian Journal of Physics, celebrating the 70th birthday of Prof. Arunas Krotkus. In this work, Dr Kun Peng used single-nanowire terahertz detectors with different capping to understand the relative contribution of the core and
Lancaster University PhD Viva in Lancaster Patrick acted as external PhD examiner for Hayfaa Alradhi, a student in the group of Dr Qiandong Zhuang in the Physics Department at Lancaster University.
Bryce Dorin New Paper - Three-dimensional direct laser written graphitic electrical contacts to randomly distributed components A paper by Dr Bryce Dorin has been published in Applied Physics A, where our recently developed direct-laser-writing technique was put to use contacting randomly distributed and encapsulated components. In this work, Bryce distributed and encapsulated commercial microLEDs in a polyimide/epoxy system, and used direct laser writing to convert
Arturo Alanis UK III-V Nanowire Meeting Patrick spoke at the UK III-V nanowire meeting in Oxford on March 20th on “Big-data for nano-wires”. This meeting brought together the UK community in nanowire growth and characterisation for a one-day workshop. PhD student Arturo gave a poster on his most recent work related to nanowire statistics.
PhD examiner PhD Viva in Nottingham Patrick acted as external PhD examiner for James Kerfoot, a student in the group of Prof. Peter Beton in the School of Physics and Astronomy at the University of Nottingham.
