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 UK.
This work brings together partners from UCL, Sheffield, Warwick, Lund (Sweden), Imperial College London, the Danish Defence Research Centre and Manchester to design new materials for III-V nanowire lasers. Unlike previous quantum-well lasers based on GaAs or InP cores, here both the barrier and core material are of higher energy than the emission wavelength, dramatically reducing the cavity losses. Furthermore, the strained quatum wells are highly effective at confining carriers, which provide a new platform for the ultimate goal of room-temperature, continuously-operating nanowire lasers for on-chip applications.
Reference: Highly-Strained III-V-V Co-Axial Nanowire Quantum Wells with Strong Carrier Confinement, Zhang et al. ACS Nano (2019) doi: 10.1021/acsnano.9b01775