Following on from recent work developing graphene-silicon Schottky photodiodes, this new research reports the application of infrared scanning photocurrent microscopy to new devices with structured electric field, to reveal a ten-fold enhancement in photocurrent responsivity close to lateral edges.
This research paves the way towards high-sensitivity infrared photodetectors based on the graphene-silicon architecture.
Reference: “Visible and infrared photocurrent enhancement in a graphene-silicon Schottky photodetector through surface-states and electric field engineering“, Unsuree et al. arXiv:1901.10998, 2019
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 nanocrystals.
In this collaboration between the Binks group (Manchester Physics), Parkinson group (Manchester Physics), the Ducati group (Cambridge Materials), and the Humphreys Group (Cambridge Materials), a combination of synthesis, electron microscopy, photoluminescence and transient absorption are combined to reveal exciton, biexciton and trion lifetimes.