Publications [#319546] of Maiken Mikkelsen

Papers Published

1. Akselrod, GM; Weidman, MC; Li, Y; Argyropoulos, C; Tisdale, WA; Mikkelsen, MH, Efficient Nanosecond Photoluminescence from Infrared PbS Quantum Dots Coupled to Plasmonic Nanoantennas, Acs Photonics, vol. 3 no. 10 (October, 2016), pp. 1741-1746, American Chemical Society (ACS) [doi]
   (last updated on 2023/06/01)

   Abstract:
   Infrared (IR) light sources with high modulation rates are critical components for on-chip optical communications. Lead-based colloidal quantum dots are promising nonepitaxial materials for use in IR light-emitting diodes, but their slow photoluminescence lifetime is a serious limitation. Here we demonstrate coupling of PbS quantum dots to colloidal plasmonic nanoantennas based on film-coupled metal nanocubes, resulting in a dramatic 1300-fold reduction in the emission lifetime from the microsecond to the nanosecond regime. This lifetime reduction is primarily due to a 1100-fold increase in the radiative decay rate owing to the high quantum yield (65%) of the antenna. The short emission lifetime is accompanied by high antenna quantum efficiency and directionality. This nonepitaxial platform points toward GHz frequency, electrically modulated, telecommunication wavelength light-emitting diodes and single-photon sources.