Pelayo García de Arquer, F.; Beck, Fiona J.; Bernechea, María; Konstantatos, Gerasimos
We report broadband responsivity enhancement in PbS colloidal quantum dot (CQDs)
photoconductive photodetectors due to absorption increase offered by a plasmonic scattering layer
of Ag metal nanoparticles. Responsivity enhancements are observed in the near infrared with a
maximum 2.4-fold increase near the absorption band edge of 1 lm for 400 nm thick devices.
Additionally, we study the effect of the mode structure on the efficiency of light trapping provided
by random nanoparticle...[Show more]
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