Exploring spatial resolution in high-sensitivity nanogap quantum dot photodetectors.

Opt Lett

Department of Physics, University of Washington, Seattle, Washington 98195-2500, USA.

Published: August 2012

We propose a new approach to experimentally determine the spatial resolution of nanogap quantum dot (QD) photodetectors consist of solution-processed QDs. Cross talk between a pair of closely positioned QD photodetectors was measured. Devices with 200 nm spacing exhibit low crosstalk of 8.4%. A single QD photodetector also shows high sensitivity, with a lowest detectable optical intensity of 95.3 fW/μm2 achieved. The results show the potential of nanogap QD photodetectors for applications in high-density imaging/sensing arrays.

Download full-text PDF

Source
http://dx.doi.org/10.1364/OL.37.003144DOI Listing

Publication Analysis

Top Keywords

spatial resolution
8
nanogap quantum
8
quantum dot
8
dot photodetectors
8
exploring spatial
4
resolution high-sensitivity
4
high-sensitivity nanogap
4
photodetectors
4
photodetectors propose
4
propose approach
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!