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Updated: May 23, 2026
Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
Large array of single, site-controlled InAs quantum dots fabricated by UV-nanoimprint lithography and molecular beam
A Schramm1, J Tommila, C Strelow
1Optoelectronics Research Centre, Tampere University of Technology, FIN-33101 Tampere, Finland. andreas.schramm@tut.fi
Abstract:
We present the growth of single, site-controlled InAs quantum dots on GaAs templates using UV-nanoimprint lithography and molecular beam epitaxy. A large quantum dot array with a period of 1.5 µm was achieved. Single quantum dots were studied by steady-state and time-resolved micro-photoluminescence experiments. We obtained single exciton emission with a linewidth of 45 µeV. In time-resolved experiments, we observed decay times of about 670 ps. Our results underline the potential of nanoimprint lithography and molecular beam epitaxy to create large-scale, single quantum dot arrays.
