Abstract
In this work, photonic crystals of plasmonic/excitonic semiconductor nanocrystals (NCs) were assembled from non-thermal plasma-synthesized boron (B)-doped silicon (Si) NCs. The photonic crystals form an inverse opal structure with larger refractive index than the conventional crystals made from silica nanoparticles and are aimed at controlling light propagation via excitonic and plasmonic absorption of the B-doped Si NC as well as the photonic band gap of the photonic crystal. Furthermore, we demonstrate self-assembly of mesoscopic photonic crystal particles consisting of B-doped Si NCs with well-defined inverse opal structure via simple aerosol processing.
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Acknowledgments
The authors are grateful to Dr. Siqin He and Vivek Rawat for help in setting up the aerosol system. This work was supported primarily by the Army Office of Research under MURI Grant W911NF-12-1-0407. Part of this work was carried out in the College of Science and Engineering Characterization Facility, University of Minnesota, which has received capital equipment funding from the NSF through the UMN MRSEC program under Award Number DMR-1420013.
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Yang, J., Kramer, N.J., Hogan, C.J. et al. Self-assembly of plasmonic/excitonic silicon nanocrystals into photonic crystals. MRS Communications 5, 573–577 (2015). https://doi.org/10.1557/mrc.2015.77
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DOI: https://doi.org/10.1557/mrc.2015.77