Exciton-polariton coupling and enhanced emission in SiC nanocrystals

Georgiy Polupan; Miguel Morales-Rodriguez

doi:10.1117/12.893926

23 September 2011 Exciton-polariton coupling and enhanced emission in SiC nanocrystals

Georgiy Polupan, Miguel Morales-Rodriguez

Proceedings Volume 8102, Nanoengineering: Fabrication, Properties, Optics, and Devices VIII; 81020T (2011) https://doi.org/10.1117/12.893926
Event: SPIE NanoScience + Engineering, 2011, San Diego, California, United States

Abstract

The paper presents the results of 6H-SiC nanocrystals (NCs) characterization using atomic force microscope (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence spectroscopy techniques. XRD study shows the investigated porous 6H-SiC layers contain inclusions of 4H-SiC and 15R-SiC polytypes. Photoluminescence study of porous SiC layers with different thicknesses and SiC NC sizes (50-250 nm) reveals the intensity stimulation of exciton related PL bands in different SiC polytypes. The intensity enhancement for exciton-related PL bands is attributed to the exciton recombination rate increasing due to the realization of exciton-polariton effects in big size SiC NCs of different polytypes (6H-PSiC with inclusions of 15R- and 4H-PSiC).

Citation Download Citation

Georgiy Polupan and Miguel Morales-Rodriguez "Exciton-polariton coupling and enhanced emission in SiC nanocrystals", Proc. SPIE 8102, Nanoengineering: Fabrication, Properties, Optics, and Devices VIII, 81020T (23 September 2011); https://doi.org/10.1117/12.893926

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