AI Article Synopsis
- The study investigates the photoluminescence of defect centers in individual SiO2 nanoparticles, revealing that their properties are similar to those of single dye molecules.
- Variability among the nanoparticles is significant due to different local chemical environments, shedding light on the complex behavior of single quantum emitters.
- Understanding these photoluminescence mechanisms is crucial for potential applications in white-light sources, bio-imaging, and integration with nanostructures.
Article Abstract
We present the results of a comprehensive photoluminescence study of defect centres in single SiO2 nanoparticles. We show that the photo-physical properties of the luminescent centres strongly resemble those of single dye molecules. However, these properties exhibit a large variability from particle to particle due to the different local chemical environment around each centre of each particle. This variability provides new insight into the complex photo-physics of single quantum emitters embedded into a random chemical environment. Moreover, a better understanding of the fundamental mechanism of the photoluminescence of defect centres in SiO2 structure is paramount for their application as white-light sources, non-toxic labels for bio-imaging, or for combining them with metallic and semiconductor nanostructures.
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| http://dx.doi.org/10.1039/c5cp01371b | DOI Listing |
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