Room temperature emission from single defects in WO3 enhanced by plasmonic nanocrystals
| Autor: | Elif Ozceri, Sinan Balci, Enver Tarhan, Nahit Polat |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Photoluminescence Photon Materials science Physics and Astronomy (miscellaneous) business.industry Astrophysics::High Energy Astrophysical Phenomena 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Characterization (materials science) Nanocrystal Colloidal gold 0103 physical sciences Optoelectronics Density functional theory Light emission 0210 nano-technology business Plasmon |
| Zdroj: | Applied Physics Letters. 118:231105 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0048228 |
| Popis: | Room temperature light emission from optically active defect centers in two-dimensional layered materials has attracted great interest in recent years owing to the critical applications in the field of quantum information technologies. Therefore, efficient generation, detection, characterization, and manipulation of spatially localized emission from the defect centers are of crucial importance. Here, we report localized, stable, and bright room temperature photoluminescence (PL) emission from defects in WO3. In particular, the experimentally observed polarized and power dependent PL emission shows single photon characteristics. In addition, density functional theory calculations indicate that the source of the emission is most probably oxygen vacancy defects in WO3. The PL emission obtained from the localized defect centers in WO3 at room temperature has been, further, enhanced more than 20 times by using plasmonic gold nanoparticles. |
| Databáze: | OpenAIRE |
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