Abstract
The local surface plasmon effects of colloidal cadmium selenide (CdSe) quantum dots (QDs) were observed at a low temperature (approximatel5 K). As the wavelength between the CdSe QDs and metals is precisely tuned, the enhancement effects of CdSe photoluminescence (PL) significantly increase because of the increased coupling effects between the plasmonic fields of the metal surfaces of Au and Ag and the exciton stateof a single CdSe QD. The PL enhancement effect of Au was observed to be approximately six times higher than that of Ag because of enhancecoupling. This result demonstrates the importance of wavelength matching in maximizing the surface plasmon effects and achieving enhancePL in various device applications.
| Original language | English |
|---|---|
| Pages (from-to) | 38-40 |
| Number of pages | 3 |
| Journal | Applied Science and Convergence Technology |
| Volume | 32 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2023.03 |
Keywords
- Colloidal cadmium selenide quantum dots
- Gold layers
- Local surface plasmon effect
- Photoluminescence enhancement
Quacquarelli Symonds(QS) Subject Topics
- Materials Science
- Engineering - Electrical & Electronic
- Engineering - Petroleum
- Chemistry
- Physics & Astronomy
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