Speaker
Description
Zinc oxide (ZnO) is a material with multiple electrical and optical properties, in this work we studied the incorporation of the Er$^{3+}$ ion into the host of ZnO synthetized by the Sol-Gel. Changes in the luminiscent properties of ZnO:Er$^{3+}$ are directly correlated with the incorporation of Er$^{3+}$ ion (0.25, 1.25, 2.25, y 3.25 mol%). The Near-Infra Red (NIR) emission of ZnO:Er$^{3+}$ was obtained excited at 980 nm with a pumping power around 370 mW, the maximum in the emission band at 1535 nm corresponding to $^4$I$_{13/2}$ $ \rightarrow$ $^4$I$_{15/2}$ transition of the Er$^{3+}$. The Stark effect is appreciate in the NIR emission of ZnO:Er$^{3+}$, the splitting of the intra-electronic levels of Er$^{3+}$ is caused by the crystalline structure associated to the ZnO. Near-infra Red photoluminescence is useful for applications in optoelectronics and solar-cell technologies, for such purposes ZnO:Er$^{3+}$ is very promising.
This work was supported by
Reference
Han, H.L. & Yang, Liwen & Liu, Y.X. & Zhang, Y.Y. & Yang, Q.B.. (2008). Up-conversion luminescence switching in Er3+-containing ZnO nanoparticles through Li+ co-doping. Optical Materials. 31. 338-341. 10.1016/j.optmat.2008.05.003.
| Keywords | Sol-gel, Near-infra Red photoluminescense, zinc oxide, erbium, crystalline structure. |
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| Author will attend | I confirm |
