| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5361931 | Applied Surface Science | 2008 | 4 Pages |
Abstract
YBO3:Eu3+/Tb3+ nanocrystalline thin films were successfully deposited onto quartz glass substrates by Pechini sol-gel dip-coating method, using rare-earth nitrates and boric acid as starting materials. The crystal structure, morphology, chemical composition and photoluminescence property of the films were investigated by X-ray diffraction (XRD), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy and fluorescence spectrophotometer. The results of XRD, AFM, XPS and FTIR revealed that the films were composed of spherical YBO3:Eu3+/Tb3+ nanocrystals with average grain size of 80Â nm. The YBO3:Eu3+ film exhibited strong orange emission at 595Â nm and red emission at 615Â nm, which were, respectively ascribed to the (5D0â7F1) and (5D0â7F2) transitions of Eu3+. The YBO3:Tb3+ film showed dominant green emission at 545Â nm due to the 5D4-7F5 transition of Tb3+.
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Authors
Hongliang Zhu, Li Zhang, Tiantai Zuo, Xiaoyun Gu, Zhengkai Wang, Luming Zhu, Kuihong Yao,