Quasi-one dimensional Er3+–Yb3+ codoped single-crystal MoO3 ribbons: Synthesis, characterization and up-conversion luminescence
✍ Scribed by Bin Dong; Zi-An Li; Baosheng Cao; Naisen Yu; Mengtao Sun
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 692 KB
- Volume
- 284
- Category
- Article
- ISSN
- 0030-4018
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✦ Synopsis
The quasi-one dimensional (Q1D) Er 3+ -Yb 3+ codoped single-crystal MoO 3 ribbons with width range from 1 to 5 μm, and maximum length about 30 μm have been synthesized by the vapor transport method. The samples were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscope, and luminescence spectra. By a 975 nm laser diode (LD) as excitation source, the blue, green and red emission bands centered at about 408, 532, 553 and 657 nm were detected, which attributed to the 2 H 9/2 → 4 I 15/2 , 2 H 11/2 , 4 S 3/2 → 4 I 15/2 and 4 F 9/2 → 4 I 15/2 transitions of Er 3+ , respectively. The three-, and two-photon process was responsible for the blue, green and red up-conversion emissions mechanism for the Q1D Er 3+ -Yb 3+ codoped single-crystal MoO 3 ribbons, respectively. The results suggested that the Q1D Er 3+ -Yb 3+ codoped single-crystal MoO 3 ribbons will have potential applications in remote bio-imaging and surface enhanced Raman scattering.