Preparation of CaS: Ce, Sm films by sol-gel method
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CaS: Ce, Sm films were fabricated by a sol-gel method, subsequently annealed at 500 ο C for 1 hr in N2 atmosphere. The optimum mole ratio of C2H4(OH)2 to Ca2+ is 2 : 1. The XRD results show that CaS: Ce, Sm is face-centered cubic structure and the lattice constant increases 0.07 Å along all directions. Its diffraction peak has a certain broadening and moves to small angel, which is due to the surface effect of the nano particles. The AFM results show that the average grain size of CaS: Ce, Sm films is 30 nm and the grain size distribution is uniform. The strong emission peaking at 626 nm with 420 nm as excitation light corresponds to the 6 H5/2 → 4 M19/2( 6 P, 4 P)5/2 transition.
Abstract
CaS: Ce, Sm films were fabricated by a sol-gel method, subsequently annealed at 500 ο C for 1 hr in N2 atmosphere. The optimum mole ratio of C2H4(OH)2 to Ca2+ is 2 : 1. The XRD results show that CaS: Ce, Sm is face-centered cubic structure and the lattice constant increases 0.07 Å along all directions. Its diffraction peak has a certain broadening and moves to small angel, which is due to the surface effect of the nano particles. The AFM results show that the average grain size of CaS: Ce, Sm films is 30 nm and the grain size distribution is uniform. The strong emission peaking at 626 nm with 420 nm as excitation light corresponds to the 6 H5/2 → 4 M19/2( 6 P, 4 P)5/2 transition.
참고문헌 (13)
- H. Nanto, , J. Spie, 4282, pp.248~257 (2001)
- H. Zhang, , J. Opt. Soc. Am. B, 10, pp.1464~1469 (1993)
- K. Chakrabarti, , J. Appl. Phys, 65(5), pp.2021~2023 (2009)
- L. Paama, , J. Analytical. Atomic, 16, pp.1333~1336 (2001)
- W. H. Fan, , J. Appl. Phys, 85(1), pp.451~454 (1999)
- J. P. Wu, , J. Phys. D Appl. Phys, 37(2), pp.1371~1375 (2004)
- M. Sucheaa, , J. Mater. Sci. and Eng. B, 150, pp.130~134 (2008)
- A. Pique, , J. Thin Solid Films, 377, pp.803~808 (2000)
- W. Xu, , J. Non-Crys Sol, 194, pp.235~240 (1996)
- P. Y. Jia, , J. Solid State Chemistry, 178, pp.2734~2740 (2005)
- J. Llanos, , J. Alloys and Compounds, 509, pp.5295~5299 (2011)
- H. -L. Li, , J. Optical Materials, 29, pp.1138~1142 (2007)
- G. Sharma, , J. Physica B, 406, pp.2013~2017 (2011)