One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu-0.4(3+) and beta-NaGdF4: Tb3+ nanocrystals

	One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu-0.4(3+) and beta-NaGdF4: Tb3+ nanocrystals
	Liu, C. X.; J. S. Zhang and Y. S. Luo
	2015
发表期刊	Rsc Advances
卷号	5 期号:22 页码:17300-17307
摘要	The experimental studies of one-phonon sideband (PSB) and multiphonon relaxation (MR), involving a large energy gap (5800 cm(-1)) crossover from bulk to a nanocrystal (NC) system are reported. Two one-phonon sidebands, PSB1 = 449 nm and PSB2 = 429 nm associated with the Eu3+ F-7(0) --> D-5(2) 464 nm zero phonon line (ZPL), were observed in the excitation spectra monitoring Eu3+ D-5(0) --> F-7(2) at 613 nm, which resulted from Mo-O and O-Mo-O local mode vibrations, respectively. The phonon densities of states of rho(omega) were determined from the profile of PSB. The temperature dependence of MR rate for the Tb3+ D-5(3) --> D-5(4) in beta-NaGdF4:Tb3+ NCs was analyzed in a single-frequency approximation of the phonon spectrum in the framework of the nonlinear theory of MR. The experimental data were in good agreement with the theoretical curves within the range of 12 K to 312 K. It is concluded that the MR occurs predominantly via high-energy optical phonons.
收录类别	SCI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55331
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu, C. X.,J. S. Zhang and Y. S. Luo. One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu-0.4(3+) and beta-NaGdF4: Tb3+ nanocrystals[J]. Rsc Advances,2015,5(22):17300-17307.
APA	Liu, C. X.,&J. S. Zhang and Y. S. Luo.(2015).One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu-0.4(3+) and beta-NaGdF4: Tb3+ nanocrystals.Rsc Advances,5(22),17300-17307.
MLA	Liu, C. X.,et al."One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu-0.4(3+) and beta-NaGdF4: Tb3+ nanocrystals".Rsc Advances 5.22(2015):17300-17307.

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