One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu0.43+ and -NaGdF4: Tb3+ nanocrystals

	One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu0.43+ and -NaGdF4: Tb3+ nanocrystals
	Liu, C.; J. Zhang and Y. Luo
	2015
发表期刊	RSC Advances
卷号	5 期号:22
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+ 7F0 5D2 464 nm zero phonon line (ZPL), were observed in the excitation spectra monitoring Eu3+ 5D0 7F2 at 613 nm, which resulted from Mo-O and O-Mo-O local mode vibrations, respectively. The phonon densities of states of () were determined from the profile of PSB. The temperature dependence of MR rate for the Tb3+ 5D3 5D4 in -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. 2015 The Royal Society of Chemistry.
文章类型	期刊
收录类别	EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55898
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.,J. Zhang and Y. Luo. One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu0.43+ and -NaGdF4: Tb3+ nanocrystals[J]. RSC Advances,2015,5(22).
APA	Liu, C.,&J. Zhang and Y. Luo.(2015).One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu0.43+ and -NaGdF4: Tb3+ nanocrystals.RSC Advances,5(22).
MLA	Liu, C.,et al."One-phonon sideband and multiphonon relaxation in La1.6Mo2O9: Eu0.43+ and -NaGdF4: Tb3+ nanocrystals".RSC Advances 5.22(2015).

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