Ultrafast Carrier Dynamics and Hot Electron Extraction in Tetrapod-Shaped CdSe Nanocrystals

	Ultrafast Carrier Dynamics and Hot Electron Extraction in Tetrapod-Shaped CdSe Nanocrystals
	Jing, P. T.; W. Y. Ji; X. Yuan; S. N. Qu; R. G. Xie; M. Ikezawa; J. L. Zhao; H. B. Li and Y. Masumoto
	2015
发表期刊	Acs Applied Materials & Interfaces
卷号	7 期号:15 页码:7938-7944
摘要	The ultrafast carrier dynamics and hot electron extraction in. tetrapod-shaped CdSe nanocrystals was studied by femtosecond transient absorption (TA) spectroscopy. The carriers relaxation process from the, higher electronic states (CB2, CB3(2), and CB4) to the lowest electronic state (CB1) was demonstrated to have a time constant of 1.04 ps, resulting from the, spatial electron transfer from arms to, a core. The lowest electronic state in the central core exhibited a long decay time of 5.07 us in agreement with the reported theoretical calculation. The state filling mechanism And Coulomb blockade effect in the CdSe tetrapod were clearly observed in the pump-fluence-dependent transient absorption spectra. Hot electrons were transferred from arm states into the electron acceptor molecules before relaxation into core states.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55296
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Jing, P. T.,W. Y. Ji,X. Yuan,et al. Ultrafast Carrier Dynamics and Hot Electron Extraction in Tetrapod-Shaped CdSe Nanocrystals[J]. Acs Applied Materials & Interfaces,2015,7(15):7938-7944.
APA	Jing, P. T..,W. Y. Ji.,X. Yuan.,S. N. Qu.,R. G. Xie.,...&H. B. Li and Y. Masumoto.(2015).Ultrafast Carrier Dynamics and Hot Electron Extraction in Tetrapod-Shaped CdSe Nanocrystals.Acs Applied Materials & Interfaces,7(15),7938-7944.
MLA	Jing, P. T.,et al."Ultrafast Carrier Dynamics and Hot Electron Extraction in Tetrapod-Shaped CdSe Nanocrystals".Acs Applied Materials & Interfaces 7.15(2015):7938-7944.

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