Ultrafast Dynamics of Photoexcited Hot Carrier Generation and Injection in AgNWs@TiO2@GNS Nanostructures

Li, Yiwen1,2; Cheng, Jiaji3; Li, Junzi3; Delville, Marie-Helene4; Treguer-Delapierre, Mona4; He, Tingchao3; Chen, Rui2; Tang, Zikang1

2018-07-05

10.1021/acs.jpcc.8b05017

Journal of Physical Chemistry C   影响因子和分区

1932-7447

The generation and injection of hot electrons in plasmonic nanostructures have received a wide-range potential application in the next generation of ultrafast nanophotonics as well as energy harvesting, storage and conversion. In many cases, the energetic carriers with high energy beyond Fermi level are desirable for photochemical reactions due to the tremendous efficient hot electron injection. However, directly electron electron scattering lifetime observations have few reported and hot electrons generally suffer from a low generation efficiency in conventional plasmonic nanostructures. This paper reports on the fabrication of hybrid AgNWs@TiO(2)pAu core shell nanostructures and the investigation of the ultrafast dynamics of their energetic carriers based on interband and intraband excitations through transient absorption spectroscopy measurements. Finally, the different electronic transition processes are discussed in terms of ultrafast decay response, which is necessary to design proper nanostructures aimed at efficient hot electron injection.

SCI ; EI

英语

通讯

Shenzhen Science and Technology Innovation Committee[KQJSCX20170726145748464] ; Shenzhen Science and Technology Innovation Committee[JCYJ20150930160634263] ; Shenzhen Science and Technology Innovation Committee[KQTD2015071710313656]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000438178900069

AMER CHEMICAL SOC

20182405316891

Absorption spectroscopy ; Electron injection ; Electron scattering ; Electrons ; Energy harvesting ; Nanostructures ; Photochemical reactions ; Plasmonics ; Plasmons ; Titanium dioxide

Energy Conversion Issues:525.5 ; Electricity: Basic Concepts and Phenomena:701.1 ; Light/Optics:741.1 ; Nanotechnology:761 ; Inorganic Compounds:804.2 ; Solid State Physics:933

Web of Science

1.Univ Macau, Inst Appl Phys & Mat Engn, Ave Univ, Taipa, Macau, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Shenzhen Univ, Coll Phys & Energy, Shenzhen 518060, Guangdong, Peoples R China
4.Univ Bordeaux, CNRS, UMR 5026, ICMCB, 87 87 Ave Dr Albert Schweitzer, F-33608 Pessac, France

Li, Yiwen,Cheng, Jiaji,Li, Junzi,et al. Ultrafast Dynamics of Photoexcited Hot Carrier Generation and Injection in AgNWs@TiO2@GNS Nanostructures[J]. Journal of Physical Chemistry C,2018,122(26):14857-14864.

Li, Yiwen.,Cheng, Jiaji.,Li, Junzi.,Delville, Marie-Helene.,Treguer-Delapierre, Mona.,...&Tang, Zikang.(2018).Ultrafast Dynamics of Photoexcited Hot Carrier Generation and Injection in AgNWs@TiO2@GNS Nanostructures.Journal of Physical Chemistry C,122(26),14857-14864.

Li, Yiwen,et al."Ultrafast Dynamics of Photoexcited Hot Carrier Generation and Injection in AgNWs@TiO2@GNS Nanostructures".Journal of Physical Chemistry C 122.26(2018):14857-14864.