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In this paper the size-dependence of energy relaxation, which is induced by the electron-phonon (e-ph) interactions and the electron-surface (e-s) interactions in noble metal nanoparticles, is investigated. Then based on the analysis and the derivation of the e-s coupling constant in metal nanospheres, the formula of the effective electron-phonon coupling constant Geff of hollow gold nanospheres (HGNs) is deduced. Moreover, the correctness of the formulae gets proved by contrast analyses of the calculated Geff values and experimental values obtained from literature.
Wydawca
Czasopismo
Rocznik
Tom
Strony
36--40
Opis fizyczny
Bibliogr. 13 poz., tab., wykr.
Twórcy
autor
- Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, People’s Republic of China
- College of Optoelectronics Engineering, Shenzhen University, Shenzhen 518060, People’s Republic of China
autor
- Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, People’s Republic of China
autor
- Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, People’s Republic of China
autor
- Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, People’s Republic of China
autor
- Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, People’s Republic of China
Bibliografia
- 1. W. Schrof, S. Rozouvan, E. Van Keuren, D. Horn, J. Schmitt and G. Decher, “Nonlinear optical properties of polyelectrolyte thin films containing gold nanoparticles Investigated by wavelength dispersive femtosecond degenerate four wave mixing (DFWM)”, Adv. Mater. 10, 338–341 (1998).
- 2. S. Eustis and M.A. EI−Sayed, “Why gold nanoparticles are more precious than pretty gold: Noble metal surface plasmon resonance and its enhancement of the radiative and nonradiative properties of nanocrystals of different shapes”, Chem. Soc. Rev. 35, 209–217 (2006).
- 3. Y. Kayanuma and H. Momiji, “Incomplete confinement of electrons and holes in microcrystals”, Phys. Rev. B41, 10261–10263 (1990).
- 4. R.D. Averitt, S.L. Westcott and N.J. Halas, “Ultrafast electron dynamics in gold nanoshells”, Phys. Rev. B58, 10203–10206 (1998).
- 5. A.−M. Dowgiallo, and K.L. Knappenberger, Jr, “Ultrafast electron−phonon coupling in hollow gold nanospheres”, Phys. Chem. Chem. Phys. 13, 21585–21592 (2011).
- 6. J.Z. Zhang, “Ultrafast studies of electron dynamics in semiconductor and metal colloidal nanoparticles: Effects of size and surface”, Acc. Chem. Res. 30, 423–429 (1997).
- 7. J.−Y. Bigot, V. Halte, J.−C. Merle and A. Daunois, “Electron dynamics in metallic nanoparticles”, Chem. Phys. 51, 181–203 (2000).
- 8. M.B. Mohamed, T.S. Ahmadi, S. Link, M. Braun, and M.A. EI−Sayed, “Hot electron and phonon dynamics of gold nanoparticles embedded in a gel matrix”, Chem. Phys. Lett. 343, 55–63 (2001).
- 9. C. Voisin, D. Christofilos, P.A. Loukakos, N. DelFatti, F. Vallee, J. Lerme, M. Gaudry, E. Cottanein, M. Pellarin, and M. Broyer, “Uitrafast electron−electron scattering and energy exchanges in noble−metal nanoparticles”, Phys. Rev. B69, 195416/1– 195416/13 (2004).
- 10. J.H. Hodak, A. Henglein and G.V. Hartland, “Electron−phonon coupling dynamics in very small (between 2 and 8 nm diameter) Au nanoparticles”, J. Chem. Phys. 112, 5942–5947 (2000).
- 11. E.D. Belotskii and P.M. Tomchuk, “Surface electron−phonon energy exchange in small metallic particles”, Int. J. Electron. 73, 955–957 (1992).
- 12. W.G. Ma, H.D. Wang, X. Zhang, and W. Wang, “Experiment study of the size effects on electron−phonon relaxation and electrical resistivity of polycrystalline thin gold films”, J. Appl. Phys. 108, 064308/1−064308/7 (2010).
- 13. S. Link and M.A. El−Sayed, “Shape and size−dependence of radiative, non−radiative and photothermal properties of gold nanocrystals”, Int. Rev. Phys. Chem. 19, 409–453 (2000).
Typ dokumentu
Bibliografia
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