Počet záznamů: 1

The optical absorption of metal nanoparticles deposited on ZnO films

  1. 1.
    0355357 - FZU-D 2011 RIV DE eng J - Článek v odborném periodiku
    Remeš, Zdeněk - Kromka, Alexander - Vaněček, Milan - Babchenko, Oleg - Stuchlíková, The-Ha - Červenka, Jiří - Hruška, Karel - Trung, T. Q.
    The optical absorption of metal nanoparticles deposited on ZnO films.
    Physica Status Solidi. A. Roč. 207, č. 7 (2010), s. 1722-1725 ISSN 1862-6300
    Grant CEP: GA MŠk LC510
    GRANT EU: European Commission(XE) 19670 - ATHLET
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: metal nanoparticles * morphology * optical properties * plasmons * ZnO
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 1.458, rok: 2010

    We present the optical absorption spectra of metal nanoparticles prepared by thermal annealing of the ultra thin metal films evaporated on polycrystalline ZnO films. The surface morphology, particle size and density were monitored by the atomic force microscopy (AFM) and scanning electron microscopy (SEM). The optical absorptance spectra of gold nanoparticles embedded in the non-absorbing medium can be simulated by effective medium approximation-EMA (Maxwell-Garnett model). The maximum of the localized plasmon resonance shifts to longer wavelengths (red shift) when the metal nanoparticles are more tightly packed in the matrix, whereas the size of the nanoparticles determinate the width of the resonance peak. The electron scattering cross section of Au nanoparticles observed by SEM is about two times larger than their diameter.
    Trvalý link: http://hdl.handle.net/11104/0194144