Open AccessOptical properties of Pb(Mg1/3Nb2/3)O3-PbTiO3 thin films prepared by chemical solution deposition
Author(s) -
刘爱云,
孟祥建,
薛建强,
孙兰,
马建华,
汪琳,
褚君浩
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.3128
Subject(s) - materials science , thin film , sapphire , perovskite (structure) , substrate (aquarium) , analytical chemistry (journal) , chemical bath deposition , layer (electronics) , lead titanate , optics , ferroelectricity , optoelectronics , crystallography , dielectric , nanotechnology , chemistry , laser , physics , oceanography , chromatography , geology
92%Pb(Mg1/3Nb2/3)O3-8%PbTiO3 (PMNT) thin films have been prepared on Pt/Ti/SiO2/Si substrate with a LaNiO3 (LNO) buffer layer and on sapphire substrate by chemical solution deposition, respectively. X-ray diffraction analysis shows that the PMNT thin films on Pt/Ti/SiO2/Si substrate are almost pure perovskite phase with (110)-preferential orientation. The optical constants (n, k) of the PMNT thin films in the wavelength range of 2.5—12.6μm were obtained by infrared spectroscopic ellipsometry measurement. By fitting the optical transmission spectra of the PMNT thin films on sapphire substrate in the wavelength range of 200—1100nm, the optical constant (n and k) and absorption coefficient (α) were obtained. And that the bandgap energy of the PMNT thin films on sapphire substrate was found to be about 4.03eV.