INFRARED MEASUREMENTS ON CDS THIN FILMS DEPOSITED ON ALUMINIUM

被引:31
作者
PROIX, F
BALKANSKI, M
机构
[1] Laboratoire de Physique des Solides, Faculté des Sciences, Paris
来源
PHYSICA STATUS SOLIDI | 1969年 / 32卷 / 01期
关键词
D O I
10.1002/pssb.19690320114
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The reflectivity spectra of three CdS thin films (thickness 0.086, 0.33, and 0.66 μm) deposited on aluminium have been determined at room temperature. The measurements were carried out in the spectral range 180 to 740 cm−1, at an incidence of 45°, for light polarized with the electric field in the plane of incidence. A small absorption peak is observed near ωTO for the thicker samples, and a much stronger absorption peak near ωLO for all samples. The results are analysed in terms of the theory of Fuchs and Kliewer. The frequencies of the peaks and the partial widths associated with the virtual modes are in very good agreement with the theory. It is also found that the anharmonic width of the peaks is much larger than in CdS single crystals. Copyright © 1969 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
引用
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页码:119 / +
页数:1
相关论文
共 8 条
[1]   INFRARED ABSORPTION AT LONGITUDINAL OPTIC FREQUENCY IN CUBIC CRYSTAL FILMS [J].
BERREMAN, DW .
PHYSICAL REVIEW, 1963, 130 (06) :2193-&
[2]   OPTICAL PROPERTIES OF AN IONIC CRYSTAL SLAB [J].
FUCHS, R ;
KLEIWER, KL ;
PARDEE, WJ .
PHYSICAL REVIEW, 1966, 150 (02) :589-&
[3]   OPTICAL MODES OF VIBRATION IN AN IONIC CRYSTAL SLAB INCLUDING RETARDATION .2. RADIATIVE REGION [J].
KLIEWER, KL ;
FUCHS, R .
PHYSICAL REVIEW, 1966, 150 (02) :573-&
[4]  
KLIEWER KL, 1966, PHYS REV, V144, P495, DOI 10.1103/PhysRev.144.495
[5]  
LETOULLEC R, 1968, THESIS PARIS
[6]   THERMAL VIBRATIONS OF SURFACE ATOMS [J].
MACRAE, AU ;
GERMER, LH .
PHYSICAL REVIEW LETTERS, 1962, 8 (12) :489-&
[7]  
MARADUDIN AA, 1964, PHYS REV, V133, P1188
[8]   SURFACE EFFECTS ON LATTICE VIBRATIONS [J].
WALLIS, RF .
SURFACE SCIENCE, 1964, 2 :146-155