Optical absorbance of oriented thin films

被引:74
作者
Niko, A
Meghdadi, F
AmbroschDraxl, C
Vogl, P
Leising, G
机构
[1] GRAZ UNIV,INST THEORET PHYS,A-8010 GRAZ,AUSTRIA
[2] TECH UNIV MUNICH,WALTER SCHOTTKY INST,D-85448 GARCHING,GERMANY
关键词
optical absorbance; films;
D O I
10.1016/0379-6779(95)03447-R
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report that the optical absorbance of oriented thin films of para-hexaphenyl (PHP), produced by vacuum deposition, shows strong anisotropy effects. An explanation for the orientation dependence of optical absorption of PHP is proposed, using first principles dielectric tensor calculations. The lack of the pi-pi* absorption band in the normal UV-Vis absorption spectrum is consistent with theoretical predictions for an orthorhombic thin PHP film with oligomer chains oriented near normal to the substrate surface.
引用
收藏
页码:177 / 179
页数:3
相关论文
共 11 条
  • [1] FIRST-PRINCIPLES STUDIES OF THE STRUCTURAL AND OPTICAL-PROPERTIES OF CRYSTALLINE POLY(PARA-PHENYLENE)
    AMBROSCHDRAXL, C
    MAJEWSKI, JA
    VOGL, P
    LEISING, G
    [J]. PHYSICAL REVIEW B, 1995, 51 (15): : 9668 - 9676
  • [2] AMBROSCHDRAXL C, 1994, SYNTHETIC MET, V69, P411
  • [3] BORN M, 1988, FUNDAMENTALS OPTICS
  • [4] ORIENTATION AND MOBILITY IN ULTRATHIN OLIGOTHIOPHENE FILMS - UV-VIS, IR AND FLUORESCENCE STUDIES
    EGELHAAF, HJ
    BAUERLE, P
    RAUER, K
    HOFFMANN, V
    OELKRUG, D
    [J]. SYNTHETIC METALS, 1993, 61 (1-2) : 143 - 146
  • [5] FILZMOSER M, 1991, THESIS TU GRAZ
  • [6] ELECTROLUMINESCENCE WITH CONJUGATED POLYMERS AND OLIGOMERS
    GRAUPNER, W
    GREM, G
    MEGHDADI, F
    PAAR, C
    LEISING, G
    SCHERF, U
    MULLEN, K
    FISCHER, W
    STELZER, F
    [J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1994, 256 : 549 - 554
  • [7] ORGANIC MOLECULAR-BEAM DEPOSITION OF ALPHA-SEXITHIENYL
    HAMANO, K
    KURATA, T
    KUBOTA, S
    KOEZUKA, H
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1994, 33 (7B): : L1031 - L1034
  • [8] ELECTRONIC-TRANSITIONS IN POLARONS AND BIPOLARONS OF POLY(P-PHENYLENE) OLIGOMERS
    KHANNA, RK
    JIANG, YM
    SRINIVAS, B
    SMITHHART, CB
    WERTZ, DL
    [J]. CHEMISTRY OF MATERIALS, 1993, 5 (12) : 1792 - 1798
  • [9] TIME-RESOLVED DEGENERATE 4-WAVE-MIXING STUDIES OF SOLID-STATE POLY(P-PHENYLENE) OLIGOMERS
    MARCY, HO
    ROSKER, MJ
    WARREN, LF
    REINHARDT, BA
    SINCLAIR, M
    SEAGER, CH
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (04) : 3325 - 3333
  • [10] POLYMORPHISM AND CHARGE-TRANSPORT IN VACUUM-EVAPORATED SEXITHIOPHENE FILMS
    SERVET, B
    HOROWITZ, G
    RIES, S
    LAGORSSE, O
    ALNOT, P
    YASSAR, A
    DELOFFRE, F
    SRIVASTAVA, P
    HAJLAOUI, R
    LANG, P
    GARNIER, F
    [J]. CHEMISTRY OF MATERIALS, 1994, 6 (10) : 1809 - 1815