Picosecond-spectroscopy and hyperlinear photoluminescence in poly(para-phenylene)-type ladder polymer

被引:4
作者
Kranzelbinder, G
Byrne, HJ
Hallstein, S
Roth, S
Leising, G
机构
[1] MAX PLANCK INST FESTKORPERFORSCH,D-70506 STUTTGART,GERMANY
[2] GRAZ TECH UNIV,SFB ELEKTROAKTIVE STOFFE,A-8010 GRAZ,AUSTRIA
关键词
time-resolved fast spectroscopy; photoluminescence; conjugated polymers;
D O I
10.1016/S0379-6779(96)04908-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The temporal decay and the spectral evolution of the photoluminescence of poly(para-phenylene)-type ladderpolymer films are studied by temperature dependent (20K-300K) streak camera measurements. The luminescence spectrum originating from two different emitting species is composed of a broadband yellowish contribution of extrinsic nature (lambda(em)=600nm) and a spectrally sharp component in the blue-green region. On increasing the illumination to high intensities the luminescence of this latter intrinsic component (lambda(em)=492nm) is increased dramatically as a change from linear to hyperlinear behaviour is observed. The material is found to be photochemically stable and the luminescence is not limited by saturation effects even under high excitation conditions, which is essential for laser application.
引用
收藏
页码:629 / 630
页数:2
相关论文
共 6 条
  • [1] TIME-RESOLVED EXCITONIC LUMINESCENCE PROCESSES IN POLY(PHENYLENEVINYLENE)
    FURUKAWA, M
    MIZUNO, KI
    MATSUI, A
    RUGHOOPUTH, SDDV
    WALKER, WC
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1989, 58 (08) : 2976 - 2987
  • [2] Femtosecond relaxation of photoexcitations in a poly(para-phenylene)-type ladder polymer
    Graupner, W
    Leising, G
    Lanzani, G
    Nisoli, M
    DeSilvestri, S
    Scherf, U
    [J]. PHYSICAL REVIEW LETTERS, 1996, 76 (05) : 847 - 850
  • [3] Multicolour electroluminescence diodes using oligophenylene and oligophenylenevinylene multilayers
    Meghdadi, F
    Leising, G
    Fischer, W
    Stelzer, F
    [J]. SYNTHETIC METALS, 1996, 76 (1-3) : 113 - 115
  • [4] NAKAMURA, 1996, PHYS BL
  • [5] SCHERF U, 1991, MAKROMOL CHEM-RAPID, V12, P489
  • [6] Highly efficient electroluminescence of new wide band gap ladder-type poly(para-phenylenes)
    Tasch, S
    Niko, A
    Leising, G
    Scherf, U
    [J]. APPLIED PHYSICS LETTERS, 1996, 68 (08) : 1090 - 1092