A POSSIBLE PHASE-TRANSITION IN METALLIC POLYTHIOPHENE AND POLY(3-METHYLTHIOPHENE) AT LOW-TEMPERATURE

被引:11
作者
MASUBUCHI, S
KAZAMA, S
机构
[1] Department of Physics, Chuo University, Bunkyo-ku, Tokyo
关键词
D O I
10.1016/0379-6779(94)02466-C
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have made an experimental study on the transport properties in as-grown polythiophene and poly(3-methylthiophene) films doped with PF6.. Precise measurements were made of the four-terminal DC resistivity, the Voltage-Shorted-Compaction resistivity and the absolute thermoelectric power between 1.6-300K with an aim to abstract the transport properties inherent to the crystallized regions of polymeric materials. The results are strongly indicative of the occurrence of a metal-insulator transition within the crystallized (metallic) regions at low temperatures. The difference in the transport property of bulk materials is understood by their different transition temperatures.
引用
收藏
页码:315 / 316
页数:2
相关论文
共 5 条
  • [1] METALLIC TEMPERATURE-DEPENDENCE OF CONDUCTIVITY IN HEAVILY-DOPED POLYACETYLENE
    MASUBUCHI, S
    MIZOGUCHI, K
    MIZUNO, K
    KUME, K
    SHIRAKAWA, H
    [J]. SYNTHETIC METALS, 1987, 22 (01) : 41 - 52
  • [2] MASUBUCHI S, 1993, SYNTHETIC MET, V55, P4962
  • [3] PRESSURE AND MAGNETIC-FIELD DEPENDENCE OF THE LOW-TEMPERATURE RESISTIVITY OF PF6-DOPED POLYPYRROLE
    REGHU, M
    YOON, CO
    MOSES, D
    HEEGER, AJ
    [J]. SYNTHETIC METALS, 1994, 64 (01) : 53 - 57
  • [4] SHIRAKAWA H, 1977, J C S CHEM COMMUN, V578
  • [5] 3 DIMENSIONALITY OF METALLIC STATES IN CONDUCTING POLYMERS - POLYANILINE
    WANG, ZH
    LI, C
    SCHERR, EM
    MACDIARMID, AG
    EPSTEIN, AJ
    [J]. PHYSICAL REVIEW LETTERS, 1991, 66 (13) : 1745 - 1748