Structure of thin films of poly(3,4-ethylenedioxythiophene)

被引:364
作者
Aasmundtveit, KE [1 ]
Samuelsen, EJ
Pettersson, LAA
Inganäs, O
Johansson, T
Feidenhans, R
机构
[1] Norges Teknisk Naturvitenskaplige Univ, Inst Fys, N-7034 Trondheim, Norway
[2] Linkoping Univ, Inst Fys Och Mattek, S-58183 Linkoping, Sweden
[3] Forskningsctr Riso, DK-4000 Roskilde, Denmark
关键词
polythiophene and derivatives; X-ray diffraction; polycrystalline thin films; low-bandgap conjugated polymers;
D O I
10.1016/S0379-6779(98)00315-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Thin films (50-400 nm) of tosylate-doped poly(3,4-ethylene-dioxy-thiophene) (PEDOT) on various substrates have been studied by grazing incidence X-ray diffraction, using synchrotron radiation. The material was found to be highly anisotropic. This is correlated with a strong anisotropy observed in its optical and electronic properties. The crystalline order is limited, and evidence is found for a paracrystalline structure. A structural model is presented, which corroborates with the optical anisotropy. The effect of heating the material to 200 degrees C was studied. Unlike the situation for other substituted polythiophenes, heating PEDOT increases the crystalline order.
引用
收藏
页码:561 / 564
页数:4
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