Open AccessINVESTIGATIONS OF THE STRUCTURAL AND CONDUCTIVE PROPERTIES OF CONDUCTING POLYMER PEU BY POSITRON ANNIHILATION
Author(s) -
Bo Wang,
Peng Zhilin,
WU WAN,
Shiqing Li,
Shaojie Wang,
L. Y. Hao,
HaiYan Xie
Publication year - 1996
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.45.153
Subject(s) - materials science , positron annihilation , dopant , amorphous solid , annihilation , polymer , glass transition , conductivity , positron , doping , thermodynamics , chemistry , crystallography , composite material , nuclear physics , physics , electron , optoelectronics
Positron annihilation lifetime spectra have been measured for polymer electrolyte poly (ether urethane) (PEU). The variations of the positron annihilation parameters as a function of Li - dopant concentration show that the Li - dopants diffuse mostly into the amorphous regions. The temperature dependances of the o - Ps lifetime and its intensity give the information about the structural transition of PEU and PEU - LiClO4. The relation between the conductivity of PEU - LiClO4 and temperature can be explained by the theory of free volume.