Electric and dielectric properties of some luminescent solar collectors based on phthalocyanines and hematoporphyrin doped PMMA
作者： S.M. Reda
DOI: 10.1016/J.DYEPIG.2006.06.031
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摘要: Abstract The electrical properties: DC-electrical conductivity (σDC), AC-electrical (σAC), dielectric permittivity (ɛ′) and loss (ɛ″) for pure polymethylmethacrylate (PMMA) mixed with phthalocyanine, Ni-phthalocyanine hematoporphyrin IX chloride laser dyes have been investigated. values all polymer–dye samples are higher than that of the PMMA. For investigated samples, at constant temperature, frequency dependence (σAC) was found to obey relation (σAC) = Aωs. results discussed according correlated barrier hopping CBH mechanism from which Coulomb well charge carriers (WM) calculated. dye-doped sample showed larger value compared others. At frequencies, ɛ′ doped one. This is due a free volume enhancement offered by large size dye molecule. Also, addition PMMA causes an increase in intensity peak accompanied shift its position. effect chemical structure on properties discussed.
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