Title of article
Effect of molar mass on electroluminescence of poly(p-phenylene)
Author/Authors
Seoul، نويسنده , , Chang and Song، نويسنده , , Won-Jun and Kang، نويسنده , , Gi-Wook and Lee، نويسنده , , Changhee، نويسنده ,
Issue Information
دوماهنامه با شماره پیاپی سال 2002
Pages
8
From page
9
To page
16
Abstract
Oligo(p-phenylene)s (OPP) with different degree of polymerisations (DP) of 6,8,10,and poly(p-phenylene)(PPP) of DP=27,63 were synthesized. Thin-films were formed for four OPPs (DP=5,6,8,10) by thermal vacuum deposition. Two PPP samples (DP=27,63) are used in the powder form. All the samples were semicrystalline. Infra-red (IR), UV–VIS absorption, photoluminescence (PL) and electroluminescence (EL) spectra were measured and discussed in terms of the molecular-mass. All the optical peaks shifted to lower wavelengths in proportion to the inverse of the DP. The quantum yield of the ITO/OPP/Al electroluminescent device (ELD) increased with the increase of DP up to DP=10, the highest molar mass p-phenylene compound which can be thermally evaporated without loss of original DP.
Keywords
electroluminescence , Optical properties , quantum yield , Poly(p-phenylene) , p-Phenylene oligomer
Journal title
Synthetic Metals
Serial Year
2002
Journal title
Synthetic Metals
Record number
2076718
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