The PEDOT-SPI polymer exhibited superior conductivities (10-1000 fold) than the PEDOT-PSS polymer after processing at room temperature (RT) and after annealing at elevated temperatures (180 掳C, 300 掳C). The PEDOT-SPI system also showed 20 fold, 50 fold and 6 fold increases in conductivity after RT, 180 掳C and 300 掳C processing respectively, relative to the conducting polymers PEDOT-SPAA and PEDOT-SPI (from thermal treatment of SPAA) derived from the corresponding sulfonated polyamic acid (SPAA) and EDOT. The PANi-SPI polymer displayed the highest room temperature conductivity but lost considerable conductivity after high annealing temperatures of 180 掳C and 300 掳C. The PPy-SPI polymer systems revealed better conductivities after room temperature processing and elevated annealing temperatures, 180 掳C and 300 掳C (40脳, 10脳, 50脳, respectively), than the PEDOT-SPI system. Secondary dopants (such as DMF), when used at 0.1 wt.%DMF and annealed at 180 掳C/10 min, affected a 100 fold improvement in conductivity (5.94 脳 10鈭? S/cm versus 4.0 脳 10鈭? S/cm of PEDOT-SPI). Furthermore, PANi-SPI doped with 0.1 wt.%DMF showed the highest conductivity (2.51 S/cm).
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