聚(3,4-乙烯基二氧噻吩):聚(苯乙烯磺酸鹽)-鉑奈米粒子混成 導電薄膜之製備與分析及其在可撓式染敏太陽能電池的應用

Abstract

This study use polyol method reducted hydrogen hexachlorate(IV) to platinum nanoparticles by ethylene glycol (EG) under 90 oC. Improve conduction polymer PEDOT:PSS by EG and doping platinum nanoparticles as 6.8、12.7、17.9 and 22.5 wt % Pt. Compare of characters used 500 rpm and 1000 rpm to spin coating on FTO and ITO-PET substrate. Platinum nanoparticles analysis by DLS、XRD and TEM fit with platinum characteristic crystalline, particles size and grain size about 3 ~ 5 nm; AFM analysis, add EG into PEDOT:PSS raise up the Ra and RMS, add into more platinum nanoparticles, Ra and RMS also raise up; the viscosity of PEDOT:PSS solution down after EG treatment, the viscosity raise by add more platinum nanoparticles, 17.9 wt % Pt have the max viscosity, the more thick of film thickness also in 17.9 wt % Pt; UV-Vis transmittance analysis, the thick film have low transmittance; Four probe and EIS analysis, PEDOT:PSS after EG treatment, sheet resistance and resistance down, add into more platinum nanoparticles let sheet resistance and resistance down; From CV analysis, PEDOT:PSS after EG treatment can produce more reduction current, add into more platinum nanoparticles can produce more reduction current; DSSC efficiency, use TiO2 working electrode and N3 dye, use 500 rpm spin coating 22.5 wt % Pt on FTO substrate as counter electrode, 4.16 %, use 500 rpm spin coating 22.5 wt % Pt on ITO-PET substrate as counter electrode, use liquid and gel electrolyte, 1.94 % and 1.57 %.