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

Preparation and characterization of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)-platinum nanoparticle (PEDOT:PSS-Pt) hybrid conducting thin films and application of these films to flexible dye sensitized solar cells

魏士紘(Shih-Hung Wei)

指導教授 ： 張正良

共同指導教授 ： 張朝欽

淡江大學/工學院/化學工程與材料工程學系碩士班/碩士(2012年)

https://doi.org/10.6846/TKU.2012.00222

摘要

本研究使用多元醇還原法，在90 oC溫度用ethylene glycol (EG)將六氯鉑酸還原成奈米鉑粒子。用EG改質導電高分子PEDOT:PSS，在PEDOT:PSS溶液中掺混不同的鉑含量分別為6.8、12.7、17.9和22.5 wt % Pt。分析比較用轉速500 rpm和1000 rpm旋轉塗佈成膜在FTO玻璃基板和ITO-PET基板時性質的差異。
奈米鉑粒子經DLS、XRD和TEM的分析符合奈米鉑的特徵結晶峰，晶粒尺寸和粒徑大小約3 ~ 5 nm；AFM分析，PEDOT:PSS經EG改質後，Ra和RMS提升，當鉑含量隨著增加，Ra和RMS跟著提升；PEDOT:PSS溶液的黏度經EG改質後下降，鉑含量的增加，黏度跟著提高，在17.9 wt % Pt時有最黏的黏度，在FTO玻璃基板和ITO-PET基板上成膜在17.9 wt % Pt時有最厚的膜厚，但成膜在ITO-PET基板時12.7 wt % Pt比22.5 wt % Pt還厚；越厚的膜有越低的UV-vis穿透度；經四點探針和EIS分析，PEDOT:PSS在EG改質後，片電阻值和電阻值下降，鉑含量增加時，膜厚越厚，片電阻值和電阻值下降；CV分析，PEDOT:PSS經EG改質後可產生較多的還原電流，鉑含量的增加也可產生更多的還原電流，雖然22.5 wt % Pt沒有最厚的膜厚，但可藉由較多的鉑含量而有最低的片電阻值和電阻值及較多的還原電流，FTO`玻璃基板比ITO-PET基板導電性好，使用FTO玻璃基板可得到較低的片電阻值和電阻值及較多的還原電流；效率量測上，使用TiO2工作電極和N3染料，在FTO玻璃基板上以500 rpm成膜的22.5 wt % Pt對電極組成為DSSC效率為4.16 %，在ITO-PET基板上以500 rpm成膜的22.5 wt % Pt對電極，使用液態和膠態電解液時DSSC效率分別為1.94 %和1.57 %。

關鍵字

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 ； 可撓式染敏太陽能電池

並列摘要

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 %.

並列關鍵字

PEDOT:PSS ； Pt ； DSSC ； ITO-PET

參考文獻

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