改質聚吡咯透明導電薄膜之性質與光伏元件應用

本研究中針對藉由臨場化學聚合法之方式，以氯化鐵作為氧化劑，將吡咯(pyrrole)單體氧化聚合成具導電特性的聚吡咯導電薄膜，將其沉積之前之基板以不同種類之有機矽烷(organosilanes)進行表面自我組裝處理，藉以獲得增強與基材之間吸附力之聚吡咯導電薄膜，並以不同陰離子摻雜劑檢驗是否會影響其現象。利用撓曲特徵量測系統(Flexible-characteristics inspection system , FCIS)分析沉積在PET基材上之軟性聚吡咯透明電極其可撓性質之特徵，並以不同濕度環境來檢驗水氣對於聚吡咯導電薄膜之電性影響，最後則利用以強化與基材間吸附力之軟性聚吡咯透明電極取代ITO導電玻璃成為陽極部分，藉以實現可撓性高分子太陽能電池。結果顯示聚吡咯薄膜擁有良好的可撓曲性質，另外發現通過撓曲竟然可以使得聚吡咯透明導電電極的片電阻值下降。而透過不同的濕度環境測試，由四點探針(Four-point probe)量測電性，可發現水氣確實對聚吡咯的導電性質有負面的影響，並可透過摻雜蒽醌-2-磺酸或對甲苯磺酸鹽等摻雜物來抑制此現象。在經過不同種類的有機矽烷之實驗後，我們成功的利用N-(3-三甲氧基矽丙基)吡咯與3-氨基丙基三乙氧基矽烷來得到強化吸附力之聚吡咯薄膜，即使更換不同的摻雜物亦對此現象沒有影響，並透過用四點探針(Four-point probe)、場發射電子顯微鏡(Scanning Electron Microscope, SEM)、拉曼光譜儀(Raman Spectrometer)、紫外光-可見光-近紅外光譜儀(UV-VIS-NIR Spectrometer)等儀器進行量測，，研究不同之有機矽烷處理以及不同之摻雜物，對其導電特性、表面形貌、載子種類及聚吡咯結構做一整合性的探討與分析。而最終以強化與基材間吸附力之軟性聚吡咯透明電極實現了可撓式高分子太陽能電池。

關鍵字

聚吡咯；導電高分子；吸附力；太陽能電池；撓曲；濕度

並列摘要

In this study, we fabricated all-polymer transparent electrodes by depositing polypyrole thin films on poly(ethylene terephthalate) by oxidative chemical polymerization, and performed exhaustive bending tests on the obtained all-polymer electrodes using a programmable automatic Flexible-Characteristic Inspection System (FCIS). We also prepared three polypyrrole thin film samples and placed them in three different desiccators to observe humidity effect on sheet resistance of polyprrole thin films. We observed polypyrrole doped with anthraquinone-2-sulfonic acid can better resist the humidity degradation in electrical conductivity. In order to further improve the interfacial adhesion between polypyrrole thin films prepared by in situ oxidative chemical polymerization methods on silica-based substrates, we fabricated and characterized polypyrrole thin films grown on organosilanized glass surfaces. It was found that polypyrrole thin films grown on glass surfaces modified with N-(3-trimethoxysilylpropyl)pyrrole and 3-aminopropyltriethoxysilane had improved interfacial adhesion. This phenomenon was analyzed by four-point probe measurement, field emission scanning electron microscopy, Raman spectroscopy and ultraviolet-visible-near infrared spectroscopy. Finally, we fabricated flexible OPV devices using all-polymer transparent electrodes based on polypyrrole thin films deposited on poly(ethylene terephthalate) substrates.

並列關鍵字

Polypyrrole ； Conducting polymer ； Flexible ； Organic solar cell ； adhesion

參考文獻

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改質聚吡咯透明導電薄膜之性質與光伏元件應用

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