石墨烯複合透明導電膜之研究

Study of Transparent and Conductive Grphene Hybrid Films

石墨烯因具有優異之光學、電氣、熱傳及機械性質，已廣泛在製造、特性及應用上進行探討。本研究藉由奈米銀絲摻混於石墨烯中，製作石墨烯複合透明導電膜，探討其物性及可能增益之機制。氧化石墨烯藉由適度參數調整，以Modified Hummer法對石墨進行氧化的程序來製作；奈米銀絲透過多元醇合成法來合成及作適當的長軸比控制。實驗結果顯示，石墨烯-銀絲複合導電膜的導電特性較純石墨烯或純銀絲的導電膜來的優異。推測可能的原因是因為奈米銀絲在石墨烯間形成連結，彼此之間構成導電網路，有效降低接觸電阻，因此增強複合導電薄膜的導電能力。

Graphene nanosheets have attracted significant attention due to theirexcellent optical, electrical, thermal, and mechanical properties. In thisstudy, the transparent and conductive graphene hybrid films were preparedby incorporating silver nanowires into graphene, and the correspondingproperties and possible mechanisms were further discussed. Grapheneoxide and silver nanowires were synthesized by the Hummers methods andthe polyol synthesis method, respectively. The experimental results showthat the surface resistance of the hybrid films is much lower than those ofpure graphene films and silver nanowire films. We infer that the enhancementmay arise from the formation of the network between grapheneand silver nanowires to reduce the junction resistance.