https://scholars.lib.ntu.edu.tw/handle/123456789/391377
標題: | Synthesis and characterization of nano silver-modified graphene/PEDOT:PSS for highly conductive and transparent nanocomposite films | 作者: | WEN-YEN CHIU | 關鍵字: | Electrical conductivity; Optical transparency; Poly (3,4-ethyldioxythiophene) (PEDOT); Reduced graphene oxide; Silver nanoparticles | 公開日期: | 2015 | 卷: | 22 | 期: | 10 | 來源出版物: | Journal of Polymer Research | 摘要: | A solution-processed metal nanoparticle/graphene composite thin film is developed by the functionalization of reduced graphene oxide (f-RGO) nanosheets with SH and SO3Na functional groups. The RGO is prepared by the oxidation of natural graphite powder and the thermal reduction of graphene oxide (GO). The f-RGO nanosheets show an improved dispersion in water through salty groups (SO3Na) and a high affinity to silver ions via thiol groups. After a simple in-situ reduction method, Ag NPs, with particle size ca. 10 nm, can be distributed uniformly on the surface of f-RGO and utilized as conductive spacers between the graphene nanosheets. Due to the strong π-π interactions between a graphene nanosheet and a rigid backbone of PEDOT, the Ag-decorated f-RGO nanosheets (Ag@f-RGO) can be well dispersed within poly (3,4-ethylenedioxythiophene):poly (stryene sulfonate) (PEDOT:PSS) to develop highly transparent conductive films. This solution-based method permits the resulting nanocomposite thin film to maintain the intrinsic electronic property of both components, showing a hybrid thin film with a high conductivity of 2078 S/cm and a transmittance of 88 % at a wavelength of 550 nm. By making good use of the conducting network built up by the graphene and conducting polymer, we demonstrate the promising application of Ag@f-RGO/PEDOT:PSS nanocomposite thin film as highly conductive and transparent electrodes for organic photovoltaic devices. © 2015, Springer Science+Business Media Dordrecht. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84942419039&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/391377 |
DOI: | 10.1007/s10965-015-0847-7 | SDG/關鍵字: | Conducting polymers; Conductive films; Electronic properties; Graphene; Metal ions; Metal nanoparticles; Nanocomposites; Nanoparticles; Nanosheets; Particle size; Silver; Thin films; Electrical conductivity; Optical transparency; Poly (3,4-ethyldioxythiophene) (PEDOT); Reduced graphene oxides; Silver nanoparticles; Nanocomposite films |
顯示於: | 化學工程學系 |
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