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首页> 外文期刊>RSC Advances >An efficient quasi solid state dye sensitized solar cell based on polyethylene glycol/graphene nanosheet gel electrolytes
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An efficient quasi solid state dye sensitized solar cell based on polyethylene glycol/graphene nanosheet gel electrolytes

机译：基于聚乙二醇/石墨烯纳米凝胶电解质的一种高效的准固态染料敏化太阳能电池

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摘要

A poly(ethylene glycol)/graphene nanosheet quasi solid gel electrolyte was synthesized using an in situ polymerization technique for dye-sensitized solar cells (DSSCs). Fabrication of the DSSCs was carried out by sandwiching the poly(ethylene glycol)/graphene nanosheet (PEG/graphene nanosheet) gel electrolyte in between the dye sensitized TiO2 nanoflower photoanode and platinum based counter electrode using a spacer of thickness 25 mu m. However, the graphene nanosheets form a network with PEG matrix channels in the gel electrolyte which enhances charge transportation. The PEG/graphene nanosheet gel electrolyte was characterized using Fourier transform infrared spectroscopy, cyclic voltammetry, scanning electron microscopy, transmission electron microscopy, thermal gravimetric analysis, atomic force microscopy and electrochemical impedance spectroscopy. Electrochemical impedance spectroscopy results demonstrate the reduction of charge transfer resistance (R-ct) with the incorporation of graphene nanosheets which promotes charge transportation through the gel electrolyte. The reduction of (R-ct) enhances the device efficiency which was observed in the current density vs. voltage (J-V) measurements and thereby the incident photon to converted electron (IPCE) curves. The maximum photovoltaic conversion efficiency of 5.16% was achieved.
机译：使用染料敏化太阳能电池（DSSCs）的原位聚合技术合成聚（乙二醇）/石墨烯纳米晶片准固体凝胶电解质。使用厚度25μm的间隔晶体夹在染料之间的聚（乙二醇）/石墨烯纳米晶片（PEG /石墨烯纳米晶片）凝胶电解质中，通过将聚（乙二醇）/石墨烯纳米液（PEG /石墨烯纳米晶片）凝胶电解质进行制备进行DSSCs。然而，石墨烯纳米片在凝胶电解质中形成具有PEG矩阵通道的网络，其增强电荷运输。使用傅立叶变换红外光谱，循环伏安法，扫描电子显微镜，透射电子显微镜，热重量分析，原子力显微镜和电化学阻抗光谱学，表征PEG /石墨烯纳米片电解质。电化学阻抗光谱结果证明了具有掺入石墨烯纳米片的电荷转移电阻（R-CT），该纳米片促进通过凝胶电解质的电荷输送。 （R-CT）的还原增强了在电流密度与电压（J-V）测量中观察到的装置效率，从而将其入射光仪转换为转换电子（IPCE）曲线。实现了5.16％的最大光伏转换效率。

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