Novel dye-sensitized solar cell architecture using TiO2-coated Ag nanowires array as photoanode

来源期刊:Rare Metals2019年第4期

论文作者:Ming Wang Sam Zhang Zhao-Fu Du Li-Dong Sun Dong-Liang Zhao

文章页码:316 - 320

摘    要:With the aim of reducing series resistance and increasing dye loading, novel dye-sensitized solar cell architecture was designed with TiO2 nanoparticle-coated Ag nanowires array as the photoanode. Ag nanowire array was prepared by anodic aluminum oxide(AAO) templateassisted electrochemical deposition route. Then, Ag nanowires were coated by TiO2 nanoparticles in hydrothermal process. The structures of the photoanode were characterized by field emission scanning electron microscopy(FESEM). Ag nanowires are covered by a layer of very fine nanoparticles with a diameter of less than 5 nm. X-ray diffraction(XRD) and selected-area electron diffraction(SAED) show that Ag nanowires have a strong preferred orientation in(220) direction and the TiO2 coating layer is a polycrystalline structure. With this photoanode, 3.2%conversion efficiency is achieved for the cell sensitized with N3 dye.

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