Oriented hierarchical single crystalline anatase TiO2 nanowire arrays on Ti-foil substrate for efficient flexible dye-sensitized solar cells
作者： Jin-Yun Liao , Bing-Xin Lei , Hong-Yan Chen , Dai-Bin Kuang , Cheng-Yong Su
DOI: 10.1039/C1EE02766B
关键词:
摘要: Hierarchical anatase TiO2 nanowire (HNW) arrays consisting of long single crystalline trunks and short nanorod branches have been synthesized on Ti-foil substrate via a two-step hydrothermal growth process. The formation the HNW based (NW) can be ascribed to crystallographic relationship between trunk branch. power conversion efficiency dye-sensitized solar cells (DSSCs) such photoelectrode (4.51%) shows significant enhancement compared array (3.12%) with similar thickness (∼15 μm in length), which attributed more dye loading, superior light scattering ability comparable electron transport rate for former. Furthermore, flexible DSSC using Ti as working electrode transparent PEDOT/ITO-PET prepared situelectrodeposition counter photovoltaic performance rigid Pt/FTO-glass cell. A high 4.32% (Jsc = 7.91 mA cm−2, Voc 796 mV, FF 0.69) is obtained first time fully hierarchical Pt-free electrode.
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