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中文摘要：
通过二次水热法合成锐钛矿TiO2纳米棒（ANR）．采用X射线衍射（XRD）、场发射扫描电镜（FE-SEM）和透射电镜（TEM）等手段对其进行表征．通过调节ANR和锐钛矿纳米颗粒（ANP）的掺杂比例来增加TiO2纳米晶膜的光捕获效率和电子传输速率，并对比了单层结构（ANR＋ANP）和双层结构（ANP/（ANR＋ANP））的纳米晶膜光阳极的光电转化性能．在AM1．5、光强100mW·cm^-2的模拟太阳光下测试，染料N719敏化的双层结构太阳能电池光电转化效率达7．3％，比相同条件下单层纯ANP光阳极器件的光电转化效率（6．1％）提高了20％．
英文摘要：
TiO2 anatase nanorods （ANR） were synthesized by a two-step hydrothermal method. The materials were characterized by X-ray diffraction （XRD）, field emission scanning electron microscopy （FE-SEM）, and transmission electron microscopy （TEM）. To increase the light harvesting efficiency and electron transfer rate, N719 dye-sensitized solar cells （DSSCs） were constructed and compared by adjusting the doping ratio of the anatase nanoparticles （ANP） and ANR in the TiO2 nanocrystalline film that was used as a photoanode in the DSSCs. The best light-to-electricity conversion efficiency （7.3%） was obtained for a double-layered photoanode （ANP/（ANR＋ANP）） cell, which is 20% higher than the traditional single-layered ANP cell （6.1%） when tested under the same conditions and at AM 1.5, 100 mW. cm-2.
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