材料科学
纳米棒
异质结
半导体
光伏系统
色素敏化染料
能量转换效率
太阳能电池
光电子学
混合太阳能电池
纳米技术
带隙
聚合物太阳能电池
电极
电气工程
电解质
工程类
物理化学
化学
作者
Yue-Ying Li,Jian‐Gan Wang,Huanhuan Sun,Bingqing Wei
标识
DOI:10.1021/acsami.7b17044
摘要
Organic dyes used in the conventional dye-sensitized solar cells (DSSCs) suffer from poor light stability and high cost. In this work, we demonstrate a new inorganic sensitized solar cell based on ordered one-dimensional semiconductor nanorod arrays of TiO2/NiTiO3 (NTO) heterostructures prepared via a facile two-step hydrothermal approach. The semiconductor heterostructure arrays are highly desirable and promising for DSSCs because of their direct charge transport capability and slow charge recombination rate. The low-cost NTO inorganic semiconductor possesses an appropriate band gap that matches well with TiO2, which behaves like a "dye" to enable efficient light harvesting and fast electron-hole separation. The solar cells constructed by the ordered TiO2/NTO heterostructure photoanodes show a significantly improved power conversion efficiency, high fill factor, and more promising, outstanding life stability. The present work will open up an avenue to design heterostructured inorganics for high-performance solar cells.
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