The application of the natural dyes extracted from grapes skin in dye-sensitized solar cells as the photosensitive agents was investigated.Two samples battery capability were tested in the dye-sensitized solar cells.T...The application of the natural dyes extracted from grapes skin in dye-sensitized solar cells as the photosensitive agents was investigated.Two samples battery capability were tested in the dye-sensitized solar cells.The results show that the grapes skin pigment possesses a wide absorption near the 520nm.The hydrogen bonds are easy formed between the hydroxy of anthocyanin pigment existing in the grapes skin pigment and the surface oxygen of TiO2,that leads the grapes skin pigment to display the excellent properties in photoelectric conversion comparing with the red roses pigment.Under the sunlight shinning,the grapes skin pigment dye-sensitized solar cells can produce a max photocurrent of 60μA and a steady open voltage of 0.4V,the results demonstrate that the photosensitive agent is a good photoelectricity conversion material.展开更多
分别用聚合物辅助沉积法和金属有机物分解法制备了WO_3和BiVO_4半导体薄膜电极。利用固体紫外-可见漫反射光谱、电化学阻抗和线性扫描伏安法,对WO_3和BiVO_4半导体薄膜电极的能带结构进行了表征。制备了WO_3/BiVO_4异质结复合光电极,并...分别用聚合物辅助沉积法和金属有机物分解法制备了WO_3和BiVO_4半导体薄膜电极。利用固体紫外-可见漫反射光谱、电化学阻抗和线性扫描伏安法,对WO_3和BiVO_4半导体薄膜电极的能带结构进行了表征。制备了WO_3/BiVO_4异质结复合光电极,并通过扫描电子显微镜、X射线衍射和X射线光电子能谱,对该复合光电极的断面形貌、晶型结构和物质组成进行了分析。最后,对WO_3/BiVO_4复合光电极的光电转化性能进行了研究。研究结果表明:均为单斜晶型的WO_3和BiVO_4之间形成了膜厚约为450 nm的II型异质结;在施加相对于可逆氢电极1.23 V的电势时,WO_3/BiVO_4光电极的光电流密度可以达到1.926 m A/cm^2,表现出了良好的光电转化性能。展开更多
文摘The application of the natural dyes extracted from grapes skin in dye-sensitized solar cells as the photosensitive agents was investigated.Two samples battery capability were tested in the dye-sensitized solar cells.The results show that the grapes skin pigment possesses a wide absorption near the 520nm.The hydrogen bonds are easy formed between the hydroxy of anthocyanin pigment existing in the grapes skin pigment and the surface oxygen of TiO2,that leads the grapes skin pigment to display the excellent properties in photoelectric conversion comparing with the red roses pigment.Under the sunlight shinning,the grapes skin pigment dye-sensitized solar cells can produce a max photocurrent of 60μA and a steady open voltage of 0.4V,the results demonstrate that the photosensitive agent is a good photoelectricity conversion material.
文摘分别用聚合物辅助沉积法和金属有机物分解法制备了WO_3和BiVO_4半导体薄膜电极。利用固体紫外-可见漫反射光谱、电化学阻抗和线性扫描伏安法,对WO_3和BiVO_4半导体薄膜电极的能带结构进行了表征。制备了WO_3/BiVO_4异质结复合光电极,并通过扫描电子显微镜、X射线衍射和X射线光电子能谱,对该复合光电极的断面形貌、晶型结构和物质组成进行了分析。最后,对WO_3/BiVO_4复合光电极的光电转化性能进行了研究。研究结果表明:均为单斜晶型的WO_3和BiVO_4之间形成了膜厚约为450 nm的II型异质结;在施加相对于可逆氢电极1.23 V的电势时,WO_3/BiVO_4光电极的光电流密度可以达到1.926 m A/cm^2,表现出了良好的光电转化性能。