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研究了具有纳米结构的C60层对TiOPc电荷分离的影响。以ITO为基底,真空蒸镀TiOPc薄膜,再以真空蒸镀和电泳法分别制备C60薄膜,通过扫描电镜(SEM)观察到电泳法制备的C60电荷分离层表面具有约200μm的微结构。实验表明:TiOPc/C60器件在近红外区间的光电响应曲线与TiOPc的吸收光谱曲线趋向一致,且光伏响应随功率增加呈线性增强;具有纳米结构C60电荷分离界面的器件光电响应比具有平整C60界面的器件强60%左右,其原因在于作为电荷分离区域的TiOPc和纳米结构C60层接触的面积更大,提高了电荷分离的效率。
The effect of nanostructured C60 layer on TiOPc charge separation was investigated. The ITO films were deposited on the TiOPc films by vacuum deposition. The C60 films were prepared by vacuum deposition and electrophoresis. The surface of the C60 charge separation layer was observed by SEM. The experimental results show that the optical response curve of TiOPc / C60 device converges with that of TiOPc, and the photovoltaic response increases linearly with the increase of power. The photoelectric response of the device with nanostructure C60 charge-separation interface is higher than that of the C60 interface with flat C60 interface Of the device is about 60% stronger because of the greater area of contact between the TiOPc and the nanostructured C60 layer as a charge separation region, improving the efficiency of charge separation.