原位制备聚3-己基噻吩和纳米碳双层异质结构

In-Situ Preparation of Double Layer Heterostructure of Poly(3-Hexylthiophene) and Nano-Carbon

采用射频等离子体方法处理聚3-己基噻吩(P3HT)薄膜,使P3HT原位形成由碳膜和P3HT组成的双层异质结构型.采用场发射扫描电子显微镜、紫外可见光分光光度计和薄膜X射线衍射仪对产物进行形貌和结构的表征与分析.结果表明:经等离子体处理后,P3HT薄膜的表层出现明显的炭化现象,形成一层致密的碳纳米颗粒组成的碳膜;可以通过调节射频电压调整P3HT薄膜的表层炭化程度,以优化复合膜的性能;等离子处理后,P3HT膜结晶度提高,复合膜光吸收增强.此P3HT/纳米碳层的双层异质复合膜有望用作聚合物太阳能电池的光敏活性层.

A double layer heterostructure of nano-carbon layer and poly（3-hexylthiophene）（P3 HT）film was in-situ prepared by radio frequency （RF）plasma.The morphology and structure of the double layer heterostructure were characterized and analyzed by field emission scanning electron microscopy,ultravi-olet-visible spectrophotometry and the thin film X-ray diffractometer.The results indicate that the sur-face layer of P3 HT thin film is carbonized to form a dense carbon layer composed of nano-carbon parti-cles during RF plasma treatment,and the carbonization process of P3 HT thin film is controllable by ad-justing the voltage of RF plasma,to optimize the performance of the composite film.After plasma treat-ment,the crystallinity of the P3 HT film is improved and the absorbance of the composite film is en-hanced.The composite film of double layer heterostructure composed of P3 HT and nano-carbon layer is expected to be promising as the photosensitive active layer of polymer solar cells.