Carroll David L, Czerw Richard, Harrison Benjamin
Center for Nanotechnology and Molecular Materials, Department of Physics, Wake Forest University, Winston-Salem, NC 27109, USA.
J Nanosci Nanotechnol. 2006 Jul;6(7):2204-7. doi: 10.1166/jnn.2006.373.
The effects of varying nanotube loading/concentration in carbon nanotube-poly(3-octylthiophene) blends used as thin film photovoltaic cells, have been studied. The network of single walled nanotubes clearly aids in exciton separation and modifies carrier mobility within the active layer as suggested by a bulk heterojunction model. Further, modifications to the metal-polymer interface occur with the addition of nanotubes leading to variations in the observed VOC of the photovoltaic cells. Finally, the "nanocomposite" devices exhibit significant enhancements to external power conversion efficiencies, with the overall efficiency strongly dependent on device design parameters such as the addition of buffer layers.
研究了用作薄膜光伏电池的碳纳米管-聚（3-辛基噻吩）共混物中不同纳米管负载量/浓度的影响。如体异质结模型所示，单壁纳米管网络明显有助于激子分离并改变活性层内的载流子迁移率。此外，添加纳米管会导致金属-聚合物界面发生变化，从而导致光伏电池观察到的开路电压（VOC）有所不同。最后，“纳米复合材料”器件的外部功率转换效率有显著提高，总体效率强烈依赖于器件设计参数，如缓冲层的添加。
