Size dependence of photovoltaic properties and surface states modulation in ZnO nanowire/poly（3-hexylthiophene） hybrid nanostructures  

作　　者：Yuqian Huang Ke Cheng Jingjing Liu Ming Xue Zhongcheng Kuang Zuliang Du 

机构地区：[1]Key Laboratory for Special Functional Materials of Ministry ofEducation, Collaborative Innovation Center of Nano FunctionalMaterials and Applications, Henan University, Kaifeng 475004,China

出　　处：《Science Bulletin》2016年第3期245-251,共7页科学通报（英文版）

摘　　要：An appropriate diameter and wire-to-wire dis- tance is critical for optimizing the performance of hybrid inorganic/organic photovoltaic devices. For a deep under- standing of their influences on such hybrid structures, the well-ordered ZnO nanowires with different diameters are fabricated by the versatile hydrothermal growth. The dependence of the photovoltaic performance on the surface states, wire diameter and wire-to-wire distance is investi- gated. We demonstrate that the pristine thick ZnO nanowires film possess a higher surface photovoltage （SPV） response than the thin one. This is mainly due to the influence of surface states on the thin ZnO nanowires, which can capture the photo-generated carriers. When the two kinds of ZnO nanowires are fabricated into a hybrid inorganic/organic structure, the thin ZnO nanowires/poly（3-hexylthiophene） hybrid film has a higher SPV response than the thick one, which is contrary to the pristine ZnO nanowires. This is benefited from the smaller diameter and wire-to-wire dis- tance of the thin ZnO nanowires owned. The crystallinity, wire diameter and wire-to-wire distance have the crucial influence on the final photovoltaic performance. The results shown here give us insights toward designing efficient hybrid photovoltaic devices.适当直径和 wire-to-wire 距离为优化混合无机 / 器官的光电的设备的表演是批评的。为他们对如此的混合结构的影响的深理解，有不同直径的秩序井然的 ZnO nanowires 被万用的热水的生长制作。表面状态，电线直径和 wire-to-wire 距离上的光电的表演的依赖被调查。我们证明太古的厚 ZnO nanowires 电影拥有更高的表面 photovoltage (SPV ) 反应比薄的。这主要由于对薄 ZnO nanowires 的表面状态的影响，它能捕获产生相片的搬运人。当二种 ZnO nanowires 被制作进混合无机 / 器官的结构时，薄 ZnO nanowires/poly (3-hexylthiophene ) 混血儿电影比厚的有更高的 SPV 回答，它与太古的 ZnO nanowires 相反。这从更小的直径和拥有的薄 ZnO nanowires 的 wire-to-wire 距离被有益于。crystallinity，电线直径和 wire-to-wire 距离在最后的光电的表演上有关键影响。这里显示出的结果向设计有效混合光电的设备给我们卓见。

关 键 词：ZnO nanowires - Crystallinity - Wirediameter Surface states Hybrid heterojunction solarceils 

分 类 号：TN141[电子电信—物理电子学] TQ326.6[化学工程—合成树脂塑料工业]