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对基于纳米线结构的无机/有机杂化光伏器件而言,合适的纳米线直径和线间距对其效率有着至关重要的影响.本文采用简单方便的水热生长法合成了具有不同直径和线间距的有序Zn O纳米线阵列,详细研究了表面态对其光伏性能的影响.结果表明,对于未经处理的Zn O纳米线,较大直径的Zn O阵列比较细的样品具有更高的表面光电压响应.这是由于较细的Zn O纳米线表面具有丰富的表面限域态,容易捕获光生载流子,成为载流子复合中心.利用2种不同的氧化锌纳米线构筑了无机/有机杂化薄膜,直径较小的样品比大直径的样品具有更高的表面光电压响应.这是由表面有机材料的钝化所导致,并且小直径的Zn O纳米线具有较小的线直径和线间距,更有利于光生电子-空穴对在有机/无机材料界面的分离.
For inorganic / organic hybrid photovoltaic devices based on nanowire structure, the proper nanowire diameter and line spacing have a crucial effect on their efficiency.In this paper, a simple and convenient hydrothermal growth method was used to synthesize different diameter and line The results show that for the untreated Zn O nanowires, the larger diameter Zn O arrays have the higher density of the higher order ZnO nanowire arrays Surface photovoltage response.This is because the surface of the thinner Zn O nanowires is rich in surface confinement state, easy to capture photo-generated carriers to become carrier recombination center.Using two different zinc oxide nanowires to build an inorganic / Organic hybrid thin films, the smaller diameter samples have higher surface photovoltage responses than the larger diameter samples, which is caused by the passivation of the surface organic materials, and the small diameter ZnO nanowires have a smaller linear diameter and Line spacing, more conducive to photogenerated electron-hole pairs in the organic / inorganic material interface separation.