Template-free synthesis of vertically aligned CdS nanorods and its application in hybrid solar cells

Template-free synthesis of vertically aligned CdS nanorods and its application in hybrid solar cells
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垂直排列CdS纳米棒的无模板合成及其在混合太阳能电池中的应用

DOI:
10.1016/j.solmat.2009.10.010
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发表时间:
2010-02
影响因子:
6.9
通讯作者:
Chen, Hongzheng
Chen, Hongzheng
中科院分区:
材料科学2区
文献类型:
--
作者:
Qiu, Weiming;Yang, Ligong;Shi, Minmin;Jiang, Xiaoxia;Wang, Mang;Xu, Hao;Chen, Fei;Chen, Hongzheng

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我们利用一步法制备的垂直排列的CdS纳米棒阵列和聚(2-甲氧基-5-(2′-乙基己氧基)-1,4-苯撑乙烯)(MEH-PPV)制备并研究了杂化太阳能电池。垂直排列的CdS纳米棒提供了最小的电子传输路径,以减少异质结界面处的电荷载流子复合。光活性层的制备通过两种沉积方法,浸渍和旋涂的MEH-PPV的CdS纳米棒。扫描电子显微镜(SEM)显示,通过不同的沉积方法可以控制MEH-PPV相向CdS纳米棒阵列中的渗透程度,从而影响光伏器件的性能。退火处理对器件性能的影响也进行了研究,退火处理后的功率转换效率为浸涂的四倍,旋涂的两倍。
We have fabricated and investigated hybrid solar cells based on one-step fabricated vertically aligned CdS nanorod arrays and poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV). The vertically aligned CdS nanorods provide the minimal electron transport path to reduce the charge carrier recombination at the heterojunction interface. The photoactive layers were prepared by two deposition methods, dip- and spin-coating of MEH-PPV on CdS nanorods. Scanning electron microscope (SEM) showed that the extent of infiltration of the soft MEH-PPV phase into the rigid CdS nanorods arrays can be controlled by different deposition methods, which strongly influence the PV device performance. The influence of annealing treatment on the device performance is also studied; the power conversion efficiency is quadrupled for dip-coating and doubled for spin-coating after the annealing treatment.
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