P3HT与CdTe纳米枝晶p-n异质结敏化ZnO纳米管阵列的光电化学研究

doi:10.6023/A13080901

化学学报 ›› 2014, Vol. 72 ›› Issue (1): 114-120.DOI: 10.6023/A13080901 上一篇

研究论文

P3HT与CdTe纳米枝晶p-n异质结敏化ZnO纳米管阵列的光电化学研究

郝彦忠, 范龙雪, 孙宝, 孙硕, 裴娟

河北科技大学理学院石家庄 050018

投稿日期:2013-09-03 发布日期:2013-11-14
通讯作者: 郝彦忠，E-mail：yzhao@hebust.edu.cn；Tel.：0086-0311-81669957；Fax：0086-0311-81669957 E-mail:yzhao@hebust.edu.cn
基金资助:
项目受国家自然科学基金（Nos. 21173065，20573031）；河北省自然科学基金（No. B2010000856）；河北科技大学博士启动基金（QD201050）和校立科研基金（XL201255）资助.

A Photoelectrochemical Study of p-n Heterojunction between P3HT and Nanodendrite CdTe Sensitized ZnO Nanotube Array

Hao Yanzhong, Fan Longxue, Sun Bao, Sun Shuo, Pei Juan

College of Sciences, Hebei University of Science and Technology, Shijiazhuang 050018, China

Received:2013-09-03 Published:2013-11-14
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 21173065, 20573031), the Natural Science Foundation of Hebei Province of China (No. B2010000856), the Doctoral Starting up Foundation (QD201050) and School fund (XL201255) of Hebei University of Science and Technology, China.

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1. P3HT与CdTe纳米枝晶p-n异质结敏化ZnO纳米管阵列的光电化学研究.PDF(120KB)

摘要/Abstract

采用电化学方法首先在ITO导电玻璃上制备了一维有序ZnO纳米管阵列，然后在ZnO纳米管阵列上采用电化学方法沉积纳米枝状CdTe，形成了纳米枝状CdTe包覆ZnO纳米管的CdTe@ZnO壳核式复合结构，最后在上述复合结构中旋涂一层P3HT薄膜形成P3HT包覆的P3HT@CdTe@ZnO复合薄膜. 以此复合薄膜为光活性层组装成半导体敏化太阳电池，研究了该类电池的光电转换性能，对该电池的工作原理进行初步研究，所得太阳电池能量转换效率最高达到1.38%.

关键词: ZnO纳米管, 纳米枝状CdTe, P3HT, 半导体敏化太阳电池

In this paper, we fabricated a semiconductor-sensitized solar cell using the photoelectrode based on poly(3-hexylthiophene) (P3HT) modified nanodendrite CdTe coated ZnO nanotube array (P3HT@CdTe@ZnO) composite film. One-dimensional vertically ordered ZnO nanotube arrays were prepared on ITO conductive glass substrate by electrochemical etching of the electrodeposited ZnO nanorod arrays in alkaline solution. Nanodendrite CdTe was electrodeposited on ZnO nanotube array, and a CdTe nanodendrite coated ZnO nanotube array shell-core structure was obtained. Different CdTe nanodendrite length could be obtained by adjusting the total charge quantity applied during deposition. Then a thin P3HT layer was spin-coated onto the above nanostructure, and a P3HT@CdTe@ZnO composite film was obtained. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and energy dispersive-ray spectroscopy (EDS) were used to characterize the samples. The photoelectrochemical properties of the above samples were studied, and the results showed that CdTe and P3HT were excellent n-type and p-type materials. A suitable length of CdTe nanodendrite could improve the photovoltaic properties of the solar cell, which was attributed to the enhanced light absorption in the visible region and the decrease in the recombination of photogenerated electrons and holes due to the multiple channels provided by nanodendrites. It has been demonstrated that the favourable hole transportation material P3HT coated on the surface of the CdTe@ZnO shell-core nanotube array largely improved the photoelectrochemical performance. A heterojunction was formed in the interface between n-type CdTe and p-type P3HT, and played an important role in the efficient charge separation and fast charge transportation. A semiconductor-sensitized solar cell with the P3HT@CdTe@ZnO film as photoactive layer was fabricated. The photovoltaic properties of the semiconductor-sensitized solar cell was studied, and the mechanism of the solar cell was investigated. An energy conversion efficiency up to 1.38% with short circuit current density (J_sc) 8.980 mA/cm², open circuit voltage (V_oc) 0.599 V, fill factor (FF) 0.26 respectively was obtained with the designed semiconductor-sensitized solar cell.

Key words: ZnO nanotube, nanodendrite CdTe, P3HT, semiconductor-sensitized solar cell

引用此文

郝彦忠, 范龙雪, 孙宝, 孙硕, 裴娟. P3HT与CdTe纳米枝晶p-n异质结敏化ZnO纳米管阵列的光电化学研究[J]. 化学学报, 2014, 72(1): 114-120.

Hao Yanzhong, Fan Longxue, Sun Bao, Sun Shuo, Pei Juan. A Photoelectrochemical Study of p-n Heterojunction between P3HT and Nanodendrite CdTe Sensitized ZnO Nanotube Array[J]. Acta Chimica Sinica, 2014, 72(1): 114-120.

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P3HT与CdTe纳米枝晶p-n异质结敏化ZnO纳米管阵列的光电化学研究

A Photoelectrochemical Study of p-n Heterojunction between P3HT and Nanodendrite CdTe Sensitized ZnO Nanotube Array

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