| 聚苯胺类/n-Si(111)单晶硅复合电极:制备与光电性质 |
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| 引用本文： | Lotfia El Majdou,李军,张月娟,李妮丽,徐庆红.聚苯胺类/n-Si(111)单晶硅复合电极:制备与光电性质[J].无机化学学报,2013,29(18). |
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| 作者姓名： | Lotfia El Majdou 李军 张月娟 李妮丽 徐庆红 |
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| 作者单位： | 北京化工大学理学院, 化工资源有效利用国家重点实验室, 北京 100029,北京化工大学理学院, 化工资源有效利用国家重点实验室, 北京 100029,北京化工大学理学院, 化工资源有效利用国家重点实验室, 北京 100029,北京化工大学理学院, 化工资源有效利用国家重点实验室, 北京 100029,北京化工大学理学院, 化工资源有效利用国家重点实验室, 北京 100029 |
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| 基金项目： | 国家自然科学基金(No.U1362113)资助项目。 |
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| 摘 要： | 在过氧化月桂酰作用下,于n-Si(111)型单晶硅表面上分别嫁接苯胺及烷基取代苯胺,进而实现晶体硅表面上聚苯胺和烷基取代聚苯胺的原位聚合,制备得到了系列聚苯胺(或烷基取代聚苯胺)/n-Si(111)单晶硅复合电极。此外,对上述合成电极表面苯胺链进行磺化,得到系列磺酸基化的单晶硅复合电极。电化学研究结果显示,聚苯胺直接嫁接于晶体硅表面所得到的复合电极光电转化效率最高,苯胺聚合链通过碳碳双键桥连于单晶硅表面所得到复合电极的光电转化效率高于通过碳碳单键桥连得到的复合电极,但其光电转化效率低于苯胺聚合链直接桥连于晶体硅表面而得到的复合电极。另外发现,苯环磺酸基化有利于提高复合电极的光电转化效率。
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| 关 键 词： | 半导体 表面化学 薄膜 合成设计 电化学 |
| 收稿时间： | 7/6/2015 12:00:00 AM |
Photoelectrode of Polyanilines/n-Si(111) Crystalline: Preparation and Photoelectric Property |
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| Lotfia El Majdou,LI Jun,ZHANG Yue-Juan,LI Ni-Li and XU Qing-Hong.Photoelectrode of Polyanilines/n-Si(111) Crystalline: Preparation and Photoelectric Property[J].Chinese Journal of Inorganic Chemistry,2013,29(18). |
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| Authors: | Lotfia El Majdou LI Jun ZHANG Yue-Juan LI Ni-Li and XU Qing-Hong |
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| Institution: | State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China,State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China,State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China,State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China and State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | The self-assembled monolayers (SAMs) of aniline and alkyl substituted anilines grafted on n-Si(111) crystalline surface were prepared in the presence of lauroyl peroxide, and the photoelectrodes of polyanilines/n-Si(111) crystalline were prepared based on polymerizations between the SAMs and anilines. Additionally, the polyanilines with sulfonic acid group (SPANI) substituted n-Si(111) crystalline photoelectrodes were prepared via the above samples to fabricate SPANI/n-Si(111) electrodes (Si-SPANIs). Electrochemical studies indicate that the electrode based on 4-bromoaniline (Si-PANI) is better than that of 4-ethynylaniline (Si-C=C-PANI), and the electrode from 4-vinylaniline (Si-C-C-PANI) is the poorest. In addition, anion ring substitution is important in promoting photoelectric conversion of the electrodes. An electrode with high photocurrent density of 15.4 mA·cm-2 and photoelectric transformation efficiency of 13% was obtained. |
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| Keywords: | semiconductors surface chemistry thin films synthesis design electrochemistry |
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