期刊
CARBON
卷 52, 期 -, 页码 509-519出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2012.10.003
关键词
-
资金
- CSIR [02 (0051)/12/EMR-II]
- CSIR, New Delhi
Amino-functionalized reduced graphene oxide (a-RGO) is used to change the morphology of polyaniline (PANI) and to increase the photocurrent in the PANI-a-RGO hybrid. The PANI morphology is changed from a nanotube to a flat rectangular nanopipe (FRNP) by the polymerization of aniline with a-RGO in acetic acid. Scanning (SEM) and transmission electron microscopy show the formation of FRNP morphology which varies by changing the PANI/a-RGO ratio in the hybrid. Time dependent SEM and Fourier transform infrared spectroscopy were used to investigate the mechanism of FRNP formation. Efficient (similar to 500 times) improvement in photocurrent is observed in FRNP over PANI nanotubes on irradiation with white light. The photoresponse is quite reproducible even after several cycles with a time interval of 100 s and in both the negative and positive bias photocurrent increases. A donor-acceptor based 'electron-hole' pair mechanism is proposed for the photocurrent behavior of FRNP. Using the PANI-a-RGO FRNP hybrid a dye sensitized solar cell with Rose Bengal dye is constructed yielding a power conversion efficiency of 2.012%. (c) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据