Towards efficient photoinduced charge separation in carbon nanodots and TiO2 composites in the visible region

	Towards efficient photoinduced charge separation in carbon nanodots and TiO2 composites in the visible region
	Sun, M. Y.; S. N. Qu; W. Y. Ji; P. T. Jing; D. Li; L. Qin; J. S. Cao; H. Zhang; J. L. Zhao and D. Z. Shen
	2015
发表期刊	Physical Chemistry Chemical Physics
卷号	17 期号:12 页码:7966-7971
摘要	In this work, photoinduced charge separation behaviors in non-long-chain-molecule-functionalized carbon nanodots (CDs) with visible intrinsic absorption (CDs-V) and TiO2 composites were investigated. Efficient photoinduced electron injection from CDs-V to TiO2 with a rate of 8.8 x 10(8) s(-1) and efficiency of 91% was achieved in the CDs-V/TiO2 composites. The CDs-V/TiO2 composites exhibited excellent photocatalytic activity under visible light irradiation, superior to pure TiO2 and the CDs with the main absorption band in the ultraviolet region and TiO2 composites, which indicated that visible photoinduced electrons and holes in such CDs-V/TiO2 composites could be effectively separated. The incident photon-to-current conversion efficiency (IPCE) results for the CD-sensitized TiO2 solar cells also agreed with efficient photoinduced charge separation between CDs-V and the TiO2 electrode in the visible range. These results demonstrate that non-long-chain-molecule-functionlized CDs with a visible intrinsic absorption band could be appropriate candidates for photosensitizers and offer a new possibility for the development of a well performing CD-based photovoltaic system.
收录类别	SCI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55415
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Sun, M. Y.,S. N. Qu,W. Y. Ji,et al. Towards efficient photoinduced charge separation in carbon nanodots and TiO2 composites in the visible region[J]. Physical Chemistry Chemical Physics,2015,17(12):7966-7971.
APA	Sun, M. Y..,S. N. Qu.,W. Y. Ji.,P. T. Jing.,D. Li.,...&J. L. Zhao and D. Z. Shen.(2015).Towards efficient photoinduced charge separation in carbon nanodots and TiO2 composites in the visible region.Physical Chemistry Chemical Physics,17(12),7966-7971.
MLA	Sun, M. Y.,et al."Towards efficient photoinduced charge separation in carbon nanodots and TiO2 composites in the visible region".Physical Chemistry Chemical Physics 17.12(2015):7966-7971.

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