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| Preparation and Optoelectronic Properties of Zinc Tetraphenyl Porphyrin-Signle Walled Carbon Nanotube Composite Films |
| MA Miao, YAN Wei, XU Xiang-dong*, ZHU Hong-zhao, LIU Yu-tong, DAI Ze-lin, ZOU Rui-jiao, JIANG Ya-dong |
| School of Optoelectronic Information, University of Electronic Sicience and Technology of China, Chengdu 610054, China |
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Abstract In this work, Zinc tetraphenyl porphyrin (ZnTPP) films and ZnTPP-carbon nanotube (CNT) composite films were successfully prepered by spray coating. The morphologies, electrical and optical properties of the as-prepared materials were systematically investigated by metalloscope, scanning electron microscopy (SEM), profilometer, resistance meter, UV-Vis, and Fourier transform infrared spectroscopy (FTIR), respectively. Results revealed that the THz fingerprint peaks of ZnTPP at 44, 57, 77, 88，95 and 102 cm-1 were similar with those of chlorophyll in palm leaves (Ref. [3]). Importantly, not only the uniformity and compactness of the ZnTPP films, but also their electrical conductivity and optical responses in a broad area from ultraviolet to terahertz were significantly enhanced after the addition of CNTs to ZnTPP. Moreover, new THz absorption peaks at 47 and 66 cm-1 were detected after the composite formation, suggesting strong interactions between ZnTPP and CNTs which led to the improvement of the comprehensive properties of the composite films. These results demonstrate that the electrical and optical properties of ZnTPP can be effectively modified by CNTs, and by which the comprehensive properties can be achieved, thus, the requirements of optoelectronic devices can be met. The results in this work will be helpful for promoting the study on the terahertz spectra of the organics as well as seeking new terahertz organic sensitive materials in the future.
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Received: 2016-10-08
Accepted: 2017-03-02
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Corresponding Authors:
XU Xiang-dong
E-mail: xdxu@uestc.edu.cn
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