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Pattered CNT-based composite films for optoelectronic applications
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Paper Abstract

Owing to their exceptional electrical, optical and mechanical properties, carbon nanotubes (CNTs) are highly attractive and widely applied in the fields of material, chemistry, physics, etc. Recently, CNT-based composites films have attracted more and more attention. In this work, composite films composed by patterned CNTs (PCNTs) and vanadium oxide (VOx) were prepared by combining two techniques of spin-coating and spray-coating. Results reveal that VOx– PCNT composite films with different CNT patterns, including stripe, square, and parallelogram CNT shapes, were successfully prepared. The as-prepared VOx–PCNT composite films exhibit different electrical and optical properties. Particularly, under the same CNT quantity, the VOx–PCNT composite films containing higher dispersion of CNTs exhibit lower resistance (R). A low R of 343 kΩ was measured at room temperature from the composite film with a stripe CNTs’ pattern and a high dispersion of 33.3%. Moreover, UV-vis measurements indicate that the order for the optical absorption of the composite films is: stripe < square < parallelogram, revealing the increase of the absorption with the increase of the CNTs’ dispersion. Furthermore, after CNTs’ addition, the infrared absorption similarly increases, while the optical band gap decreases. These suggest that both the electrical and optical properties of VOx films can be rationally adjusted by changing the deposited CNTs’ patterns. Thus, we describe a new route to the control of the optical and electrical properties of metal oxides by the CNTs’ pattern.

Paper Details

Date Published: 8 February 2019
PDF: 6 pages
Proc. SPIE 10843, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging, 1084311 (8 February 2019); doi: 10.1117/12.2506369
Show Author Affiliations
Yu Gu, Univ. of Electronic Science and Technology of China (China)
Xiangdong Xu, Univ. of Electronic Science and Technology of China (China)
MingHui Sun, Univ. of Electronic Science and Technology of China (China)
Qian Liang, Univ. of Electronic Science and Technology of China (China)
XiaoMeng Cheng, Univ. of Electronic Science and Technology of China (China)
MinGang Zhang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 10843:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging
Yadong Jiang; Xiaoliang Ma; Xiong Li; Mingbo Pu; Xue Feng; Bernard Kippelen, Editor(s)

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