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题名: Ultrahigh-performance transparent conductive films of carbon-welded isolated single-wall carbon nanotubes
作者: Jiang, S;  Hou, PX;  Chen, ML;  Wang, BW;  Sun, DM;  Tang, DM;  Jin, Q;  Guo, QX;  Zhang, DD;  Du, JH;  Tai, KP;  Tan, J;  Kauppinen, EI;  Liu, C;  Cheng, HM
发表日期: 2018-5-1
摘要: Single-wall carbon nanotubes (SWCNTs) are ideal for fabricating transparent conductive films because of their small diameter, good optical and electrical properties, and excellent flexibility. However, a high intertube Schottky junction resistance, together with the existence of aggregated bundles of SWCNTs, leads to a degraded optoelectronic performance of the films. We report a network of isolated SWCNTs prepared by an injection floating catalyst chemical vapor deposition method, in which crossed SWCNTs are welded together by graphitic carbon. Pristine SWCNT films show a record low sheet resistance of 41 ohm rectangle(-1) at 90% transmittance for 550-nm light. After HNO3 treatment, the sheet resistance further decreases to 25 ohm rectangle(-1). Organic light-emitting diodes using this SWCNT film as anodes demonstrate a low turn-on voltage of 2.5 V, a high current efficiency of 75 cd A(-1), and excellent flexibility. Investigation of isolated SWCNT-based field-effect transistors shows that the carbon-welded joints convert the Schottky contacts between metallic and semiconducting SWCNTs into near-ohmic ones, which significantly improves the conductivity of the transparent SWCNT network. Our work provides a new avenue of assembling individual SWCNTs into macroscopic thin films, which demonstrate great potential for use as transparent electrodes in various flexible electronics.
刊名: SCIENCE ADVANCES
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Jiang, S,Hou, PX,Chen, ML,et al. Ultrahigh-performance Transparent Conductive Films Of Carbon-welded Isolated Single-wall Carbon Nanotubes[J]. Science Advances,2018,4(5):-.

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