Data from: High-performance single-walled carbon nanotube transparent conducting film fabricated by using low feeding rate of ethanol solution

We report floating catalyst chemical vapor deposition synthesis of single-walled carbon nanotubes (SWCNTs) for high performance transparent conducting films (TCFs) using low feeding rate of precursor solution. Herein, ethanol acts as carbon source, ferrocene and thiophene as catalyst precursor and growth promoter, respectively. By adopting a low feeding rate of 4 μl/min, the fabricated TCFs present one of the lowest sheet resistances of ca. 78 ohm/sq. at 90% transmittance. Optical characterizations demonstrate that the mean diameter of high quality SWCNTs is up to 2 nm. Additionally, electron microcopy observations provide the evidences that the mean length of SWCNT bundles is as long as 28.4 μm while the mean bundle diameter is only 5.3 nm. Moreover, very few CNT loops can be found in the film. Remarkably, the fraction of individual SWCNTs climbs up to 24.6%. All those morphology data account for the superior optoelectronic performance of our SWCNT TCFs.

本研究报道了采用低前驱体溶液进料速率，通过浮动催化剂化学气相沉积法合成用于高性能透明导电薄膜（transparent conducting films, TCFs）的单壁碳纳米管（single-walled carbon nanotubes, SWCNTs）。其中，乙醇作为碳源，二茂铁与噻吩分别作为催化剂前驱体与生长促进剂。通过采用4 μl/min的低进料速率，所制备的透明导电薄膜在90%透光率下的方阻低至约78 ohm/sq，为目前已报道的最低值之一。光学表征结果显示，高质量单壁碳纳米管的平均直径可达2 nm。此外，电子显微镜观测证实，单壁碳纳米管束的平均长度长达28.4 μm，而平均束直径仅为5.3 nm，且薄膜中极少存在碳纳米管环结构。值得注意的是，单根单壁碳纳米管的占比高达24.6%。上述所有形貌表征数据均印证了本研究制备的单壁碳纳米管透明导电薄膜优异的光电性能。