Uniform and Conformal Carbon Nanofilms Produced Based on Molecular Layer Deposition

Materials

Peng Yang²  Guizhen Wang²  Zhe Gao²  He Chen¹  Yong Wang¹ 

[1] State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China; E-Mails:;State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan 030001, China; E-Mails:

关键词: carbon nanofilm;    molecular layer deposition;    polyimide;    pyrolysis;   

DOI  :  10.3390/ma6125602

来源: mdpi

【 摘 要 】

Continuous and uniform carbon nanofilms (CNFs) are prepared by pyrolysis of polyimide films which are produced by molecular layer deposition (MLD). The film thickness can be easily controlled at nanometer scale by altering the cycle numbers. During the annealing process at 600 °C, the polyimide film is subject to shrinkage of 70% in thickness. The obtained CNFs do not exhibit a well-graphitized structure due to the low calcination temperature. No clear pore structures are observed in the produced films. CNFs grown on a glass substrate with a thickness of about 1.4 nm shows almost 98% optical transmittance in the visible spectrum range. Au nanoparticles coated with CNFs are produced by this method. Carbon nanotubes with uniform wall thickness are obtained using anodic aluminum oxide as a template by depositing polyimide films into its pores. Our results demonstrate that this method is very effective to coat conformal and uniform CNFs on various substrates, such as nanoparticles and porous templates, to produce functional composite nanomaterials.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.