Carbon Nanomaterials for Optical Absorber Applications

Sensors & Transducers

Michael EASTWOOD¹  Robert GREEN¹  Krikor MEGERIAN¹  James COLES¹  Anupama KAUL¹  Thomas PAGANO¹  Mehmet DOKMECI²  Prabhakar BANDARU³ 

[1] Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA;Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA;Jacobs School of Engineering, University of California-San Diego, La Jolla, CA 92093, USA;

关键词: Carbon nanomaterials;    Optical absorbers;    Nanoabsorbers;    MWCNTs;    PECVD;   

DOI  :  

来源: DOAJ

【 摘 要 】

Optical absorbers based on vertically aligned multi-walled carbon nanotubes (MWCNTs), synthesized using electric-field assisted growth, are described here that show an ultra-low reflectance, 100X lower compared to the benchmark, a diffuse metal black - Au-black - from wavelength l ~ 350 nm – 2500 nm. The reflectance of the MWCNT arrays was measured to be as low as 0.02 % at 2 mm in the infra-red (IR). Growth conditions were optimized for the realization of high-areal density arrays of MWCNTs using a plasma-based chemical vapor deposition (CVD) process. Such high efficiency absorbers are particularly attractive for radiometry, as well as energy harnessing applications. Optical modeling calculations were conducted that enabled a determination of the extinction coefficient in the films.

【 授权许可】

Unknown