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Self-Aligned Carbon Nanotube Yarns for Multifunctional Optoelectronic Applications

[+] Author Affiliations
M. Jasim Uddin, Glenn Grissom, Miguel Leal, Veronica Galvez, Tarek Trad, Ahmed Touhami, Nazmul Islam, H. Justin Moore

University of Texas Rio Grande Valley, Brownsville, TX

Jason Parsons

University of Texas Rio Grande Valley, Edinburg, TX

Paper No. IMECE2016-67441, pp. V010T13A032; 5 pages
doi:10.1115/IMECE2016-67441
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 10: Micro- and Nano-Systems Engineering and Packaging
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5064-0
  • Copyright © 2016 by ASME

abstract

In this work, the morphology and electrocatalytic features of carbon nanotube yarns at the structural level allow for enhanced photoconversion efficiency. The energy conversion of electron-hole pairs within the carbon nanotube yarn (CNY) due to the functionalization with nanostructured photoactive TiO2 phases is remarkable. A well oriented anatase TiO2 thin layer (approximately 100 nm) forms at the interfaces of CNY and TiO2 mesoporous film when the sample is precoated and annealed at 350°C. Field Emission Scanning Electron Microscopy (FESEM) images show the integrity and homogeneity of the TiO2 surface, which is indicative of the overall durability of the CNY-based dye sensitized solar cell (DSSC); Coating TiO2 on self-aligned carbon nanotube yarns provides several benefits from their high chemical stability, excellent functionality, nontoxicity and relatively low cost. The maximum photon to current conversion efficiency (ηAM1.5) achieved was 3.1%.

Copyright © 2016 by ASME

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