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 electronhole 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 350ºC. 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 with prolonged-time stability was 3.1%.
Uddin, MJ, Grissom, G, Leal, M, Galvez, V, Trad, T, Touhami, A, Islam, N, Parsons, J, & Moore, HJ. "Self-Aligned Carbon Nanotube Yarns for Multifunctional Optoelectronic Applications." Proceedings of the ASME 2016 International Mechanical Engineering Congress and Exposition. Volume 10: Micro- and Nano-Systems Engineering and Packaging. Phoenix, Arizona, USA. November 11–17, 2016. V010T13A032. ASME. https://doi.org/10.1115/IMECE2016-67441
Proceedings of the ASME's International Mechanical Engineering Congress and Exposition (IMECE) November 11 – 17, 2016 Phoenix, AZ, USA