Selective Emitters for Thermophotovoltaics: Erbia-modified Electrospun Titania Nanofibers
Titania nanofibers were synthesized by electrospinning and characterized with scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The nanofibers were annealed to 773 K to achieve the anatase titania crystal structure, and to 1173 K to obtain the rutile phase. In order to create erbia-containing titania nanofibers, erbium (III) oxide particles were added to the pre-cursor solution before electrospinning. After pyrolysis the titania nanofibers supported and encapsulated the erbia particles. Temperature-dependent near-infrared emission spectra demonstrate that the erbia-containing nanofibers emit selectively in the range 6000–7000 cm−1. Because of their large surface to volume ratios and narrow-band optical emission, these nanofibers can be used as selective emitters for thermophotovoltaic applications.
Solar Energy Materials and Solar Cells
Tomer, V.; Teye-Mensah, R.; Tokash, J. C.; Stojilovic, N.; Kataphinan, W.; Evans, Edward; Chase, George G.; Ramsier, R. D.; Smith, D. J.; and Reneker, D. H., "Selective Emitters for Thermophotovoltaics: Erbia-modified Electrospun Titania Nanofibers" (2005). Chemical and Biomolecular Engineering Faculty Research. 421.