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 or...

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Published inSolar energy materials and solar cells Vol. 85; no. 4; pp. 477 - 488
Main Authors Tomer, V., Teye-Mensah, R., Tokash, J.C., Stojilovic, N., Kataphinan, W., Evans, E.A., Chase, G.G., Ramsier, R.D., Smith, D.J., Reneker, D.H.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.02.2005
Elsevier
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Summary: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.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2004.04.019