Electrical Behavior of Nonstoichiometric TiN_(1+x) Nanofibers by Electrospinning

摘要

Nonstoichiometric TiN_(1+x)(x = 0-0.26) nanofibers have been successfully fabricated by electrospinning versus ammonifica-tion process. Electrical properties of TiN_(1+x) nanofibers were investigated with respect to the stoichiometric deviation degree x. The electric conductivity of the TiN_(1+x) nanofiber reached as high as 121.1 S/cm with x = 0.03. When stoichiometric deviation degree increased, the electric conductivity decreased and nonlinear Ⅰ-Ⅴ character was shown in these TiN_(1+x) nanofibers. The nonohmic electric characters of the nonstoichiometric TiN_(1+x) nanofiber prepared by electrospinning combined with ammoniation demonstrated a promising candidate of one-dimensional material applied in electric devices such as varis-tors or microswitch.