High-transparent and Flexible Au Nanofiber Films†

doi:10.7503/cjcu20141072

Abstract

Abstract:

High-transparent and flexible Au nanofiber films were successfully fabricated by a combination of electrospinning technique and ion sputtering technology, in the presence of polyvinylpyrrolidone(PVP) nanofiber films as template. The as-prepared Au nanofiber films show typical interconnected nonwoven nanofiber networks, and the average diameters of Au nanofibers range from 291 nm to 322 nm. When sputtering time is 75 s, the average transmittance of the as-prepared Au nanofiber film in visible region is 92%, the reflectance in near infrared region is about 7%, and the resistivity is 2.9×10^-3 Ω·cm. Importantly, after 500 cycles of bending, the as-prepared Au nanofiber films show no obvious electrical degradation. The Au nanofiber films with transparent and near-IR reflective properties may provide promising applications for flexible liquid crystal displays, solar cells and flexible and transparent functional electronics.

Key words: Electrospinning, Au nanofiber, Ion sputtering, High-transparent flexible conducting film

CLC Number:

O614

TrendMD:

KONG Zhuang, LU Xianyong, ZHU Ying, JIANG Lei. High-transparent and Flexible Au Nanofiber Films^†[J]. Chem. J. Chinese Universities, 2015, 36(4): 614.

Figures/Tables 5

Fig.1 Schematic illustration for fabrication of Au nanofiber films

Fig.2 SEM images of electrospun PVP nanofibers(A, B) and Au nanofiber films with sputtering time of 75 s(C), 90 s(D), 105 s(E) and 120 s(F)

Fig.3 XRD pattern(A), EDS spectrum(B) and corresponding elemental mapping(C) of Au nanofiber film

Fig.4 Transmittance spectra of Au nanofiber films in visible region(A) and reflection spectra of Au nanofiber film in near infrared region(B) Sputtering time/s: a. 75; b. 90; c. 105; d. 120.

Fig.5 Digital photos of conducting Au nanofiber film(A) and folded Au nanofiber film(B), sheet resistance of the Au nanofiber film at different bending cycles(C) and a digital photo of conducting Au nanofiber film after 500 cycles of bending(D) Sputtering time of the Au nanofiber film: 120 s.

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