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Ag nanoparticles/PPV composite nanofibers with high and sensitive opto-electronic response.

Chen J, Yang P, Wang C, Zhan S, Zhang L, Huang Z, Li W, Wang C, Jiang Z, Shao C - Nanoscale Res Lett (2011)

Bottom Line: The novel Ag nanoparticles/poly(p-phenylene vinylene) [PPV] composite nanofibers were prepared by electrospinning.The Fourier transform infrared spectra suggest that there could be a coordination effect to a certain extent between the Ag atom and the π system of PPV, which is significantly favorable for the dissociation of photoexcitons and the charge transfer at the interface between the Ag nanoparticle and the PPV.The Au top electrode device of the single Ag/PPV composite nanofiber exhibits high and sensitive opto-electronic responses.

View Article: PubMed Central - HTML - PubMed

Affiliation: Faculty of Chemistry, Northeast Normal University, Changchun, 130024, People's Republic of China. huangzh295@nenu.edu.cn.

ABSTRACT
The novel Ag nanoparticles/poly(p-phenylene vinylene) [PPV] composite nanofibers were prepared by electrospinning. The transmission electron microscope image shows that the average diameter of composite fibers is about 500 nm and Ag nanoparticles are uniformly dispersed in the PPV matrix with an average diameter of about 25 nm. The Fourier transform infrared spectra suggest that there could be a coordination effect to a certain extent between the Ag atom and the π system of PPV, which is significantly favorable for the dissociation of photoexcitons and the charge transfer at the interface between the Ag nanoparticle and the PPV. The Au top electrode device of the single Ag/PPV composite nanofiber exhibits high and sensitive opto-electronic responses. Under light illumination of 5.76 mW/cm2 and voltage of 20 V, the photocurrent is over three times larger than the dark current under same voltage, which indicates that this kind of composite fiber is an excellent opto-electronic nanomaterial.

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XRD patterns. a Ag nanoparticles, b Ag/PPV composite fibers, c pure PPV fibers.
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Figure 2: XRD patterns. a Ag nanoparticles, b Ag/PPV composite fibers, c pure PPV fibers.

Mentions: The SAXRD patterns of Ag nanoparticles, Ag/PPV composite nanofibers, and pure PPV nanofibers are shown in Figure 2, using CuKα radiation (λ = 0.154060 nm). The same diffraction peaks at 38.13°, 44.23°, 64.48°, and 77.33°in the SAXRD patterns of Ag particles and Ag/PPV composite fibers can verify the generation of highly crystalline Ag nanoparticles with the face-centered cubic crystal structure (JCPDS card no. 04-0783).


Ag nanoparticles/PPV composite nanofibers with high and sensitive opto-electronic response.

Chen J, Yang P, Wang C, Zhan S, Zhang L, Huang Z, Li W, Wang C, Jiang Z, Shao C - Nanoscale Res Lett (2011)

XRD patterns. a Ag nanoparticles, b Ag/PPV composite fibers, c pure PPV fibers.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211167&req=5

Figure 2: XRD patterns. a Ag nanoparticles, b Ag/PPV composite fibers, c pure PPV fibers.
Mentions: The SAXRD patterns of Ag nanoparticles, Ag/PPV composite nanofibers, and pure PPV nanofibers are shown in Figure 2, using CuKα radiation (λ = 0.154060 nm). The same diffraction peaks at 38.13°, 44.23°, 64.48°, and 77.33°in the SAXRD patterns of Ag particles and Ag/PPV composite fibers can verify the generation of highly crystalline Ag nanoparticles with the face-centered cubic crystal structure (JCPDS card no. 04-0783).

Bottom Line: The novel Ag nanoparticles/poly(p-phenylene vinylene) [PPV] composite nanofibers were prepared by electrospinning.The Fourier transform infrared spectra suggest that there could be a coordination effect to a certain extent between the Ag atom and the π system of PPV, which is significantly favorable for the dissociation of photoexcitons and the charge transfer at the interface between the Ag nanoparticle and the PPV.The Au top electrode device of the single Ag/PPV composite nanofiber exhibits high and sensitive opto-electronic responses.

View Article: PubMed Central - HTML - PubMed

Affiliation: Faculty of Chemistry, Northeast Normal University, Changchun, 130024, People's Republic of China. huangzh295@nenu.edu.cn.

ABSTRACT
The novel Ag nanoparticles/poly(p-phenylene vinylene) [PPV] composite nanofibers were prepared by electrospinning. The transmission electron microscope image shows that the average diameter of composite fibers is about 500 nm and Ag nanoparticles are uniformly dispersed in the PPV matrix with an average diameter of about 25 nm. The Fourier transform infrared spectra suggest that there could be a coordination effect to a certain extent between the Ag atom and the π system of PPV, which is significantly favorable for the dissociation of photoexcitons and the charge transfer at the interface between the Ag nanoparticle and the PPV. The Au top electrode device of the single Ag/PPV composite nanofiber exhibits high and sensitive opto-electronic responses. Under light illumination of 5.76 mW/cm2 and voltage of 20 V, the photocurrent is over three times larger than the dark current under same voltage, which indicates that this kind of composite fiber is an excellent opto-electronic nanomaterial.

No MeSH data available.


Related in: MedlinePlus