Limits...
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.

No MeSH data available.


Related in: MedlinePlus

PL (λex = 350 nm) and PLE (λem = 550 nm) spectra. a Pure PPV nanofibers, b composite nanofibers.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3211167&req=5

Figure 5: PL (λex = 350 nm) and PLE (λem = 550 nm) spectra. a Pure PPV nanofibers, b composite nanofibers.

Mentions: Figure 5 shows the PL (λex = 350 nm) and PLE (λem = 550 nm) spectra of the pristine PPV nanofibers and the composite nanofibers. The positions of the PPV characteristic peaks (at 515 and 550 nm) did not change, which indicates that the functional structure of PPV in the composite fibers is kept, which is consistent with the FTIR result. However, in the composite fibers' spectrum, the relative enhancement of 515-nm emission peaks, compared with the 550-nm emission peaks, indicates that the addition of Ag nanopartilces decreases the reabsorption among PPV chains.


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)

PL (λex = 350 nm) and PLE (λem = 550 nm) spectra. a Pure PPV nanofibers, b composite nanofibers.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 5: PL (λex = 350 nm) and PLE (λem = 550 nm) spectra. a Pure PPV nanofibers, b composite nanofibers.
Mentions: Figure 5 shows the PL (λex = 350 nm) and PLE (λem = 550 nm) spectra of the pristine PPV nanofibers and the composite nanofibers. The positions of the PPV characteristic peaks (at 515 and 550 nm) did not change, which indicates that the functional structure of PPV in the composite fibers is kept, which is consistent with the FTIR result. However, in the composite fibers' spectrum, the relative enhancement of 515-nm emission peaks, compared with the 550-nm emission peaks, indicates that the addition of Ag nanopartilces decreases the reabsorption among PPV chains.

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