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Layered photoconductive polymers: Anisotropic morphology and correlation with photorefractive reflection grating response
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10.1063/1.2180768
/content/aip/journal/jcp/124/10/10.1063/1.2180768
http://aip.metastore.ingenta.com/content/aip/journal/jcp/124/10/10.1063/1.2180768

Figures

Image of Scheme 1.
Scheme 1.

Investigated photorefractive composites based on layered photoconductive polymer PPT-CZ10 with different chromophores DDCST and PDCST, and sensitizer . No plasticizer are added.

Image of Scheme 2.
Scheme 2.

Synthesis of the investigated PPT-CZ polymer.

Image of FIG. 1.
FIG. 1.

DSC thermograms of PPT-CZ10 polymers with different molecular weights: from top to bottom, , 0.9, and 0.6 (heating rate of ).

Image of FIG. 2.
FIG. 2.

X-ray diffraction data for layered structured PPT-CZ10 polymer. (a) Diffraction patterns of melt film (top) and melt-spun fiber (bottom) with . (b) X-ray intensity profile of the solution casted films at room temperature with different molecular weights: from top to bottom, , 0.9, 1.9, and 2.8.

Image of FIG. 3.
FIG. 3.

Illustration of the layered arrangement and the definition of the , , and axes of the layered mesophase structure of PPT-CZ10.

Image of FIG. 4.
FIG. 4.

Flat-plate x-ray diffraction patterns of the layered photorefractive samples with at room temperature with the primary beam perpendicular (plane) or parallel (edge) to the film surface: from top to bottom, and .

Image of FIG. 5.
FIG. 5.

Schematic illustration of shear-induced anisotropy of granular domain structures by the squeezing flow during the photorefractive sample preparation.

Image of FIG. 6.
FIG. 6.

Electric field dependence of two-beam coupling gain (a) and diffraction efficiency (b) for -polarized writing beams at in reflection grating geometry: (closed circles) and (open squares). The solid curves are theoretical according to (a) and (b) (see text for more details).

Image of FIG. 7.
FIG. 7.

Investigated photorefractive composites based on layered photoconductive polymer PPT-CZ10 with different chromophores DDCST and PDCST, and sensitizer . No plasticizer was added.

Image of FIG. 8.
FIG. 8.

Synthesis of the investigated PPT-CZ polymer.

Tables

Generic image for table
Table I.

Relative degree of layered crystallinity with the plane and the edge , dark conductivity , specific photoconductivity , two-wave mixing gain coefficient , diffraction efficiency , and response rate for the investigated photorefractive composites based on layered photoconductive polymers in reflection grating geometry .

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/content/aip/journal/jcp/124/10/10.1063/1.2180768
2006-03-13
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Layered photoconductive polymers: Anisotropic morphology and correlation with photorefractive reflection grating response
http://aip.metastore.ingenta.com/content/aip/journal/jcp/124/10/10.1063/1.2180768
10.1063/1.2180768
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