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Morphology of inkjet printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on surface-treated silica
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10.1116/1.3693415
/content/avs/journal/jvstb/30/2/10.1116/1.3693415
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/30/2/10.1116/1.3693415
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Effects of the driving pulse frequency on drop velocity jetted with a 1 wt.% TIPS-PEN solution.

Image of FIG. 2.
FIG. 2.

(a) Dispersive and polar component of surface energy measured from a solvent cleaned wafer and surface-treated substrates. (b) Surface energy measured after different air exposure times of 2, 4, and 6 h.

Image of FIG. 3.
FIG. 3.

(Color online) Optical microscopy of a printed inkjet droplet array on a surface treated silica substrate using a 2 wt.% TIPS-PEN solution dissolved in o-DCB. Drop spacing was 150 μm. (a) and (d) were printed on solvent-cleaned wafer after air exposure times of 2 and 4 h, respectively; (b) and (e) on an HMDS-treated wafer after air exposure times of 2 and 4 h respectively; (c) and (f) on a UV-ozone cleaned wafer after air exposure times of 2 and 4 h, respectively.

Image of FIG. 4.
FIG. 4.

(a) Wetting envelope contour of an HMDS treated substrate of 0°, 20°, 40°, 60°, 80°, 100°, 120°; (b) 0° contours for substrates after surface treatment.

Image of FIG. 5.
FIG. 5.

(Color online) Optical microscopy of TIPS-pentacene films (0.28 mm × 0.57 mm rectangular pattern printed at 20 μm drop spacing) observed on surface treated silica substrates printed after 2 h (a)–(c) and 4 h (d)–(f) exposure to air. (a) and (d) were printed on solvent cleaned wafer; (b) and (e) on HMDS-treated wafer; (c) and (f) on UV-ozone cleaned wafer. White arrows on (b) and (e) highlight the uncovered oxide surface. The film uniformity of the UV-ozone cleaned surface shows the best film integrity and least geometry deformation. The bar indicates 150 μm.

Image of FIG. 6.
FIG. 6.

XRD diffraction patterns recorded from dot arrays and a thin film of inkjet printed TIPS-pentacene.

Image of FIG. 7.
FIG. 7.

(Color online) Polarized optical microscopy of TIPS-pentacene (a) an isolated dot and (b) portion of a film near the right border. Both were inkjet printed on a UV-ozone treated substrate with a 2 wt.% solution. The film was inkjet printed at 20 μm drop spacing.

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/content/avs/journal/jvstb/30/2/10.1116/1.3693415
2012-03-20
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Morphology of inkjet printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on surface-treated silica
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/30/2/10.1116/1.3693415
10.1116/1.3693415
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