Limits...
Anisotropic TixSn1-xO2 nanostructures prepared by magnetron sputter deposition.

Chen S, Li Z, Zhang Z - Nanoscale Res Lett (2011)

Bottom Line: Regular arrays of TixSn1-xO2 nanoflakes were fabricated through glancing angle sputter deposition onto self-assembled close-packed arrays of 200-nm-diameter polystyrene spheres.The reflectance measurements showed that the melon seed-shaped nanoflakes exhibited optimal properties of antireflection in the entire visible and ultraviolet region.In addition, we determined their anisotropic reflectance in the direction parallel to the surface of nanoflakes and perpendicular to it, arising from the anisotropic morphology.

View Article: PubMed Central - HTML - PubMed

Affiliation: State Key Laboratory of New Ceramic and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. zcli@tsinghua.edu.cn.

ABSTRACT
Regular arrays of TixSn1-xO2 nanoflakes were fabricated through glancing angle sputter deposition onto self-assembled close-packed arrays of 200-nm-diameter polystyrene spheres. The morphology of nanostructures could be controlled by simply adjusting the sputtering power of the Ti target. The reflectance measurements showed that the melon seed-shaped nanoflakes exhibited optimal properties of antireflection in the entire visible and ultraviolet region. In addition, we determined their anisotropic reflectance in the direction parallel to the surface of nanoflakes and perpendicular to it, arising from the anisotropic morphology.

No MeSH data available.


Schematic illustration of the relative positions of the substrates, Ti targets and SnO2 target from (a) the bird's eye view and (b) the side view.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3211414&req=5

Figure 1: Schematic illustration of the relative positions of the substrates, Ti targets and SnO2 target from (a) the bird's eye view and (b) the side view.

Mentions: The TixSn1-xO2 nanostructures were prepared on Si(001) substrates that were patterned using 200-nm-diameter hexagonal close-packed polystyrene microspheres in an ultrahigh vacuum magnetron sputter deposition system. TixSn1-xO2 depositions were carried out using a 6-cm-diameter Ti target (99.99% pure) and a 6-cm-diameter SnO2 target (99.9% pure) mounted at an angle of 120° with respect to each other, with the substrate backed against the Ti target, as shown in Figure 1a, b. The deposition angle α, equaling θ1 + θ2 (defined in Figure 1b), was selected as 85°. Sputtering was carried out at 0.15 Pa which was held constant during all depositions in 99.999% pure Ar. No external substrate heating was applied. Power-regulated DC and RF power supplies were employed to provide the discharge currents of 0.15, 0.20, and 0.25 A, respectively (for three samples, 1#, 2#, and 3#) at 340 V for Ti, and a radio frequency current of 130 mA at 500 V for SnO2. The TixSn1-xO2 nanostructures were obtained with simultaneous deposition from sputtering sources like Ti and SnO2 onto a stationary substrate. The morphology of all the samples was examined by scanning electron microscopy (SEM), with their structure identified by X-ray diffraction (XRD) analysis, and the reflectance measured with a spectrophotometer.


Anisotropic TixSn1-xO2 nanostructures prepared by magnetron sputter deposition.

Chen S, Li Z, Zhang Z - Nanoscale Res Lett (2011)

Schematic illustration of the relative positions of the substrates, Ti targets and SnO2 target from (a) the bird's eye view and (b) the side view.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211414&req=5

Figure 1: Schematic illustration of the relative positions of the substrates, Ti targets and SnO2 target from (a) the bird's eye view and (b) the side view.
Mentions: The TixSn1-xO2 nanostructures were prepared on Si(001) substrates that were patterned using 200-nm-diameter hexagonal close-packed polystyrene microspheres in an ultrahigh vacuum magnetron sputter deposition system. TixSn1-xO2 depositions were carried out using a 6-cm-diameter Ti target (99.99% pure) and a 6-cm-diameter SnO2 target (99.9% pure) mounted at an angle of 120° with respect to each other, with the substrate backed against the Ti target, as shown in Figure 1a, b. The deposition angle α, equaling θ1 + θ2 (defined in Figure 1b), was selected as 85°. Sputtering was carried out at 0.15 Pa which was held constant during all depositions in 99.999% pure Ar. No external substrate heating was applied. Power-regulated DC and RF power supplies were employed to provide the discharge currents of 0.15, 0.20, and 0.25 A, respectively (for three samples, 1#, 2#, and 3#) at 340 V for Ti, and a radio frequency current of 130 mA at 500 V for SnO2. The TixSn1-xO2 nanostructures were obtained with simultaneous deposition from sputtering sources like Ti and SnO2 onto a stationary substrate. The morphology of all the samples was examined by scanning electron microscopy (SEM), with their structure identified by X-ray diffraction (XRD) analysis, and the reflectance measured with a spectrophotometer.

Bottom Line: Regular arrays of TixSn1-xO2 nanoflakes were fabricated through glancing angle sputter deposition onto self-assembled close-packed arrays of 200-nm-diameter polystyrene spheres.The reflectance measurements showed that the melon seed-shaped nanoflakes exhibited optimal properties of antireflection in the entire visible and ultraviolet region.In addition, we determined their anisotropic reflectance in the direction parallel to the surface of nanoflakes and perpendicular to it, arising from the anisotropic morphology.

View Article: PubMed Central - HTML - PubMed

Affiliation: State Key Laboratory of New Ceramic and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. zcli@tsinghua.edu.cn.

ABSTRACT
Regular arrays of TixSn1-xO2 nanoflakes were fabricated through glancing angle sputter deposition onto self-assembled close-packed arrays of 200-nm-diameter polystyrene spheres. The morphology of nanostructures could be controlled by simply adjusting the sputtering power of the Ti target. The reflectance measurements showed that the melon seed-shaped nanoflakes exhibited optimal properties of antireflection in the entire visible and ultraviolet region. In addition, we determined their anisotropic reflectance in the direction parallel to the surface of nanoflakes and perpendicular to it, arising from the anisotropic morphology.

No MeSH data available.