Facing target sputtering &#; a technique in which two magnetron sources are positioned opposite one another and at right angles to the substrate. The source configuration (having two sputter targets face directly toward one another) provides a geometry in which any high-energy reflected particles are directed to the opposing cathode and not the substrate.
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This geometry &#; when paired with the appropriate source magnetics &#; also confines the plasma between the two sources and reduces the electron density which is allowed to reach the substrate. The result is a sputtering technology which minimizes both the physical and thermal damage of soft or organic layers.
Sputtering deposition is one of the most common processes used for thin film deposition: the coating of a surface with a layer of material ranging from fractions of a nanometer to several micrometers in thickness. Thin film deposition is essential to manufacturing of many modern electronic and optical components
Sputtering deposition uses a plasma, usually formed from a non-reactive gas, to bombard a target---a source of the material to be deposited as a thin film---and knock the atoms of the target material out of its bulk. The ejected atoms then land on the substrate and form a thin film. Since the target does not need to be heated, the technique is very flexible for a wide range of applications. Targets can be composed of pure elements as well as compounds or mixtures.
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Our standard target sizes range from 1" to 8" in diameter and from 2mm to 1/2" thick. We can also provide targets outside this range in addition to just about any size rectangular, annular, or oval-shaped target. Other shapes are available by request.
For large area thin film deposition, American Elements produces rotatable sputtering targets via casting or plasma deposition onto a tubular substrate. Rotatable sputtering targets are available up to 1,000 mm in length and can be produced from a number of single element, oxide and alloy materials for use in many applications where large film areas are required, such as photovoltaic device fabrication. All machined pieces are produced by casting oversized blanks, and machining down to required specifications. They are usually machined to tolerances of +0.010"/-0" on diameter, length or width, and +/-0.005" on thickness. Larger targets are also finished to a flatness within 0.015". We can accommodate tighter tolerances upon request.
American Elements casts any of the rare earth metals and most other advanced material into rod, bar or plate form, as well as other machined shapes. All as-cast rods, bars and plates are produced from either the pure metal Ingots or sublimed metals. We have a variety of standard sized rod molds, from a minimum of 1/4" diameter up to 3" diameter for most rod needs. Plates are also offered in standard thicknesses, from 1/4" thick to 1" thick. Maximum rod lengths and maximum plate sizes are dependent on melt capacity and furnace room. Small diameter rods may have only a 4"-6" maximum cast length, whereas larger diameter rods may be cast up to about 16" long. Plate sizes can be cast up to a size of 24" x 16". As-cast rods or plates are saw-cut to length or final dimensions, and the metal surface may have visible flow marks.
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