Abstract:
Embodiments of collimators and process chambers incorporating same are provided herein. In some embodiments, a collimator for use in a substrate processing chamber includes a ring; an adapter surrounding the ring and having an inner annular wall; and a plurality of spokes extending from the inner annular wall and intersecting at a central axis of the collimator.
Abstract:
The present invention relates to a sputtering target, which comprises a zirconium oxide as a sputtering material, wherein the zirconium oxide -has an oxygen deficiency, compared to the oxygen content of its fully oxidized form, of at least 0.40 wt%, -has a total amount of metal elements other than zirconium of less than 3.0 wt%, based on the total amounts of metal elements including zirconium, and -has an X-ray powder diffraction pattern having a peak P1 at 28.2° +/-0.2° 2-theta, a peak P2 at 31.4° +/-0.2° 2-theta, and a peak P3 at 30.2° +/-0.2° 2-theta.
Abstract:
Methods for finishing a sputtering target to reduce particulation and to reduce burn-in time are disclosed. The surface of the unfinished sputtering target is blasted with beads to remove machining-induced defects. Additional post-processing steps include dust blowing-off, surface wiping, dry ice blasting, removing moisture using hot air gun, and annealing, resulting in a homogeneous, ultra-clean, residual-stress-free, hydrocarbon chemicals-free surface.
Abstract:
Verfahren zur Herstellung einer Beschichtungsquelle zur physikalischen Gasphasenabscheidung, die Beschichtungsquelle umfassend - eine Targetschicht bestehend aus einem wenigstens zweiphasigen Verbundwerkstoff, der eine metallische Phase und wenigstens eine weitere Phase enthält, - eine mechanische Stabilisierungsschicht, welche an einer Seite der Targetschicht mit der Targetschicht verbunden ist, wobei eine erste Pulvermischung, die in ihrer Zusammensetzung dem wenigstens zweiphasigen Verbundwerkstoff entspricht und eine zweite Pulvermischung, die in ihrer Zusammensetzung der mechanischen Stabilisierungsschicht entspricht, in übereinander angeordneten Schichten heiß verdichtet werden.
Abstract:
A method of preparing nanocolumns of zinc oxide (ZnO) on silicon substrates by radio frequency (RF) magnetron sputtering is disclosed. The process is performed using ZnO5 targets of 99.999% purity, in the presence of argon and oxygen gases, RF power of 100 to 300 Watt, at substrate temperature of 300 to 600°C and sputtering pressure of 1 to 10 mTorr. The optimum oxygen percentage over total mixture of argon and oxygen found to deposit ZnO layers of uniform thickness, with dense and fine nanocolumns, is 5 to 10% O2. The nanostructured TCO synthesized can be deposited on top of an LED structure to impose10 rough surface properties, which are useful in improving LEE and reducing light loss. In addition, the average optical transmittance of the ZnO film is 78% in the visible range of 470 nm. The present invention demonstrates advantages such as catalyst-free sputter deposition, formation of dense and uniform ZnO nanocolumn arrays, improved LEE and high transmission in visible spectral range, leading to suitable application in blue InGaN-based15 LEDs.
Abstract:
Embodiments of the present disclosure include methods and apparatus for controlling titanium-tungsten (TiW) target nodule formation. In some embodiments, a target includes: a source material comprising predominantly titanium (Ti) and tungsten (W), formed from a mixture of titanium powder and tungsten powder, wherein a grain size of a predominant quantity of the titanium powder is less than or equal to a grain size of a predominant quantity of the tungsten powder.