摘要:
Slurry compositions and chemically activated CMP methods for polishing a substrate having a silicon carbide surface using such slurries. In such methods, the silicon carbide surface is contacted with a CMP slurry composition that comprises i) a liquid carrier and ii) a plurality of particles having at least a soft surface portion, wherein the soft surface portion includes a transition metal compound that provides a Mohs hardness ≦6, and optionally iii) an oxidizing agent. The oxidizing agent can include a transition metal. The slurry is moved relative to the silicon carbide comprising surface, wherein at least a portion of the silicon carbide surface is removed.
摘要:
A cyclic method of chemical mechanical polishing (CMP) a wafer having a surface includes placing the wafer on a platen in a CMP apparatus and then performing a multi-step CMP comprising process. The multi-step CMP process includes delivering a first chemical composition onto the wafer while on the platen for a first time duration, and without removing the wafer from the platen, delivering a second chemical composition different from the first composition onto the wafer for a second time duration after the first time duration. The multi-step CMP comprising process includes CMP removal using a slurry during one of the first and second time durations and a non-polishing process during the other of the first and second time durations. The multi-step CMP comprising process is repeated a plurality of times.
摘要:
A method of chemically-mechanically polishing a substrate having a Group III-nitride surface includes providing a chemical-mechanical polishing slurry composition. The slurry composition includes a slurry solution including a liquid carrier and an oxidizer including a transition metal or a per-based compound. The slurry solution includes at least one component that reacts with the Group III-nitride surface to form a softened Group III-nitride surface. The Group III-nitride comprising surface is contacted with the slurry composition by a pad to form the softened Group III-nitride surface. The pad is moved relative to the softened Group III-nitride surface, wherein at least a portion of the softened Group III-nitride surface is removed.
摘要:
A cyclic method of chemical mechanical polishing (CMP) a wafer having a surface includes placing the wafer on a platen in a CMP apparatus and then performing a multi-step CMP comprising process. The multi-step CMP process includes delivering a first chemical composition onto the wafer while on the platen for a first time duration, and without removing the wafer from the platen, delivering a second chemical composition different from the first composition onto the wafer for a second time duration after the first time duration. The multi-step CMP comprising process includes CMP removal using a slurry during one of the first and second time durations and a non-polishing process during the other of the first and second time durations. The multi-step CMP comprising process is repeated a plurality of times.
摘要:
Slurry compositions and chemically activated CMP methods for polishing a substrate having a silicon carbide surface using such slurries. In such methods, the silicon carbide surface is contacted with a CMP slurry composition that comprises i) a liquid carrier and ii) a plurality of particles having at least a soft surface portion, wherein the soft surface portion includes a transition metal compound that provides a Mohs hardness ≦6, and optionally iii) an oxidizing agent. The oxidizing agent can include a transition metal. The slurry is moved relative to the silicon carbide comprising surface, wherein at least a portion of eth silicon carbide surface is removed.
摘要:
A method of chemical-mechanical fabrication (CMF) for forming articles having tilted surface features. A substrate is provided having a patterned surface including two different layer compositions or a non-planar surface having at least one protruding or recessed feature, or both. The patterned surface are contacted with a polishing pad having a slurry composition, wherein a portion of surface being polished polishes at a faster polishing rate as compared to another portion to form at least one tilted surface feature. The tilted surface feature has at least one surface portion having a surface tilt angle from 3 to 85 degrees and a surface roughness
摘要:
A method of chemically-mechanically polishing a substrate having a Group III-nitride surface includes providing a chemical-mechanical polishing slurry composition. The slurry composition includes a slurry solution including a liquid carrier and an oxidizer including a transition metal or a per-based compound. The slurry solution includes at least one component that reacts with the Group III-nitride surface to form a softened Group III-nitride surface. The Group III-nitride comprising surface is contacted with the slurry composition by a pad to form the softened Group III-nitride surface. The pad is moved relative to the softened Group III-nitride surface, wherein at least a portion of the softened Group III-nitride surface is removed.
摘要:
Slurry compositions and chemically activated CMP methods for polishing a substrate having a silicon carbide surface using such slurries. In such methods, the silicon carbide surface is contacted with a CMP slurry composition that comprises i) a liquid carrier and ii) a plurality of particles having at least a soft surface portion, wherein the soft surface portion includes a transition metal compound that provides a Mohs hardness ≦6, and optionally iii) an oxidizing agent. The oxidizing agent can include a transition metal. The slurry is moved relative to the silicon carbide comprising surface, wherein at least a portion of the silicon carbide surface is removed.
摘要:
A solid state light source includes a substrate having a top surface and a bottom surface, and at least one optically active layer on the top surface of the substrate. At least one of the top surface, the bottom surface, the optically active layer or an emission surface on the optically active layer includes a patterned surface that includes a plurality of tilted surface features that have a high elevation portion and a low elevation portion that define a height (h), and wherein the plurality of tilted surface features define a minimum lateral dimension (r). The plurality of tilted surface features provide at least one surface portion that has a surface tilt angle from 3 to 85 degrees. The patterned surface has a surface roughness
摘要:
A solid state light source includes a substrate having a top surface and a bottom surface, and at least one optically active layer on the top surface of the substrate. At least one of the top surface, the bottom surface, the optically active layer or an emission surface on the optically active layer includes a patterned surface that includes a plurality of tilted surface features that have a high elevation portion and a low elevation portion that define a height (h), and wherein the plurality of tilted surface features define a minimum lateral dimension (r). The plurality of tilted surface features provide at least one surface portion that has a surface tilt angle from 3 to 85 degrees. The patterned surface has a surface roughness