Patent classifications
H01L21/0209
Method for treating substrate, method for manufacturing semiconductor device, and kit for treating substrate
The present invention provides a method for treating a substrate, which can remove transition metal-containing substances on a substrate with high efficiency while inhibiting cerium from remaining on the surface of the treated substrate. Furthermore, the present invention provides a method for manufacturing a semiconductor device including the method for treating a substrate, and a kit for treating a substrate that is applicable to the method for treating a substrate. The method for treating a substrate according to an embodiment of the present invention includes a step A of removing a transition metal-containing substance on a substrate by using a chemical solution, which includes a cerium compound and one or more pH adjusters selected from the group consisting of nitric acid, perchloric acid, ammonia, and sulfuric acid, for the substrate having the transition metal-containing substance, and a step B of performing a rinsing treatment on the substrate obtained by the step A by using one or more rinsing solutions selected from the group consisting of a solution including hydrogen peroxide and an acidic aqueous solution which is other than hydrofluoric acid, nitric acid, an aqueous perchloric acid solution, an aqueous oxalic acid solution, and a mixed aqueous solution of these and does not include hydrogen peroxide after the step A.
Electroplating and post-electrofill systems with integrated process edge imaging and metrology systems
Disclosed herein are electroplating systems for forming a layer of metal on a wafer which include an electroplating module and a wafer edge imaging system. The electroplating module may include a cell for containing an anode and an electroplating solution during electroplating, and a wafer holder for holding the wafer in the electroplating solution and rotating the wafer during electroplating. The wafer edge imaging system may include a wafer holder for holding and rotating the wafer through different azimuthal orientations, a camera oriented for obtaining multiple azimuthally separated images of a process edge of the wafer while it is held and rotated (the process edge corresponding to the outer edge of the layer of metal formed on the wafer), and image analysis logic for determining an edge exclusion distance, wherein the edge exclusion distance is a distance between the wafer's edge and the process edge.
Substrate processing method and substrate processing apparatus
A substrate processing method is implemented in a substrate processing apparatus including a substrate holding and rotating unit having a spin base rotatable about a predetermined vertical axis, and a processing cup surrounding the substrate holding and rotating unit and arranged to receive processing liquid splattering from the substrate rotated by the substrate holding and rotating unit, the substrate processing method including a substrate rotating step of rotating the spin base to rotate the substrate about the vertical axis at a predetermined liquid processing speed and, in parallel with the substrate rotating step, a processing liquid supplying step of supplying processing liquid onto the lower surface of the substrate at a predetermined first flow rate and supplying processing liquid onto the upper surface of the substrate at a second flow rate that is higher than the first flow rate.
Method of selectively depositing floating gate material in a memory device
Undesirable metal contamination from a selective metal deposition process can be minimized or eliminated by employing a first material layer on a bevel and a back side of a substrate, while providing a second material layer only on a front side of the substrate. The first material layer and the second material layer are selected such that a selective deposition process of a metal material provides a metal material portion only on the second material layer, while no deposition occurs on the first material layer or isolated islands of the metal material are formed on the first material layer. Any residual metal material can be removed from the bevel and the back side by a wet etch to reduce or prevent metal contamination from the deposited metal material.
Manufacturing method of semiconductor device
It is to provide a manufacturing method of a semiconductor device including the following step of: preparing a semiconductor substrate having a silicon nitride film on the rear surface; forming an interlayer insulating film having a via hole on the main surface of the semiconductor substrate; and forming a via-fill selectively within the via hole. The method further includes the steps of: performing the wafer rear surface cleaning to expose the surface of the silicon nitride film formed on the rear surface of the semiconductor substrate; and thereafter, forming a photoresist film made of chemical amplification type resist on the interlayer insulating film and the via-fill over the main surface of the semiconductor substrate, in which the semiconductor substrate is stored in an atmosphere with the ammonium ion concentration of 1000 μg/m.sup.3 and less.
Systems and Methods for In-Situ Wafer Edge and Backside Plasma Cleaning
A lower electrode plate receives radiofrequency power. A first upper plate is positioned parallel to and spaced apart from the lower electrode plate. A grounded second upper plate is positioned next to the first upper plate. A dielectric support provides support of a workpiece within a region between the lower electrode plate and the first upper plate. A purge gas is supplied at a central location of the first upper plate. A process gas is supplied to a periphery of the first upper plate. The dielectric support positions the workpiece proximate and parallel to the first upper plate, such that the purge gas flows over a top surface of the workpiece so as to prevent the process gas from flowing over the top surface of the workpiece, and so as to cause the process gas to flow around a peripheral edge of the workpiece and below the workpiece.
CLEANING METHOD OF SEMICONDUCTOR STRUCTURE
A cleaning method of a semiconductor structure is provided. The method includes providing a substrate, where the substrate includes a functional surface and a back surface that is opposite to the functional surface. The method also includes forming a fluid passivation film on the functional surface of the substrate. In addition, the method includes after forming the fluid passivation film, performing a first charge removal treatment on the functional surface of the substrate through a wet cleaning process. Further, the method includes after performing the first charge removal treatment, performing a main cleaning treatment on the functional surface and the back surface of the substrate.
PROCESS SOLUTION FOR POLYMER PROCESSING
The present disclosure relates to a process solution for polymer processing, containing a polar aprotic solvent, a fluorine-based compound, and a sulfur-containing compound. The process solution for polymer processing may have excellent storage stability and minimize damage to the metal layer while improving an ability to remove the adhesive polymer remaining on a circuit surface of a semiconductor wafer.
Substrate processing apparatus and substrate processing method
A substrate processing apparatus includes: a spin base rotatable in a horizontal plane about a centered rotary axis; a holder to hold a substrate above the spin base; a lower surface processing unit to discharge a processing liquid toward a lower surface of the substrate held by the holder. The holder includes: a plurality of first abutting members that abut the substrate from a position obliquely below said substrate and that hold the substrate in a horizontal posture in a position spaced from an upper surface of said spin base; a plurality of second abutting members that abut the substrate from a position lateral to said substrate and that hold said substrate in a horizontal posture in a position spaced from the upper surface of said spin base. A switching mechanism switches between a first holding condition state where the first abutting members hold the substrate and a second holding condition state where the second abutting members hold the substrate; wherein, in the second holding condition state, the first abutting members are spaced from the substrate, and in the first holding condition state, an upper surface of the substrate is in a position above an upper end surface of each of the first and second abutting members are spaced from the substrate.
Wafer cleaning system and method
A wafer cleaning system and method are provided. A brush element is configured to clean a backside of the wafer. The backside has a clear area and an unclear area, and some contaminants are located in the unclear area. A control device performs a first cleaning process to the brush element when the brush element is located at the clear area, and the control device performs a second cleaning process when the brush element is located at the unclear area. The contaminants are cleaned by an enhanced cleaning process. Since the contaminants are cleaned, the backside of the wafer is flatter, and quality of the exposed photoresist on the wafer is improved.