Methods and systems for processing a microelectronic topography
View Patent ↗Methods and systems are provided which are adapted to process a microelectronic topography, particularly in association with an electroless deposition process. In general, the methods may include loading the topography into a chamber, closing the chamber to form an enclosed area, and supplying fluids to the enclosed area. In some embodiments, the fluids may fill the enclosed area. In addition or alternatively, a second enclosed area may be formed about the topography. As such, the provided system may be adapted to form different enclosed areas about a substrate holder. In some cases, the method may include agitating a solution to minimize the accumulation of bubbles upon a wafer during an electroless deposition process. As such, the system provided herein may include a means for agitating a solution in some embodiments. Such a means for agitation may be distinct from the inlet/s used to supply the solution to the chamber.
1. A method of minimizing the accumulation of bubbles upon a wafer during an electroless deposition process, comprising:
loading the wafer into an electroless deposition chamber;
sealing the electroless deposition chamber to form an enclosed area about the wafer;
supplying a deposition solution to the enclosed area via a moveable dispense device arranged above the wafer; and
agitating the deposition solution to create an amount of motion sufficient to form a layer having substantially uniform thickness, wherein the step of agitating comprises moving a brush comprising the moveable dispense device through the deposition solution at a level spaced above the wafer.
2. The method of claim 1 , wherein the step of agitating is sufficient to create laminar agitation within the deposition solution.
3. The method of claim 1 , further comprising pressurizing the enclosed area to a pressure between approximately 5 psi and approximately 100 psi during the electroless deposition process.
4. The method of claim 1 , further comprising pressurizing the enclosed area to a pressure of approximately 50 psi during the electroless deposition process.