Why Semiconductor Manufacturers Prioritize Wet Processing?

Wet processing is an essential aspect of semiconductor manufacturing responsible for a clean wafer material.

FREMONT, CA: Advancements in semiconductors are transforming the industry across verticals. However, manufacturing a high-quality semiconductor chip is not an easy task. Semiconductor fabrication is a crucial step in semiconductor manufacturing and must be accomplished with the utmost care. For instance, the sensitivity of semiconductor fabrication can be determined from the fact that a slight error can significantly impact the efficiency of a semiconductor device. In general, semiconductors require a pure or contaminant-free space for most of the production processes.

Wet processing is another critical segment of the semiconductor manufacturing that is used for etching and cleaning the wafer. According to MultiSource Manufacturing LLC, wet processing is leveraged by the semiconductor manufacturers for the creation of a pure wafer. The wet etching and cleaning of a semiconductor wafer is still the most effective means of creating an exactly engineered format.

The application of wet processing requires a resistant material to be placed onto the surface of the semiconductor wafer as per the engineered format needed for the final product. For various semiconductors, the format is responsible for the creation of a visual roadmap of connected nodes. The wafer is later submerged in or exposed to a liquid or vapor that will remove the exposed wafer and leave the format of the deposited material. In the end, the wafer is cleaned and checked quality before proceeding to the next stage of semiconductor manufacturing.

There are various industrial applications of wet processing as well. Various multi-chamber cleaning tools utilize ozonated water as a wafer cleaning material. Such tools might have up to a dozen individual single-wafer chambers that operate in an intermittent fashion. The tool ensures a continuous flow of ozonated wafer to each chamber and diverts the flow to drain when the cleaning process is not operational. Thus, wet processing enables such plants to operate with a high level of efficiency.

Wet processing is a key aspect of semiconductor manufacturing as the success and purity of the manufactured product, as well as the efficiency of a semiconductor device, relies on it.