PAM-XIAMEN can offer single side/double side polished silicon wafer or custom polished silicon wafer. More details, please refer to the table as follows:

1. Polished Silicon Wafer List

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2.What is a Polished Silicon Wafer?

Polished Silicon wafer is the most common semiconductor and the most widely used in the electronic and technology sector, which is a key component in integrated circuits, during the growth process intentional additions of dopants can be added to the to change the purity of the silicon depending on what the purpose of it will be, boron, aluminum, nitrogen, gallium and indium are common silicon dopants. Depending on what level the silicon has been doped, the semiconductor can be considered extrinsic or degenerate. Extrinsic would be lightly to moderately doped whereas degenerate semiconductors act more as conductors because of the high levels of doping that occurs during the fabrication.

3.What is Polished Silicon Wafer Used For?

Silicon wafer’s primary use is in integrated circuits. Integrated circuits power many of the devices that modern society uses every day. Computers and smartphones are just two of the devices that are dependent on this technology. Although other semiconductors have been tested overtime, polished monocrystalline silicon wafer has proved to be stable option. Other uses include sensors, such as the tire pressure sensor system, and solar cells. Silicon wafers absorb the photons in sunlight and this in turn create electricity.

4. How are Polished Silicon Wafers Made?

Growth of Silicon Ingot: single crystal silicon wafers grow via the Czochralski (CZ) and FZ method,CZ ingot growth requires chunks of virgin polycrystalline silicon, depending on the dopant, the ingot becomes a P or N type ingot (boron: P type; Phosphorus, antimony, arsenic: N type).

Slicing: Once the ingot is fully-grown, it is ground to a rough size diameter that is slightly larger than the target diameter of the final silicon wafer. The ingot has a notch or flat cut into it, the ingot proceeds to slicing. The diamond edge saw helps to minimize damage to the wafers, thickness variation, and bow and warp defects.
After the wafers have been sliced, the lapping process begins.
Cleaning:The final and most crucial step in the manufacturing process is polishing a silicon wafer. This process takes place in a clean room. Clean rooms have a rating system that ranges from Class 1 to Class 10,000. These particles are not visible to the naked eye and in an uncontrolled atmosphere, the workers must wear clean room suits that cover their body from head to toe and do not collect or carry any particles.
Polishing: Most prime grade silicon wafers go through 2-3 stages of polishing, using progressively finer slurries or polishing compounds. The polishing process occurs in two steps, which are stock removal and final chemical mechanical polish (CMP). Both processes use polishing pads and polishing slurry. The stock removal process removes a very thin layer of silicon and is necessary to produce a wafer surface that is damage-free. After polishing, the one side or double side polished silicon wafers proceed to a final cleaning stage that uses a long series of clean baths. This process removes surface particles, trace metals, and residues. Oftentimes a backside scrub is done to remove even the smallest particles.
Packaging: Once the wafers complete the final cleaning step, engineers sort them by specification and inspect them under high intensity lights or laser-scanning systems. This detects unwanted particles or other defects that may have occurred during fabrication. All wafers that meet the proper specifications are packaged in cassettes and sealed with tape. The wafers ship in a vacuum-sealed plastic bag with an airtight foil outer bag. This ensures that no particles or moisture enters the cassette upon leaving the clean room.

5. Are You Looking for polished silicon wafer?

PAM-XIAMEN is the company you want to find, which offer polished silicon wafer or custom polished silicon wafer with low roughness but high quality. Send us enquiry to learn more about the polished silicon wafer, our group team can give you polished silicon wafer and technology support.

자세한 내용은 이메일로 문의해 주세요.victorchan@powerwaywafer.com 과 powerwaymaterial@gmail.com.