Ultra Flat Wafers | What are the Different Types of Wafers?


October 12, 2018

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Wafers are found in pretty much all types of technology. A wafer serves the purpose of fabricating integrated circuits. When it comes to wafers, there are several different types available, all with distinct functions. Let’s take a look at some of the different types of wafers out there, including ultra flat wafers.

Types of Wafers

Polished Wafers – Polished wafers are silicon wafers with one or both sides polished to a mirror surface.Hi Wafer – A Hi wafer is a wafer that is heat treated in a hydrogen ambient. As a result, this wafer has an excellent gate oxide quality.

Diffused Wafers - Diffused wafers are employed in electric power control devices at a high rate. They then contribute to improving the efficiency of energy consumption.

Epitaxial Wafers - Epitaxial wafers are used to achieve surface integrity by putting various thickness epitaxial silicon layers. Thin versions are then commonly used for leading-edge MOS devices. On the other hand, thick and multi-layered versions are used for the devices mainly to control electric power.

SOI Wafer - SOI wafers are widely used in power devices and MEMS to achieve high breakdown voltage, low energy consumption and high performance of MEMS.

AT Wafer – AT wafers are heat treated in Argon gas ambient to prevent out-diffusion of dopant from the wafer surface and to have flat resistivity profile in depth.

Are You Looking for Ultra Flat Wafers?

At Wafer World, we offer a variety of wafers, including ultra flat ones. If you are looking for wafers for your next project, contact us today to learn more or to place an order.

What are ultra flat wafers?
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