What is Doped Silicon Wafer?

A Doped Silicon Wafer is a type of silicon wafer that has an extra element added to it. The silicon wafer can be doped with P-type or N-type silicon to either create positive or negative charges. The doping is done during the formation process and one of many impurities that can be added are boron, phosphorus, arsenic, and antimony. The main purpose of a doped silicon wafer is to promote energy flow by removing some of the resistance and passing current more easily through it than non-doped material. Doped silicon is typically used in electronics and solar cells to help control the flow of electricity.

What Makes Doped Silicon Wafers Unique?

Doped Silicon is the material used to make irregularly shaped wafers. To create these wafers, a silicon wafer is coated with a thin layer of aluminum oxide on top and an oxide under it. If a small amount of silicon is placed in an oxygen-rich environment and then heated for about 5 minutes at 900 °C. This silicon manufacturing process produces defects in the silicon that can serve as heating sources. Doped Silicon Wafers are peculiar because they have one or more “dopant atoms”. More specifically, they have either hydrogen atoms or boron atoms added to the aluminum oxide layer on top of the silicon substrate to increase its properties. These materials are semiconductors, and when electricity is directed through them, they either act as an insulator or a conductor.


float zone wafer
float zone wafer

Doped silicon Wafers made from these materials are used in many different applications, not just for solar cells.

For example,doped semiconductors implanted with silicon dioxide wafers are used as light detectors and photovoltaic solar cells. These doped silicon wafers can be classified by the elements used to modify the conductivity of the material. A type I wafer uses boron and a type II wafer uses hydrogen. Wafers that have a doping profile that falls between the Type I and Type II classifications are defined as Type III. In general, the characteristics of type III wafers are intermediate between those of Type I and Type II. These materials are used for a variety of applications in the semiconductor industry.

Why Do We Use Doped Semiconductor?

Efficiency And Power

Doped semiconductors are used in today’s electronics to make the devices more efficient and powerful than those made of undoped semiconductors. There are many different types of dopants that can be placed into silicon wafers, but during the manufacturing process, it is best if the dopant is dispersed uniformly throughout. Doping can be done by placing boron into the wafer or fluoride, arsenic, phosphorus, and antimony. This can also be done with nitrogen and arsenic.

Reduce Free Electrons

In some cases, doped silicon wafers are used to reduce the number of free electrons in the wafer, making silicon semiconductors more like metallic conductors.

Making Devices

Doped semiconductors are used in the construction of transistors, diodes, and integrated circuits. Doped semiconductors can improve a variety of electronic characteristics within devices such as transistors that make up circuits in computers or other electronic devices.


At WaferPro, you will find all types of wafers. This type of silicon wafer is unique and cost-friendly. We have the doped silicon wafer for you to modify the conductivity process. Contact us today to learn more and to place an order.