What are doped silicon wafers and how do they make devices more powerful and efficient?

Silicon wafer is made from pure silicon to maximize its conductivity. Silicon wafers are thin slices of highly pure crystalline silicon (c-Si) which is used for the production of integrated circuits (ICs) which are made of several electronic components. Silicon wafers act as substrates for microelectronic devices to build electronic circuits.

Although silicon crystals may look like metallic but they are not entirely metals. A pure silicon crystal is as good as an insulator, allowing very little electricity to pass through it. However, by adding some impurity to silicon crystal through a process called doping, its electrical properties can be changed and silicon crystal turns into a semiconductor. These impurities are called as dopants. Common dopants used in silicon wafers to enhance their electrical properties include nitrogen, aluminum, indium, and boron. When light or moderate amount of doping is done, the semiconductor is called extrinsic but when a high level of doping is carried out, it is considered as degenerate, which makes it function as a conductor.

When boron is added, a P-type doped silicon wafer, which is positively charged, is produced that has many positively-charged holes. For producing N-type doped silicon wafer, which is negatively charged, other dopants like phosphorous, arsenic, or antimony are added. Doped silicon wafers are used in a variety of gadgets and serve as building blocks of a wide range of electronic devices, diodes, transistors, RAM chips, and more. Electronic circuitry used in mobile phones and home appliances uses doped silicon wafers. Solar cells need doped silicon wafers to increase efficiency and collect more sunlight. These are also frequently utilized in the aerospace industry for shielding and insulating delicate tools from extreme temperatures. Doped silicon wafers are used to make devices more efficient and powerful.

Doped silicon is used to make irregularly shaped wafers. For creating doped silicon wafers, the technicians at WaferPro, the world’s leading provider of doped silicon wafers, use wafers coated with a thin layer of aluminum oxide on top and an oxide under it. A small amount of silicon is placed in an oxygen-rich environment and then heated for about 5 minutes at 900 degrees Celsius. This silicon manufacturing process used by the WaferPro produces defects in the silicon that can serve as a heating source. Doped silicon wafers are peculiar as they have one or more dopant atoms, such as hydrogen atoms or boron atoms added to the aluminum oxide layer on top of the silicon substrate to increase its electrical conductivity.

Get the best quality Type I, Type II, and Type III doped silicon wafers

A doped silicon wafer implanted with silicon dioxide wafers is used as a light detector and photovoltaic cell. Doped silicon wafers can be classified by the elements used to modify the conductivity of the material. A Type 1 doped silicon wafer uses boron and a Type II doped silicon wafer uses hydrogen as the dopant. Wafers with a doping profile falling between Type I and Type Ii are known as Typed III doped silicon wafers. In general, the characteristics of Type III doped silicon wafers are intermediate between Type 1 and Type II. You can get the best quality doped silicon wafers at an affordable price from the WaferPro for use in your various applications.