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DOPED SILICON WAFERS  APPLICATIONS

Doped Silicon Wafers Application: All silicon wafers are useful, it is important to note there are different variations used for various purposes. The P-Type wafer is doped with boron and used for lithography. N-Type wafer have phosphorus and/or arsenic infused in them, and they are then used for advanced CMOS device fabrication. Wafers are measured for flatness and thickness to determine what it can be used for.

Screen-printing-enabled doping has recently been gaining popularity, especially in the manufacturing of wafer-based Si solar cells. The simple process of screen printing greatly facilitates the mass production of devices. Doping levels and doping regions can be very well controlled by selecting appropriate paste and templates during screen printing. There have been several screen-printed doping sources up to now. For example, Si ink was screen-printed to fabricate selective emitters for solar cells.

 Doped Silicon Wafers Application

Doped Silicon Wafers Application: N-TYPE Czochralski and multicrystalline silicon as materials for solar cells have received considerable attention recently due to emerging evidence that they are electrically superior to p-type materials. Several groups have reported that the very high pre- and post processing lifetimes in both cast multicrystalline and Czochralski materials. Scientists observed that a dramatic reduction in bulk lifetime of boron contaminated oxygen-rich n-type Czochralski silicon wafers that were “switched” to P-TYPE by annihilating oxygen-related thermal donors and pointed out some of the implications for solar cell performance. Researchers have predicted and noted the lifetime stability of phosphorous-doped Czochralski silicon wafers and solar cells made on them in contrast with their boron-doped counterparts. More recently, research groups are reporting good initial solar cell efficiencies on various designs based on various process techniques.

Scientists have demonstrated efficiencies over 20% on large-area n-type Czochralski and solar-grade float-zoned wafers using vastly different solar cell technologies. There certainly appears to be excellent potential for commercial-grade n-type silicon wafers as a basis for high-efficiency commercial solar cells.

An argument based purely on mobility has also been used to explain the predominance of p-type silicon wafers in the commercial marketplace. Electrons have a higher mobility compared to holes, by a factor of 3, and therefore, for the same value of minority carrier lifetime, they have a longer diffusion length. Electrons are the minority carrier in p-type material, and since minority carrier diffusion length is an important material parameter in determining the light-generated current of a silicon wafer, this leads to a preference toward p-type silicon wafers.

More importantly, the implicit assumption in the mobility argument that electron and hole lifetimes are equal is not valid when considering inexpensive commercial-grade silicon wafers and high-throughput industrial processes. These materials and processes can contain or introduce a wide variety of defects, including but not limited to chemical impurities, precipitates, complexes, grain boundaries, dislocations, and surfaces. Electron and hole lifetimes for such defects are rarely equal, and this has great implications for the choice of wafer polarity for silicon solar cells

Applications of Silicon Wafers

Doped Silicon Wafers Application: Silicon wafers are made up of a thin slice of silicon that can be altered to make it work in different ways for various types of electronics. Since silicon is considered to be a high-ranking type of semiconductor, it can serve multiple purposes in its wafer form. Wafers are created through the lab-grown crystal growing process, controlling various levels of purity depending upon the final result desired. It is then cut into very thin slices and polished before being used. Although other conductors are used in other more specific applications, silicon is the most popular semiconductor because of its high mobility at room temperature and high temperatures. Electrical currents can travel through silicon semiconductors much faster than most conductors making it an excellent option in electronic devices.

Silicon Wafers in Electronic Devices

Semiconductors like silicon wafers are used to manufacture the chips and microchips in electronic devices. The current electricity connects through silicon wafers, these semiconductors are used to build integrated circuits or ICs. Integrated circuits are used in a range of electronic devices as the commands for certain actions that the electronic devices perform.

Integrated Circuits

Silicon is a high-quality semiconductor, and its primary use in wafer form is to serve as a key player in integrated circuits. Integrated circuits are essential to power many of our electronic necessities like computers and cell phones. An integrated circuit can be installed not only around a silicon wafer, but also upon it or inside of it. Silicon wafers used for integrated circuiting and is usually manufactured at Nanoshel LLC.

Solar Cells

Silicon wafers are used to produce solar cells, also known as photoelectric cells. This final product is able to convert light energy into electricity. Types of artificial light are also able to be used in solar cells, which are then known instead as photovoltaic cells. Silicon acts as a semiconductor by absorbing the photons in sunlight that shine against the solar panel. This in turn creates electricity. However, wafers are quickly being replaced with silicon thin films, which are less bulky and more affordable to produce and use.

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