What Are Silicon Solar Cells?

Silicon solar cells refer to solar cells based on silicon. According to the crystalline form of silicon materials, it can be divided into single crystal silicon solar cells, polycrystalline silicon solar cells and amorphous silicon solar cells.

The earliest silicon solar cells emerged as a result of interest in using silicon for point-contact rectifiers. The rectifying properties of sharp metal contacts on various crystals were discovered as early as 1874. In the early days of radio technology, such crystal rectifiers were widely used as detectors in radio receiving equipment. However, with the development of thermionic tubes, such crystal rectifiers have been replaced by thermionic tubes in addition to being used in the UHF field. The most typical example of such a rectifier is the point contact of tungsten on the silicon surface. This technology promotes improvements in silicon purity and makes people want to learn more about the properties of silicon.

Although the history of silicon solar cells can be traced back to the emergence of silicon bipolar devices more than 50 years ago, the performance of laboratory cells and battery theory have only made great progress in the last decade. In the past few years, the performance of solar cells has reached a level that was once considered impossible to improve.

Compared with most other silicon electronic devices, silicon solar cells have special design and material requirements. In order to obtain high energy conversion efficiency, silicon solar cells not only need almost ideal silicon surface passivation, but also the bulk material characteristics must have uniform high quality. This is because some wavelengths of light must travel several hundred microns in silicon to be absorbed, and the carriers they generate must still be collected by the battery. ^[1]

The principle of solar cell power generation is mainly

Silicon solar cells are solar cells based on silicon. According to the thickness of the silicon wafer, it can be divided into crystalline silicon solar cells and thin film silicon solar cells. According to the crystalline form of the material, crystalline silicon solar cells have

The production of conventional solar cells includes crystal growth, slicing, polishing and other processes, which requires a lot of manpower and material resources. Especially in the slicing process, a lot of expensive silicon crystal materials are wasted. Purification with a silicon suspension belt can improve efficiency, reduce material waste, and save costs. The silicon suspension belt purification method is also called czochrals ki crystal growth method. The silicon crucible is used to melt silicon. One end of the rod is a good crystal with a certain purity. The melting zone is suspected to form a certain crystal arrangement, and the cured silicon is lifted out of the mold by a conveyor belt. This silicon crystal is thin in the center and thick on both sides, and has a good mechanical shape against crushing. ^[3]