Solar wafer production process analysis _ solar wafers are radiation toxic?

Silicon wafers are large pieces of silicon cut into wafer solar cells. Generally, silicon wafers are made into crystalline silicon solar cells, or there are other solar cells: thin film solar cells, amorphous silicon solar cells, and concentrated solar cells. and many more.

The solar wafer is used after the energy of solar energy is converted into kinetic energy. The applicable range is relatively wide, and the energy saving is relatively high, and it can be used with confidence.

Since the energy of the photons is irradiated to the position of the electron holes in the semiconductor PN junction formed by silicon and germanium, the electrons are shifted, thereby generating a voltage in the semiconductor silicon at both ends, and if the voltage forms a loop, a current is generated. Ribbon polycrystalline silicon: The polycrystalline ribbon is directly pulled out of the silicon liquid as a shame material for the battery, and then laser-cut into a square solar battery substrate. It does not cut mechanically and saves half of silicon.

According to the size requirement, the 矽 single wafer rod is cut into a 矽 single crystal quasi-square rod, and the square corners of the cut quasi-square rod are rounded by a roller mill.

The qualified quasi-single-crystal quasi-square rod is placed in the prepared acid solution to remove surface impurities and clean it for the next process.

The clean 矽 single crystal quasi-square bar is bonded to the workpiece plate.

The adhered 矽 single crystal quasi-square rod is mounted on the cutting station of the microtome, and is cut into pieces by setting the process parameters.

The cut ruthenium sheet is pre-cleaned to remove impurities such as cutting fluid adhering to the surface, and the pre-washed ruthenium sheet is degummed.

The stripped pieces are inserted into the cassette and placed in an ultrasonic cleaner for cleaning.

The ultrasonically cleaned cymbal box is inserted into the drying station of the dryer, and the surface is dried by centrifugation and heating.

The test of the bracts mainly includes appearance, thickness, electrical resistivity, TTV and warpage, and the tested bracts are classified and packaged according to grade and delivery type.

A silicon wafer is a chemical that is toxic and has strong radiation. At present, on the large silicon wafers, 156,000 transistors can be integrated. However, the finished silicon wafer is not poisonous. Only in soldering, the solder will contain lead and be toxic. However, the pollution of the radiation during the production process is also quite large.

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