Crystalline Silicon Solar Cell Manufacturing Process
Author: Source: Datetime: 2016-09-28 16:16:15
Preparation of Silicon Materials
Silicon is the most widely distributed element in the crust, its content is 25.8%. But its main form is in the form of oxide, such as quartz sand. The preparation of silicon materials, mainly divided into: the preparation of high-purity polysilicon, growth of silicon, polycrystalline silicon ingots, silicon processing.
Preparation of High - purity Polycrystalline Silicon
As a high-purity polycrystalline silicon material for manufacturing solar power batteries, it is smelted into industrial silicon by carbon reduction. Industrial silicon and hydrogen or hydrogen chloride reaction, available silicon tetrachloride or trichlorosilane. After distillation and purification, and then reduced to silicon by reducing agent. In the reduction process, the deposition of tiny silicon particles to form a lot of nucle, and continue to grow, until the long rod-like polycrystalline.
Preparation of Single Crystal Ingot
Monocrystalline silicon ingot preparation there are two main methods: Czochralski method [CZ method] and the zone melting method (FZ method).If we could mprove solar cell conversion rate use for solar powered portable generator more effective for our services, more environmentally friendly.
Silicon wafer processing
Silicon wafer processing to go through the ingot cutting, spheronization, slicing, chamfering, grinding, chemical etching and polishing process, the final completion of the production of solar power batteries, the preparation of silicon wafers.
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