The prospect of vacuum coating machine and photovoltaic TCO coated glass

Vacuum coating machine photovoltaic TCO coated glass prospects, TCO (Transparentconductingoxide) glass, that is, transparent conductive oxide coated glass, is uniformly coated with a transparent conductive oxide film on the surface of flat glass by physical or chemical coating method, mainly including In , Sn, Zn and Cd oxides and their composite multiple oxide film materials.

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TCO glass was first used in flat panel displays, and now ITO type conductive glass is still the mainstream glass electrode product in the flat panel display industry. In recent years, the rise in the price of crystalline silicon has greatly promoted the development of thin-film solar cells. At present, thin-film solar cells account for more than 10% of the world’s photovoltaic market. As a necessary component of the front electrode of the battery, the market demand for photovoltaic TCO glass is growing rapidly. Become a hot high-tech coated glass product.

Vacuum coating machine ITO coated glass is a very mature product, which has the characteristics of high transmittance, strong film and good conductivity. It was initially used in the front electrode of photovoltaic cells. However, with the improvement of light absorption performance requirements, vacuum coating equipment TCO glass must have the ability to improve light scattering, which is difficult to achieve with ITO coating, and the laser etching performance is also poor. Indium is a rare element. It is stored in a small amount in nature and is expensive. ITO is not stable enough in plasma when used in solar cells, so ITO coating is no longer the mainstream electrode glass for photovoltaic cells.

When the photovoltaic industry has been developing at a rate of nearly 40% for five consecutive years, the supply of polysilicon, the upstream raw material for mainstream products, crystalline silicon solar cells, has seen an unprecedented shortage. The price of polysilicon has risen from US$24/kg in 2003 to the current spot price of more than US$300/kg. Compared with crystalline silicon solar cells, thin-film solar cells have the characteristics of strong low-light application and strong shape plasticity. The rise in the price of crystalline silicon has virtually promoted the development of thin-film solar cells. At present, thin-film solar cells have exceeded the global photovoltaic market share. 10%, along with the rising price of polysilicon, the development of thin-film solar cells is expected to accelerate further.

Zunhua Baorui Titanium Technology Co., Ltd. is a well-known vacuum coating manufacturer, specializing in the manufacture of various vacuum coating equipment, providing industry customers with customized process solutions and coating equipment.