"Turning buildings into micro-power plants (urban emergency power systems) is one of the trends of the industrial revolution." On July 6, the "2023 China Cement Energy Conservation and New Energy Development Conference" hosted by China Cement Network was held in Chongqing, a mountain city, said Pan Jingong, general manager and doctor of Chengdu China Building Materials Photoelectric Materials Co., Ltd. Pan Jingong, general manager and doctor of
Chengdu China Building Materials Photoelectric Materials Co., Ltd., gave a speech on the theme of "Cadmium Telluride Power Generation Glass, a new low-carbon aesthetic material under the double-carbon strategy". He introduced in detail the relevant characteristics and advantages of cadmium telluride power generation glass. Cadmium telluride power generation glass has a strong ability to absorb light (absorb 94% of visible light), which can solve the light pollution of glass curtain walls. It has a low cost (the material is 2 microns thick), direct band gap semiconductor cadmium telluride; curtain walls are profitable (create economic value), indirect band gap semiconductor crystalline silicon.
Pan Jingong said that the research and development of cadmium telluride power generation glass has solved four major problems in the domestic industrial field. The first is the purification of elemental materials: the physical and chemical properties of tellurium and key impurities such as arsenic and selenium, such as deposition potential and saturated vapor pressure, are close, and it is extremely difficult to remove and separate impurities from raw materials containing tellurium and high-purity tellurium. The second is the preparation of semiconductor alloy: cadmium telluride alloy has high vapor pressure in the preparation process, the product segregation is serious, and it is very easy to explode. The third is the development of coating process: it is difficult to control the temperature field when coating on a large area of substrate glass, and the substrate deformation caused by gravity and high temperature coupling can not achieve uniform coating. The fourth is the design of complete equipment: in the process of dynamic continuous coating, there are defects inside the film and between the interfaces of different films, which makes it difficult to achieve stable mass production.
Pan Jingong believes that turning buildings into micro-power plants (urban emergency power supply systems) is one of the trends of the industrial revolution. The development of BIPV will help achieve carbon peak and carbon neutralization, and the potential market size will reach 1.7-3.6 trillion yuan.
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