[Zhongbo.com] "Power glass" is called "oil field hanging on the wall". The reason why it can generate electricity is because a layer of cadmium telluride is applied on the surface of the glass, which has the function of photoelectric conversion and becomes a power generation glass.

Cadmium telluride power generation glass is a photovoltaic device formed by sequentially depositing a plurality of semiconductor thin films on a glass substrate based on a heterojunction of p-type CdTe and n-type CdS. The smear material is very subtle, equivalent to one percent of the hair.

Cadmium telluride is one of the materials with theoretically high conversion efficiency. Has the following advantages:

(1) CdTe is a direct bandgap semiconductor with better performance;

(2) CdTe visible light absorption capacity is very strong, 1 micron CdTe can achieve more than 90% of visible light absorption;

(3) CdTe is a binary compound, and other compound forms other than Cd/Te = 1 have not been found.

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After years of hard work and research and development, Chinese scientist Pan Jingong independently developed power generation glass.

China National Building Material Group has been committed to the research and development and industrialization of cadmium-fired power glass for many years. It is the first to explore new methods for defect analysis, copper doping, back contact, dark current, etc. of cadmium telluride materials that have long plagued the cadmium telluride thin film solar cell industry. Key technical problems have been carried out for many years. Various innovative products such as light-transmitting power glass, black-and-white power glass, rainbow power glass, and star-powered glass have been developed and developed.

In April 2018, China National Building Material Group built the world's first 100 megawatt cadmium cadmium power generation glass demonstration production line with independent intellectual property industry 4.0 in Chengdu. It is also the world's first to prepare large-area cadmium telluride power generation glass. The production line was specially supported by the National Development and Reform Commission's 159 million yuan "Strengthening the core competitiveness of manufacturing industry" project. It has achieved a laboratory conversion efficiency of 18.05%, a small power glass conversion efficiency of 14.5%, an average power of 226W, a high component power of 254W, and a certified power of 252W. It has been assessed by the academician group as the leading domestic and international advanced level. Fully own independent intellectual property rights.

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Unlike common solar panels, the time it takes to produce the same piece of power glass is very short, unlike the solar panels, so the manufacturing costs are reduced. In addition, the power generation conversion efficiency of power generation glass is higher than that of solar panels, and it can absorb 95% of light. Such a material has low cost and high conversion efficiency, and it is bound to be widely used in the future. Cadmium telluride power glass has a very typical glass building material characteristics, and is a new intelligent new green power building material.

At present, China National Building Material Group is constructing five cadmium telluride power generation glass production lines in Jiangsu Taizhou and Hebei. It is planned to build 15 production lines nationwide within the next 2-5 years to form GW-class production capacity; within 3-10 years, export technology production lines on a global scale, forming 5GW of production capacity, surpassing the US first solar energy.

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