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Thin film technology (CIGS thin film technology)-the core of future energy strategy

2021年9月15日

薄膜技术(CIGS薄膜技术)--未来能源战略的核心

Judging from the current development direction of photovoltaic technology, thin film technology, especially CIGS thin films, will gradually become the mainstream of solar power generation. The key for thin film technology to outperform crystalline silicon products is that the absolute number of power generation is higher, and the average power generation is probably higher 8-10% (depending on the location and climate of the power station).

In addition, at high temperatures, the temperature coefficient of CIGS or CdTe is higher.In addition, the low-light power generation effect depends on the weather conditions. Generally, it can generate more power than crystal silicon in the morning and evening..5-1 hours.There is also a controllable attenuation rate of CIGS thin film power generation.It means that by adopting effective technical means, it is possible to control the occurrence of power generation attenuation..The example proves: We have been operating at the CIGS thin film power station in Shilin, Yunnan for nearly four years, and the power generation has not attenuated but increased slightly..

The crystalline silicon industry has matured and the conversion efficiency of monocrystalline silicon is high, but the above-mentioned technical shortcomings restrict the sustainable development of the crystalline silicon industry.In addition, the crystal silicon industry chain is long, cost control is difficult, and products lack competitiveness.

Thin film technology is suitable for desert high temperature environment. At present, Saudi Arabia, the Gulf country, is implementing an “energy substitution strategy” plan, that is, in the next 20 years, it will build 41GW photovoltaic power plants on the desert land of Saudi Arabia, which is equivalent to 41 nuclear power plants. A solar company (First Solar) cooperated to adopt cadmium telluride thin film technology.Only in this way can Saudi Arabia be conducive to conserving petroleum energy and achieving sustainable energy development..

At present, the entire solar power generation industry also tends to regard thin film technology as the most promising development technology..The European Union recently initiated the establishment of a CIGS “Sharc25 Project” in the scientific community, and 11 partners from eight European countries participated..Led by the German Solar and Hydrogen Research Institute (ZSW), known as the “European Eight Nations Alliance”, it integrates scientific research institutions, universities and industries with a scientific goal of achieving a CIGS conversion rate of 25% to counter the threats from the Asian crystalline silicon industry. Surpassing monopolysilicon.

Solar Frontier of Japan is the world’s largest CIS/CIGS technology producer, second only to First Solar in the United States, with a cumulative shipment of 3GW and an annual production capacity of 900MW-1GW. The current conversion rate is 13-14%. The future technology route Figure will reach mass production conversion rate of 20.9%.

So the future prospects are still in thin film technology, and even more in CIGS thin film technology.

The performance of the back contact layer will directly have an important impact on the battery performance.There are many kinds of back contact materials, including Pt, Cr, V, ZrN, Ag, Ni, Al, Cu, W and Mo.After experimentation and performance comparison, molybdenum target and tungsten target are the preferred materials for CIGS solar.Shaanxi Zhongbeitai target sputtering target specializes in the development and production of various targets.

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    Shaanxi Zhongbei Titanium Tantalum Niobium Metal Material Co., Ltd. is a Chinese enterprise specializing in the processing of non-ferrous metals, serving global customers with high quality products and perfect after-sales service.

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