New energy industry development: high purity monocrystalline silicon has a bright future, the photovoltaic industry ushered in the "high conversion rate moment"

· PV Industry News


Under the influence of the"double carbon" target, the photovoltaic industry will usher in a"high light" moment, and related industry sectors will also usher inrare development opportunities. Data show that photovoltaic materials, organicsilicon and polysilicon new production capacity is expected to be released inthe first half of 2022, metal silicon is expected to be very large incrementsin 2022, the preliminary estimate to 2025 polysilicon production capacity ofabout 2.27 million tons. 



It is understood that there are anumber of silicon materials for photovoltaics projects underway around theworld, which are planned to be completed in 2022. High purity silicon, anindispensable basic material for manufacturing photovoltaic panels, is locatedat the top of the silicon-based new materials industry chain, and severalengineering projects are under construction. 


High-purity monocrystalline silicon has a bright future

China's Qinghai Asia SiliconMaterials Co Ltd, a supplier of high-purity silicon materials, has a projectwith an annual production capacity of 40,000 tonnes of electronic-gradepolysilicon. With a registered capital of RMB 750 million, the project isscheduled to be completed and put into operation in June 2022. At present, thecompany has 19,000 tonnes/year of high-purity polysilicon and 9,000 tonnes/yearof fibre-optic grade SiCl4 production capacity and 185MW of grid-connectedphotovoltaic power plants. After the project is put into operation, it isexpected to achieve a total annual output value of approximately RMB 4 billion.   

There is also a great market demandfor high-purity crystalline silicon refined from high-purity silicon. China'sQinghai Lihao Semiconductor Materials Co., Ltd. plans to invest a total of RMB18 billion in three phases to build a 200,000 tonne per year high-puritycrystalline silicon production project. The first phase, with an investment ofRMB 4.5 billion, is scheduled to be completed by December 2022. 



Crystalline silicon material is themost dominant photovoltaic material, with a market share of over 90%. Atpresent, silicon photovoltaic cells account for more than 98% of the world'stotal photovoltaic cell production, of which polycrystalline silicon cellsaccount for about 55%, monocrystalline silicon cells account for about 36% andother silicon material cells account for about 70%.  

Along with N-type solar cellsgradually occupy the market, N-type solar cells of the main material N-typemonocrystalline silicon has become a new position in the photovoltaicmanufacturing industry, who can occupy first, who will be able to take the leadin the future of the photovoltaic industry. "Because the high or lowquality of monocrystalline silicon affects the conversion efficiency of N-typesolar cells."   

Industry experts say that silicon iswidely used due to its own qualities and advantages. Highly puremonocrystalline silicon is regarded as an important semiconductor material andis an important raw material for solar photovoltaic panels, integratedcircuits, sensors and so on.   

Polysilicon can be used directly inthe manufacture of solar photovoltaic panels or processed into monocrystallinesilicon and then used in the manufacture of photovoltaic panels. Polysiliconphotovoltaic cells are developing rapidly due to their lower manufacturing costand higher photoelectric conversion efficiency (close to 20%). 



Affected by national policies andthe rapid development of the photovoltaic industry, the market demand forpolysilicon is growing rapidly, and the market supply exceeds demand. 

Industryexperts said that in order to achieve the "double carbon" goal, the energystructure of clean, low-carbon transformation will be further increased. Andfrom a longer-term goal, 2030 will reach 25%, 2060, the proportion ofnon-fossil energy consumption more than 80% of the requirements, it can be saidthat in the next nearly 40 years, wind power, photovoltaic power generation andother non-fossil new energy development prospects.