Silanes: A Period of Rapid Development Driven by Emerging Industries
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I. Market Scale Continues to Expand, with a Growing Share of High-End Products
In 2024, China's functional silane production is projected to exceed 400,000 tons, an 8.5% year-on-year increase, reaching a market size of 5.15 billion yuan, an 18.6% year-on-year increase. This growth is primarily driven by strong demand from emerging industries such as photovoltaics, new energy vehicles, and semiconductors. Demand for photovoltaic silane crosslinkers and coupling agents for composites has grown significantly. Sulfur-containing silanes, benefiting from the expansion of the green tire market, saw production reach 109,300 tons, accounting for 27.2%. The increasing share of high-end products has become a core feature of the industry. The average price of electronic-grade silane has exceeded 35,000 yuan/ton, while photovoltaic-grade products have remained above 22,000 yuan/ton, driving an overall profit margin increase of 2-3 percentage points.
II. Accelerating Technological Iteration, with Green Manufacturing Becoming Mainstream
Technological breakthroughs in the industry are concentrated in high-purity preparation and environmentally friendly processes. The purity of electronic-grade silane has surpassed 7N, reaching internationally advanced levels, meeting the semiconductor industry's needs for the preparation of key materials such as single crystal films and silicon nitride thin films. In the production process, the chlorosilane disproportionation method has achieved 1,000-ton scale application, increasing material utilization to 98% through a closed-loop circulation system. The trichlorosilane disproportionation method produces silane with a purity of 9-11N, which can be pyrolyzed to produce high-purity polysilicon. Environmental protection policies are driving industrial upgrades, and low-VOC and biodegradable silane products have become a research and development focus. Companies such as Evonik have launched new silane crosslinkers that improve coating adhesion by 30% while reducing volatile organic compound emissions.
III. Deeply Expanding Application Scenarios and Exploding Demand in Emerging Fields
The application boundaries of silane continue to expand. In the semiconductor field, electronic-grade silane with a purity of 6N or higher is a core raw material for chemical vapor deposition (CVD), used to prepare key materials such as single-crystal silicon and silicon oxide thin films. Silane consumption in the domestic semiconductor industry is expected to increase by 25% year-on-year in 2024. Demand in the photovoltaic industry is experiencing a structural upgrade, with the replacement of N-type cell technology driving a 50% increase in silane usage. TOPCon cells consume 24 tons of silane per GW. In the new energy vehicle sector, the industrialization of silicon-based anode materials is accelerating. Demand for silane in the silicon-carbon anode sector is projected to reach 26,000 tons by 2025, a compound annual growth rate of 242.8%. Furthermore, breakthroughs have been made in the application and research of silane in emerging fields such as biomedical materials and high-energy materials, making it a fundamental raw material for many new technologies and materials.