Crystalline silicon photovoltaic cells project to the industrial chain pull analysis

Crystalline silicon photovoltaic cells project to the industrial chain pull analysis

Wuxi still have to perform at the deification of solar power to create wealth, the solar power industry to benefit from the long-term positive, in recent years, China's new enterprises on a large number of crystalline silicon cells project to enable the rapid breakthroughs in production capacity 3200 MW,have become the world's largest photovoltaic industry base. At the industrial chain of photovoltaic power generation on, the battery-chip technology is undoubtedly the most characteristics, the most development potential and the most central aspect leading role. The development of crystalline silicon cells, which would Driven polysilicon material, pull rod sections,components, power generation engineering, chemical engineering and photovoltaic applications, photovoltaic machinery dell latitude d820 battery and other related industries. This article describes what constitutes a photovoltaic industry chain aspect, for the photovoltaic industry with a view to the balanced development of the chain be helpful.

First, polysilicon materials

Polysilicon material prices in 2004 from the 24 U.S. dollars per kilogram to the current 480 U.S. dollars in just 4 years Price up 10 times, and prices have no city, in short supply, has become a bottleneck in the development of the industrial chain of factors. The reasons for this situation lies primarily refined polysilicon materials required greater capital investment (investment in new polysilicon plant to be 100 U.S. dollars / kg), more energy consumption (per 1 kilograms of polysilicon productionis expected necessary consumption 200 -500 degrees) and high technical threshold. At present,the production of high-purity polycrystalline silicon material production process more than 85% modified Siemens law. It is the use of chlorine and hydrogen synthesis of HCl, HCl and industrial silica fume at a certain temperature synthesis SiHCl3, then the separation of SiHCl3 distillation purification, purification SiHCl3 after hydrogen reduction at the furnace for chemical vapor deposition reaction of high purity polycrystalline silicon material. Such high-purity polysilicon materials require a higher purity, it generally takes to reach 99.9999% or more. At a seller's market and driven by high profits in recent years, China's Jiangxi Zevi, Luoyang Sino-silicon, silicon Xinguang Sichuan Emei and large-scale industry and other enterprises to enter the polysilicon material industry is expected to total investment of nearly 400 billion yuan, after completion It has an annual production capacity of 70,000 tons. As technology advances, battery-chip-per-watt silicon volume in 2005 from the 12g / W declining 5 percent annually, beginning in 2010 will reach 9. 3g / W, the industry's goal is to reduce the volume of silicon to 6g / W . Coupled with the rapid development of thin-film battery, it will further ease the supply of polysilicon silicon material situation.

Second, pull rod sections

Polysilicon material needs to be translated into one or more amorphous silicon ingot rod can only further processed into wafers, cells and modules. Monocrystalline silicon rod production fujitsu lifebook t4220 battery process is the most commonly used Czochralski method. In the process, the polysilicon material Add Medium quartz crucible, after slow warming after melting, immersion must have a crystal to the seed, after necking, put shoulder to shoulder, such as trails, ending the growth and cooling process, the completion of a single crystal growth process. Jingjing many ingot production process are the most commonly used method ingot. In the process, the polysilicon Add Medium quartz crucible, after heating, melting, long grain, annealing and cooling, the completion of more than one ingot growth process Jingjing. Jingjing put single crystal silicon rod or anchor cut into wafers, are now largely used in many wire-cutting technology. To silicon or silicon ingot rod by shaping the surface, orientation, cutting, grinding, corrosion, polishing, cleaning and other processes, processed into silicon wafers that meet specific requirements. The thickness of silicon wafers in 2004 from the mainstream of the development of the thickness of 270um to 200um mainly present. At present, the international production on some manufacturers can reach the silicon thickness 180um. After two years about the development of the utilization of silicon has increased more than 32 percent. Because of crystal pulling furnace and casting furnace crystal relatively cheap, and has basically achieved domestically, coupled with relatively low technical threshold, therefore, in recent years a large number of our new pull up bar slicing project. However, material constraints polysilicon bottleneck factor, and is often so that these silicon rods, silicon ingots and silicon enterprises into embarrassing situation.

Three crystal silicon cells

Pull rod slice next aspect is the production of solar cells, crystalline silicon solar cell fujitsu fpcbp155 battery is divided into cells and thin film coatings batteries two broad categories. Crystalline silicon cells accounted for 93% of market share, one of monocrystalline silicon cells the highest conversion efficiency, the domestic has reached 17.6%. Polysilicon breakthrough in the conversion rate by 16%. Manufacture of crystalline silicon solar cells need to go through a lot of processes, including wafer cleaning, surface milling system, the proliferation of colorectal system, go phosphorus silicon glass, plasma etching, plating antireflection coating and screen printing ,and so on. Because the European market, especially the German market demand, leading to domestic enterprises in recent years, large-scale investments in this field. Currently, China's manufacturing enterprises cells reached 60, the middle to break through 3200 MW, the total chip scale battery out first in the world. Up to now, China's photovoltaic industry has a total of Suntech, Trina Solar, Hebei JA, Tianwei Yingli, Nanjing CLP, Linyang, etc. can and Zhejiang ReneSola at 10 companies have listed overseas, IPO The total financing of more than 1.9 billion U.S. dollars, with a total market value of 17.865 billion U.S. dollars, the average earnings for every enterprise 49.47. With the traditional centralized power generation, electricity supply in different ways, the solar cell has a portable, discrete features, more easily, more suitable embedded consumer devices, which for solar cellswill provide a broad market space. Although the cells to more than 30% of the annual growth rate,and the current prices are also steadily become a hot spot for domestic and foreign investment, but the international team of problem, high investment and the supply of polysilicon materials, are invested by the people have to take into careful consideration.

POST COMMENT

What Triggers Migraines What to Look for When Searching for Split or Ducted Air Conditioning Installation Companies How To Trigger 3-4 Inch Gains - The Natural Penis Growth Plan That Really Works Canon 200dg Digital Camera Gadget Bag Black Air Conditioner Ordering Ideas Ex IT Worker Combats Credit Crunch with Electrical Courses A convenient assistant for men-Electric Razor 2 No-Fail Techniques To Make Any Woman Orgasm - These Will Trigger Earth-Shattering Pleasure! Methods of Generating Electricity At Home To Reduce Cost Kodak digital camera an easy way to preserve vivid memories Stick to Your Budget When Buying a Digital Camera Useful Tips To Find Good Industrial Scales Making Your Penis Longer - This Is How You Trigger Massive Gains To Your Penis Size (I Told You So)