PV Club: silicon solar technology is the dominant
Rising international oil prices to stimulate people’s nerves, in the conventional energy crisis today, as one of renewable solar energy with environmental protection for clean, inexhaustible features, quickly became the focus of attention, solar photovoltaic Industry also will heat up quickly. At the same time, as one of the polysilicon solar cell raw material prices are soaring, reaching a frenzied level, people see hope for the solar PV industry generated at the same time seems to be some doubts.
Promote development of large enterprises to join
Solar cell technology and investment industry because of its low threshold, high return on investment return period is short, has attracted many industrial giants join. Recently, not only BP and other energy giants involved, DuPont, Dow Chemical, Rohm and Haas and other chemical giants, and Bosch, Intel, IBM and Samsung and other leading semiconductor manufacturers are gearing up to join the field. Before that, as the world’s largest semiconductor equipment manufacturer Applied Materials, Inc. is also the field of thin film solar cell device into a lot of energy, trying to slice of this emerging market.
DuPont Electronic Technologies Division, Tim McCain, vice president and general manager, said: “Solar PV products in the market demand continues to grow, solar photovoltaic industry in the world have access to high-speed growth period.” The company expects the next few had Cuba V market annual growth rate of more than 30%, the company has been in product development and has invested heavily to increase production to meet market demand.
For many large company photovoltaic industry to join, the trade were welcomed, and that its their proven the Jishu and talents You Shi Hui promote Zhenggexingye are healthy Kuaisufazhan. China’s deputy chief engineer of ENFI Engineering Co., Ltd. Yantai Zhou told reporters, solar cell based on silicon as the substrate, the IC manufacturers to develop solar photovoltaic industry has a great advantage, they accumulate a lot of experience, including the production of ideas, technology base, clean environment, support systems, to enhance the solar cell technology will have a significant role in promoting. Traditional chemical material manufacturers have production experience and supporting chemical raw materials or auxiliary facilities and other advantages. Zevi said LDK is responsible for: “an integrated photovoltaic industry is very strong in the field, need to have the semiconductor, chemical, machinery, etc. Xiangguanzhishi of Rencai. Meanwhile, solar photovoltaic market is a Zengliang market, Dajiakeyi with Ba this’ cake ‘bigger. ”
However, these “newcomers” who in the industry have made some suggestions. China Electronics Materials Industry Association, Semiconductor Materials Branch of the Secretary-General Zhu Lihui that the current prices as the silicon material and solar cell prices down, the industry will be gradually squeezed profit margins. Yantai Zhou also proposed that an ultra-high pure polysilicon products, production processes with flammable, explosive, toxic, corrosive, etc., on the safe production and environmental protection needs extra attention. In addition, the complexity of the production of polysilicon, a long process, the international advanced technology has been from the United States, Japan, Germany and other countries blockade, control and monopolize the market to get into the polysilicon in the field need to have a good technical team and the sound of technical sources.
Zevi LDK official said after the entrants as the market will take some time to adjust to the market, and will face more intense competition. Of course, how to learn from each other to grow is the key to their own.
The dominant silicon solar technology
In the solar PV industry development, a variety of solar cell production technology, including crystalline silicon solar technology and thin film solar technology is the most talked-about both. Industry experts said that both have their advantages, do not appear totally replace the relationship. Stability of crystalline silicon solar cells, conversion efficiency, decay slowly, the high cost of a temporary problem. As the silicon in the crust is the most abundant elements oxygen removal than about the earth’s crust 1 / 4, so in the civilian area, crystalline silicon solar cells potential for development. “The advantages of thin film solar cells is silicon consumption was relatively low. As the price of polysilicon, thin film solar cell technology grew hot, but its power generation accounts for solar cells a small proportion of total generating capacity, combined with its relatively low conversion efficiency, fast decay Therefore, although the thin film solar cell R & D direction, but still can not account for a period of time applications dominance. “Zhu Lihui in the” China Electronics News “reporter interview. Yantai Zhou also said polycrystalline silicon solar cells will remain the mainstream, although in recent years, the price of the drive to make thin film polysilicon solar cells and other types of rapid development of solar cells, but transformation efficiency, raw material supply and other factors, the development of limited 2007 production accounted for only 8.75% of total production of solar cells.
However, the thin film solar cells will not go away, there is still useless. Zevi related LDK official said the company, thin film solar cell in some special applications, such as building-integrated engineering, glass curtain wall engineering field advantage. Rohm and Haas, President of China Hua Du also said that a large number of thin film solar cells are applied to market portable products. Applied Materials has launched the world’s first one is the only one in the 5.7 square meters of glass panels on the production of thin film solar cell production line integration, to achieve a breakthrough in this field. In short, these two technologies totally replace the relationship does not exist, but the two complement each other and jointly promote the development of solar photovoltaic industry.
There is also a concentrating solar energy technology that is installed on crystalline silicon solar cell concentrating devices to improve conversion efficiency. However, due to high cost of the device, are hard to rapid development.
No matter what technology is for, the application to improve efficiency and reduce costs is the same theme. Hua Du told reporters: “At present, the development of solar energy industry is the biggest challenge for solar energy conversion efficiency, mass production of solar energy conversion efficiency can reach 20% relative increase in the cost of solar energy applications. The future still need to overcome technical bottlenecks, improve the conversion efficiency of solar energy production . ”
At present, most countries, there is no reason why solar power grid, high cost is a major factor. DuPont Electronic & Communication Technology Services Platform Group Vice President of Miller, said: “photovoltaic system to achieve a reduction in construction Chengben to leave the market an important factor in sustained and rapid growth.” Erdui Yu polysilicon Jiage currently skyrocketing, the industry Renshiguandian also quite consistent: the rapid expansion of short-term needs of internal and industry, a serious shortage of materials, resulting in polysilicon prices soared. But in the long term, expansion of existing polysilicon suppliers, plants, industry and the continued expansion of polysilicon industry chain integration will make the price of their senses. Ping Huanpei told reporters, is expected to 2 to 3 years, polysilicon prices will drop 50% -60%.
Industry Calls for policies to expand domestic demand
Solar photovoltaic industry in China developed rapidly in recent years, the annual production of solar cells has surpassed the United States, Japan and Europe. However, our polycrystalline silicon photovoltaic industry and the industry’s current development situation is not optimistic about the emergence of the “two are in a foreign country,” the embarrassing situation. “90% of our polysilicon to high imports, while about 90% of the production of silicon solar cells are exported to foreign countries.” Zhu Lihui told reporters that “China will export low silicon to abroad, so much to lose. If go not to grasp the polysilicon industry, which imports the trend may continue for polysilicon 3 years to 5 years. “Zhu Lihui tone revealed a trace of frustration.
Zhu Lihui said that although China’s polysilicon production increases but also a substantial increase in consumption is expected to exist in 2010 and 40 000 -5 kt. Therefore, the development of China’s solar PV industry, how to further expand polysilicon production is an important issue. He believes that solution is to expand domestic demand for solar cells. Production of solar cells in China about 90% exported to foreign countries, a fact demonstrated a serious shortage of domestic demand. This is also subject to foreign solar cell industry in China. How to expand domestic demand? In his view, policy and legal support is essential. “Some developed countries introduced” Tariff Law, “and lists the specific measures to encourage the application of solar cells, and our laws in this area did not play a strong role in the support and encouragement. Although the state has adopted a” Chinese people Republic of the Renewable Energy Law “, but for solar cell applications, the lack of clear rules and supporting the implementation of feasible policies, in practice there are many difficulties in the process, have little effect.”
Zevi related to LDK’s head also said that strong government support towards the promotion of large-scale application of solar photovoltaic industry. Such as Germany, Spain, the Government’s support for very large, these countries are also rapidly developing solar PV industry, government support will be the trend. Beijing Express general manager of Ping Huanpei also said the state’s policy to support the promotion of solar photovoltaic industry entirely domestically, thereby reducing the cost and promote the rapid development of the entire industry.
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