Abstract: As a strategic emerging industry, the development of the photovoltaic industry can not be separated from the promotion of relevant supporting policies, especially if the overseas market is drastically shrinking. If we want to open the domestic market that is not fully started, the role of the policy is even more inconceivable. lack.
The main task of the solar photovoltaic industry in the “Twelfth Five-Year Plan†(a) to promote technological progress, transformation and upgrading to develop clean, safe, low-energy, high-purity, large-scale polysilicon production technology, improve comprehensive utilization of by-products, narrowing and international advanced The gap in production levels. To realize the innovative development of solar cell production technology, encourage large-scale production, and increase the core competitiveness of the photovoltaic industry. Promote industry energy conservation and emission reduction. Pay close attention to the development of clean and environmentally friendly new photovoltaic cells and materials technologies, and strengthen technological development.
(II) Raising the level of R&D and application of domestic equipment and integrated technologies to improve product quality, photoelectric conversion efficiency, and lower production energy consumption, and to support key production equipment for polysilicon, silicon ingots/silicon wafers, cells and modules, and thin-film batteries. As well as R&D and industrialization of power generation application equipment, the application of localized equipment is strengthened. Promote equipment companies and photovoltaic product companies to strengthen technical cooperation and exchanges.
(III) Improving the performance of solar cells and continuously reducing product costs The research and industrialization of crystalline silicon solar cells with low cost, high conversion efficiency and long life are strongly supported, and the cost of battery products and the final cost of power generation are reduced, and efforts are made to achieve parity online as soon as possible. To promote the technological advancement and industrialization of silicon-based thin films, copper indium gallium tin oxide thin films, and other batteries, and to increase the efficiency of thin-film battery transfer rates.
(IV) Promoting the application of photovoltaic products, expanding the photovoltaic power generation market, actively promoting the formulation and implementation of the on-grid tariff policy, and strengthening the R&D and application of photovoltaic products in industries such as agriculture, transportation, and construction, and supporting the establishment of a group of distributed photovoltaic power plants, Network application systems, BIPV systems, small photovoltaic systems, and photovoltaic-based multi-energy complementary systems, encourage the construction and application of large-scale photovoltaic grid-connected power stations, and promote the improvement of technical systems and management systems adapted to the characteristics of photovoltaic power generation. .
(5) Improve the construction of photovoltaic industry supporting service system Establish and improve supporting service systems such as standards, patents, testing, certification, etc., strengthen the management and service of the photovoltaic industry, and support industry self-regulatory cooperation. Actively participate in the formulation of international standards, establish and improve the photovoltaic country/industry standard system in line with China's national conditions, including polysilicon materials, battery/component product standards, photovoltaic production equipment standards, and photovoltaic system acceptance standards. Speed ​​up the construction of domestic public service platforms such as certification and testing.
Solar photovoltaic industry "Twelfth Five-Year" development priorities (a) high-purity polysilicon support low-energy, low-cost solar grade polysilicon production technology. On the basis of the existing, through further research, system improvement and improvement, support for the development of stable electronic-grade polysilicon production technology, and the establishment of 1,000 tons of electronic grade polysilicon production line. It has broken through high-efficiency and energy-saving large-scale purification, high-efficiency hydrogen recovery and purification, high-efficiency chemical vapor deposition, and comprehensive utilization of polysilicon by-products and other devices and process technologies to build a 10,000-ton high-purity polysilicon production line with an overall energy consumption of less than 120 degrees/kg.
(2) Silicon germanium/silicon wafers support high-efficiency, low-cost, large-size ingot casting technology, and focus on the development of quasi-single crystal ingot technology. Breakthrough new key technologies below 150-160 microns, such as corundum and steel wire cutting technology, to improve the quality of silicon wafers and the rate of silicon per unit of material, and reduce the loss of silicon materials.
(3) Crystal silicon cells will vigorously develop R&D and industrialization of high conversion rate, long-life crystalline silicon cell technology. The focus is on the research and application of low reflectivity suede preparation technology, selective emitter technology and subsequent electrode alignment technology, plasma passivation technology, low temperature electrode technology, and full back junction technology. Focus on thin film silicon / crystalline silicon heterojunction and other new types of solar cell key technologies.
(D) Thin-film batteries focus on the development of a combination of amorphous and microcrystalline stacked and multi-junction thin film batteries. To reduce the photo-induced attenuation of thin-film batteries, companies are encouraged to develop large-area high-efficiency silicon thin-film batteries of 5.5 generations or more, and to develop flexible roll-to-roll production processes for flexible silicon-based thin-film solar cells. Follow-up on the industrialization of copper-indium-gallium-selenium-selenium and organic thin film batteries, develop and master low-cost non-vacuum copper indium gallium tin thin film battery preparation technology, magnetron sputtering cell preparation technology, vacuum co-steaming method battery preparation technology, and scale Manufacturing key processes.
(5) High-efficiency concentrating solar cells focus on the development of industrial production technology for high-power-concentrating compound solar cells with a concentration multiple of 500 times. The efficiency of the battery produced by the industrialization under non-condensing conditions exceeds 35%, and the efficiency under concentrated light conditions Above 40%, substrate lift-off high-power photovoltaic cells have conversion efficiencies in excess of 25% under non-condensing conditions. Breakthrough high-concentration solar cell substrate glass technology, high-efficiency high-power compound solar cell technology, high rate condenser battery test analysis and stability control technology, and timely development of Fresnel and parabolic mirrors and other ancillary equipment.
(6) BIPV components focus on the development of BIPV module production technologies, including building materials that can be directly combined with buildings, double-glass BIPV modules and insulating glass modules that can be used in roofs, agricultural greenhouses, and curtain walls to solve the light transmission of BIPV modules. Insulation and other issues, the design of a beautiful, practical, BIPV components can be used directly as building materials and components. Expand the application of BAPV modules for building attachment.
(7) Photovoltaic production special equipment supports polysilicon production equipment such as reduction and hydrogenation, large size, low energy consumption, fully automatic single crystal furnace, tons of polycrystalline silicon ingot furnace, large-size, ultra-thin wafer multi-wire cutting machine, automatic silicon wafer Sorting machines and other key production equipment. Support multi-slotted velvet cleaning equipment, automatic flat plate plasma enhanced chemical vapor deposition (PECVD), laser etch, dry etch, ion implanter, full-automatic printing press, rapid sintering furnace and other crystalline silicon solar energy Cell production line equipment and thin film solar cell production equipment such as PECVD. To promote the integration of low energy consumption, high efficiency, automation and production processes for photovoltaic production equipment.
(8) Auxiliary materials In terms of key ancillary materials, high-purity graphite, high-purity quartz sand, carbon-carbon composite materials, glass, ethylene-vinyl acetate copolymer (EVA) adhesive, backplane, electronic slurry, and wire cutting Liquid and other domestic production.
(9) Grid-connected and energy-storage system mastered the integration technology of solar photovoltaic power generation systems, design integration and engineering technology of million-kilowatt photovoltaic power generation bases, development of high-power photovoltaic grid-connected inverters, energy storage cells and systems, and photovoltaic automatic tracking devices , data acquisition and monitoring systems, wind and solar complementary systems.
(10) Construction of public service platforms Support competent enterprises and institutions to build public service platforms for national photovoltaic application system inspection and certification, including inspections of polysilicon, solar cells and modules, thin-film batteries, and acceptance of photovoltaic system engineering. Support relevant service platforms to conduct studies on common issues in the industry, formulate and promote industry standards, and develop key common technologies.
The main task of the solar photovoltaic industry in the “Twelfth Five-Year Plan†(a) to promote technological progress, transformation and upgrading to develop clean, safe, low-energy, high-purity, large-scale polysilicon production technology, improve comprehensive utilization of by-products, narrowing and international advanced The gap in production levels. To realize the innovative development of solar cell production technology, encourage large-scale production, and increase the core competitiveness of the photovoltaic industry. Promote industry energy conservation and emission reduction. Pay close attention to the development of clean and environmentally friendly new photovoltaic cells and materials technologies, and strengthen technological development.
(II) Raising the level of R&D and application of domestic equipment and integrated technologies to improve product quality, photoelectric conversion efficiency, and lower production energy consumption, and to support key production equipment for polysilicon, silicon ingots/silicon wafers, cells and modules, and thin-film batteries. As well as R&D and industrialization of power generation application equipment, the application of localized equipment is strengthened. Promote equipment companies and photovoltaic product companies to strengthen technical cooperation and exchanges.
(III) Improving the performance of solar cells and continuously reducing product costs The research and industrialization of crystalline silicon solar cells with low cost, high conversion efficiency and long life are strongly supported, and the cost of battery products and the final cost of power generation are reduced, and efforts are made to achieve parity online as soon as possible. To promote the technological advancement and industrialization of silicon-based thin films, copper indium gallium tin oxide thin films, and other batteries, and to increase the efficiency of thin-film battery transfer rates.
(IV) Promoting the application of photovoltaic products, expanding the photovoltaic power generation market, actively promoting the formulation and implementation of the on-grid tariff policy, and strengthening the R&D and application of photovoltaic products in industries such as agriculture, transportation, and construction, and supporting the establishment of a group of distributed photovoltaic power plants, Network application systems, BIPV systems, small photovoltaic systems, and photovoltaic-based multi-energy complementary systems, encourage the construction and application of large-scale photovoltaic grid-connected power stations, and promote the improvement of technical systems and management systems adapted to the characteristics of photovoltaic power generation. .
(5) Improve the construction of photovoltaic industry supporting service system Establish and improve supporting service systems such as standards, patents, testing, certification, etc., strengthen the management and service of the photovoltaic industry, and support industry self-regulatory cooperation. Actively participate in the formulation of international standards, establish and improve the photovoltaic country/industry standard system in line with China's national conditions, including polysilicon materials, battery/component product standards, photovoltaic production equipment standards, and photovoltaic system acceptance standards. Speed ​​up the construction of domestic public service platforms such as certification and testing.
Solar photovoltaic industry "Twelfth Five-Year" development priorities (a) high-purity polysilicon support low-energy, low-cost solar grade polysilicon production technology. On the basis of the existing, through further research, system improvement and improvement, support for the development of stable electronic-grade polysilicon production technology, and the establishment of 1,000 tons of electronic grade polysilicon production line. It has broken through high-efficiency and energy-saving large-scale purification, high-efficiency hydrogen recovery and purification, high-efficiency chemical vapor deposition, and comprehensive utilization of polysilicon by-products and other devices and process technologies to build a 10,000-ton high-purity polysilicon production line with an overall energy consumption of less than 120 degrees/kg.
(2) Silicon germanium/silicon wafers support high-efficiency, low-cost, large-size ingot casting technology, and focus on the development of quasi-single crystal ingot technology. Breakthrough new key technologies below 150-160 microns, such as corundum and steel wire cutting technology, to improve the quality of silicon wafers and the rate of silicon per unit of material, and reduce the loss of silicon materials.
(3) Crystal silicon cells will vigorously develop R&D and industrialization of high conversion rate, long-life crystalline silicon cell technology. The focus is on the research and application of low reflectivity suede preparation technology, selective emitter technology and subsequent electrode alignment technology, plasma passivation technology, low temperature electrode technology, and full back junction technology. Focus on thin film silicon / crystalline silicon heterojunction and other new types of solar cell key technologies.
(D) Thin-film batteries focus on the development of a combination of amorphous and microcrystalline stacked and multi-junction thin film batteries. To reduce the photo-induced attenuation of thin-film batteries, companies are encouraged to develop large-area high-efficiency silicon thin-film batteries of 5.5 generations or more, and to develop flexible roll-to-roll production processes for flexible silicon-based thin-film solar cells. Follow-up on the industrialization of copper-indium-gallium-selenium-selenium and organic thin film batteries, develop and master low-cost non-vacuum copper indium gallium tin thin film battery preparation technology, magnetron sputtering cell preparation technology, vacuum co-steaming method battery preparation technology, and scale Manufacturing key processes.
(5) High-efficiency concentrating solar cells focus on the development of industrial production technology for high-power-concentrating compound solar cells with a concentration multiple of 500 times. The efficiency of the battery produced by the industrialization under non-condensing conditions exceeds 35%, and the efficiency under concentrated light conditions Above 40%, substrate lift-off high-power photovoltaic cells have conversion efficiencies in excess of 25% under non-condensing conditions. Breakthrough high-concentration solar cell substrate glass technology, high-efficiency high-power compound solar cell technology, high rate condenser battery test analysis and stability control technology, and timely development of Fresnel and parabolic mirrors and other ancillary equipment.
(6) BIPV components focus on the development of BIPV module production technologies, including building materials that can be directly combined with buildings, double-glass BIPV modules and insulating glass modules that can be used in roofs, agricultural greenhouses, and curtain walls to solve the light transmission of BIPV modules. Insulation and other issues, the design of a beautiful, practical, BIPV components can be used directly as building materials and components. Expand the application of BAPV modules for building attachment.
(7) Photovoltaic production special equipment supports polysilicon production equipment such as reduction and hydrogenation, large size, low energy consumption, fully automatic single crystal furnace, tons of polycrystalline silicon ingot furnace, large-size, ultra-thin wafer multi-wire cutting machine, automatic silicon wafer Sorting machines and other key production equipment. Support multi-slotted velvet cleaning equipment, automatic flat plate plasma enhanced chemical vapor deposition (PECVD), laser etch, dry etch, ion implanter, full-automatic printing press, rapid sintering furnace and other crystalline silicon solar energy Cell production line equipment and thin film solar cell production equipment such as PECVD. To promote the integration of low energy consumption, high efficiency, automation and production processes for photovoltaic production equipment.
(8) Auxiliary materials In terms of key ancillary materials, high-purity graphite, high-purity quartz sand, carbon-carbon composite materials, glass, ethylene-vinyl acetate copolymer (EVA) adhesive, backplane, electronic slurry, and wire cutting Liquid and other domestic production.
(9) Grid-connected and energy-storage system mastered the integration technology of solar photovoltaic power generation systems, design integration and engineering technology of million-kilowatt photovoltaic power generation bases, development of high-power photovoltaic grid-connected inverters, energy storage cells and systems, and photovoltaic automatic tracking devices , data acquisition and monitoring systems, wind and solar complementary systems.
(10) Construction of public service platforms Support competent enterprises and institutions to build public service platforms for national photovoltaic application system inspection and certification, including inspections of polysilicon, solar cells and modules, thin-film batteries, and acceptance of photovoltaic system engineering. Support relevant service platforms to conduct studies on common issues in the industry, formulate and promote industry standards, and develop key common technologies.
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