Recently, the Ministry of Science and Technology issued the Guidelines for the Declaration of Key Projects of Renewable Energy Technology in 2023 and the Notice of the Guidelines for the Declaration of Seven Key Projects of National Key Research and Development Plan, such as Hydrogen Energy Technology, in order to implement the relevant arrangements for the deployment of national scientific and technological innovation during the 14th Five-Year Plan period. The national key research and development plan has launched the implementation of the "renewable energy technology" key project, focusing on the four technical directions of solar photovoltaic, wind energy, biomass fuel, cross and basic frontier, and plans to launch 21 guideline tasks, including 5 photovoltaic research projects and 8 wind power research projects. In addition, there are seven key projects in 2023, including "hydrogen energy technology", "clean and efficient utilization of coal technology", "energy storage and smart grid technology", "renewable energy technology", "new energy vehicles", "transportation equipment and intelligent transportation technology" and "transportation infrastructure".
The photovoltaic research projects are as follows:
1. Research and development of mass production preparation technology and key equipment of perovskite/crystalline silicon two-terminal tandem solar cells (common key technologies)
Research content: In view of the bottleneck problem of improving the efficiency of crystalline silicon solar cells, To carry out research on large-scale preparation technology and key equipment of perovskite/crystalline silicon tandem batteries with higher efficiency. Specifically, it includes: device structure optimization design and preparation technology of high-efficiency perovskite/crystalline silicon two-terminal tandem cell; preparation technology and core equipment of large-area uniform, repeatable and large-scale production of functional thin film and active layer; packaging technology and equipment of tandem cell module; complete pilot technology and core equipment research and development of large-area thin film/crystalline silicon tandem cell.
2. Key technologies and system demonstration of large-scale photovoltaic high-efficiency medium-voltage DC power generation (application demonstration)
Research content: In order to support the construction of large-scale photovoltaic power generation base, key technologies and integrated demonstration of large-scale photovoltaic high-efficiency medium-voltage DC power generation will be carried out. Specifically, it includes the research on the stability, design method and operation control method of large-scale photovoltaic unit modular medium-voltage DC power generation system, high-power and high-efficiency photovoltaic medium-voltage DC converter technology and its electricity-magnetic-thermal integration technology, multi-port photovoltaic medium-voltage DC power generation system control and fault protection technology, and multi-port photovoltaic medium-voltage DC power generation system; Technology for performance monitoring, energy efficiency evaluation and comprehensive improvement of system energy efficiency of large-scale photovoltaic medium-voltage DC power generation system; experimental demonstration of integration and control technology of large-scale photovoltaic medium-voltage DC power generation system.
3. Research and development of complete set of technologies and key equipment for high-efficiency solar cells based on thin crystalline silicon wafers (common key technologies)
: to carry out technical research on batch preparation of high-efficiency solar cells based on thin crystalline silicon wafers, including: thin crystalline silicon wafer slicing technology; Research on the influence of PN junction and back surface field preparation technology on the mechanical properties of thin silicon wafers; stress and warpage control technology of thin crystalline silicon wafers related to solar cell technology; design and implementation of new light trapping structures and surface low-carrier composite structures based on thin crystalline silicon materials; metallization technology for thin crystalline silicon solar cells; On-line characterization and testing technology and equipment for optical and electrical properties in the manufacturing process of thin crystalline silicon solar cells, and preparation technology for high-performance thin crystalline silicon solar cell modules.
4. Research and development of key technologies and core equipment for mass production of cadmium telluride thin film solar cells (common key technologies)
Research contents: preparation technology of wide band gap window layer with adjustable electronic properties; online interface passivation technology for high-efficiency cadmium telluride solar cells; preparation method and online doping technology of graded band gap absorption layer; Design and preparation of back passivation layer with low recombination and high electronic reflectivity; new structure of high efficiency cadmium telluride battery and its preparation technology; research on attenuation mechanism of cadmium telluride battery; development of core equipment for production line of cadmium telluride photovoltaic modules, including cadmium telluride thin film deposition equipment, new high-speed laser cutting equipment and process, activation aging equipment and activation process of cadmium telluride modules, etc.
5. Basic research on solar high-power flexible concentrating technology and application (basic research)
Research content: to meet the needs of green and low-carbon transformation of building materials industry, carry out research on solar concentrating high-temperature heating technology and research and development of key technologies for replacing fossil fuels combined with building materials industry. Specifically, it includes the integrated design and operation technology for the high temperature industrial utilization of solar radiation to the ceramic building materials industry, the innovative optical design of the multi-reflective (twice or more) solar concentration process, the multi-scale and adaptive high-precision surface shape adjustment technology of the reflector, and the research on the service environment of the high concentration ratio concentrator based on the multi-field coupling optimization of material-fluid structure-optics. Develop a solar kiln suitable for the preparation of ceramics and cement, including preheating, decomposition, firing and cooling, to realize the whole production process of solar building materials; develop demonstration equipment for the production of solar building materials based on high-power flexible concentration. In terms of
application, the application process of national key R & D plan projects is divided into two links: pre-application and formal application. The acceptance time for project applicants to fill in the pre-application online is from 8:00 on June 28, 2023 to 16:00 on July 28, 2023. The declaring unit shall fill in the formal declaration according to the requirements and submit it it through the national science and technology management system, and the specific time and relevant requirements shall be notified separately.
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