Film formation methods for thin-film silicon solar cells using laser technology and plasma CVD technology.
S10915
★Completely abandoning the conventional methods for creating transparent conductive films and solar cell layers, this is a method of applying raw materials to a glass substrate and heating and sintering them with a laser!
Speaker Part 1: Takahisa Mineno, Specially Appointed Professor, Graduate School of Science, Osaka University, Doctor of Science, Laser Energy Research Center Part 2: Hiroshi Takatsuka, Chief Engineer, Solar Cell Division, Mitsubishi Heavy Industries, Ltd. Target Audience: Engineers, researchers, and educators interested in Si film deposition for solar cells. Venue: Moriguchi City Civic Hall (Satsuki Hall Moriguchi) B1F Room 1 [Osaka, Moriguchi] Approximately a 5-minute walk north from Keihan Moriguchi Station, or about a 1-minute walk west from Exit 4 of Tanimachi Line Moriguchi Station. Date and Time: September 28, 2011 (Wednesday) 13:30-16:15 Capacity: 30 people. *Registration will close once full. Please apply early. Participation Fee: [Early Bird Discount Price] 46,200 yen (tax included, including text costs) for up to 2 participants from one company. *Limited to Tech-Zone members who apply by September 14. Membership registration is free. *After September 14, the [Regular Price] will be 49,350 yen (tax included, including text costs) for up to 2 participants from one company. ◆ If 3 participants from the same organization apply, the fee will be 69,300 yen.
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basic information
**[1 Lecture Abstract]** Attention is being drawn to solar cells as a renewable energy source; however, in large-scale systems (mega-solar), it takes 50 years to recover costs, making it economically unviable, which is a barrier to widespread adoption. To overcome this barrier, we believe it is necessary to completely discard the conventional methods of creating transparent conductive films and solar cell layers, and we are exploring a method of applying raw materials to a glass substrate and heating and sintering them with lasers. Our goal is to reduce the cost of solar cells to one-tenth. In this lecture, we will report on the new sintering method for transparent conductive films and the creation of amorphous silicon through the hydrogen reduction of SiO2. **[2 Lecture Abstract]** Thin-film silicon solar cells use raw materials that are abundant on Earth and can produce thin-film solar cells from gaseous raw materials using only about one-hundredth of the amount of expensive crystalline silicon. Moreover, compared to currently prevalent crystalline solar cells, they can generate over 10% more electricity annually, making them environmentally friendly and economically viable solar cells. Our company has developed the core plasma CVD technology for manufacturing thin-film silicon solar cells and has been a pioneer in quickly bringing large-area cells to market. We will also introduce practical examples of this technology.
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Applications/Examples of results
Part 1: Exploration of Si Film Formation Method for Solar Cells Using Lasers ~Comparison of Conventional Technology and New Transparent Conductive Film Formation Method, Laser Silicon Reduction Method, Silicon Refining Method~ [13:30-14:45] [Program] 1. Introduction (Current Status and Challenges of Solar Cells) 2. Challenges of Current Solar Cell Manufacturing Methods 2-1. Transparent Conductive Film as a Cost Limiting Factor 2-2. Abnormally Low Material Utilization Efficiency of CVD Equipment 3. Exploration of New Transparent Conductive Film Formation Methods 3-1. Transparent Conductive Films by Conventional Methods 3-2. Laser Sintering Method and Its Application to Transparent Conductive Films 4. Laser Silicon Reduction Method 5. Utilization of Solar Cells (Applications in Desert Areas) 6. Prospects for New Silicon Refining Methods Part 2: Application and Challenges of Laser Technology in Thin-Film Si Solar Cells ~Large Area VHF Plasma CVD Technology, Laser Scribing Technology, Trends in Next-Generation Solar Cells~ [15:00-16:15] [Program] 1. Mitsubishi Heavy Industries' Solar Cell Business 2. Large Area VHF Plasma CVD Technology 3. Thin-Film Microcrystalline Silicon Tandem Solar Cells 4. Laser Technology for Thin-Film Silicon Solar Cells 5. Development of Ultra-Large Plasma CVD Equipment 6. Development of Next-Generation Solar Cells
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