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On September 25th, BASF's “Create a new role for chemistry†scientific and technological innovation exchange landed in Shanghai, bringing together BASF's cutting-edge technology display and its innovative achievements in the future of sustainable development, including improving energy efficiency and improving the quality of life, through more than 20 interactions. Booth introduction.
In all its innovations, we focus on three areas: resources, environment and climate, food and nutrition, and quality of life. In the energy sector, in the face of rapidly increasing energy demand, BASF focuses on wind, solar, and electric vehicles. Energy-saving solutions for organic light-emitting diodes (OLEDs), building insulation and concrete technology.
In the field of solar energy, BASF has introduced a new type of laser transfer technology (LTP) and customized silver/aluminum inks for photovoltaic cells . Its goal is not to improve the entire metallization process but to use lasers. Underneath, the silver electrode does not need to contact the wafer again, thereby reducing the fragmentation rate of the wafer, adopting a narrower metal structure, producing a thinner solar cell, and at the same time improving the silicon wafer production and production speed.
This technology, also known as the new contactless printing process, was developed by BASF in collaboration with anrentum innovation-stechnologien GmBH and equipment manufacturer Schmid GmbH. It is reported that this new type of printing press and CypoSolRL custom ink can replace the existing screen printing process. Compared with screen printing, the main advantage of LTP is that laser technology will not exert pressure on ultra-thin solar cell wafers. The center test shows that the contactless LTP process can reduce the fracture rate of solar cell wafers by up to 80%.
In terms of costs, investment in fixed assets can be relatively reduced (reduction of dryers, simple handling of tail gas), silicon materials can be saved, equipment takes longer, and screens need not be replaced. Potential manufacturing costs are reduced by about 0.60-1.00 cents/W. The product line includes CypoSolRL61-10 positive silver ink (aq)/lead-free) and CypoSolRL65-10 back-polar aluminum ink (lead-free).
In addition to the latest CypoSolRL series, BASF also offers improved pastes for traditional screen printing, such as CypoSolRS51-105 front-side silver paste (lead-free), CypoSolRS51-305 front-side silver paste, CypoSol RS59-102 backside silver paste (lead-free), etc. .
In addition, BASF is also developing organic solar cells. The new NIR dye developed for solar applications is designed to absorb more light. The current laboratory conversion efficiency is up to 12%. Compared with other thin-film batteries, BASF technicians believe that Organic solar cells are more promising.
Dr. Roger Bo, Vice Chairman of BASF's Executive Board, stated: “The exhibition tour of science and technology in Asia Pacific opened in Shanghai first. We are very excited. This highlights our investment in advanced technologies and innovations in our third largest market—China. Commitment to achieve sustainable development.†It is understood that BASF’s innovation and technology exchange will start its debut at the German headquarters at the beginning of this year and has so far toured the United States, Canada and Brazil. After the Shanghai station ends, it will land in Mumbai, Brussels, Tokyo and Seoul in 2013. .
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