Solar Frontier announces 20.9% efficiency for CIS solar cell

Japanese copper-indium-diselenide (CIS) thin-film module producer Solar Frontier K.K., a subsidiary of Showa Shell Sekiyu K.K., announced it achieved 20.9% conversion efficiency for a 0.5cm2 CIS solar cell. The certified result, confirmed by German research center Fraunhofer Institute for Solar Energy Systems ISE, beats the previous record of 19.7%, which was also set by Solar Frontier. Solar Frontier CTO Satoru Kuriyagawa said: » Solar Frontier’s new 20.9% efficiency record resulted from a CIS cell cut from a 30cm by 30cm substrate produced using a sputtering-selenization formation method - the same method we use in our factories. The significance is twofold: it ensures we can transfer our latest achievement into mass production faster, and it proves the long-term conversion efficiency potential of Solar Frontier’s proprietary CIS technology.«

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