CIS type thin-film solar cells which use copper (Cu), indium (In), selenium (Se) as a light absorbing layer are thinner than crystalline silicon type solar cells. Under a NEDO contract, the company prepared cells of about 1 cm2from this material, not containing cadmium, and reached 23.235 % energy conversion efficiency. Ongoing work on scaling this technology is considered a great step forward toward reducing the power generation costs of solar cells that combine the high performance and high reliability.

NEDO news release, January 17, 2019

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