Publication date: 6th November 2020
CIS is a chalcopyrite thin-film photovoltaic material with the chemical formula CuInSe2 that serves as a scaffold for the alloying components Ag, Ga, S, in conjunction with alkali metals such as Na, K, Rb, and Cs. In this presentation, the prospects for CIS solar cell research and development, starting from 2020 in Japan, supported by the New Energy and Industrial Technology Development Organization (NEDO) under the Ministry of Economy, Trade and Industry (METI), is introduced. The new NEDO project on CIS solar cells focuses on contributions to the development of light-weight solar modules fabricated by Idemitsu kosan Co., Ltd. (Solar Frontier) using a variety of substrates including metal-foils. Enhancements in CIS solar module performance to extend CIS module use to factory and car roofs, as well as conventional houses and buildings are a key goal.
The talk will include the following topics;
- An introduction to the new NEDO project.
- The road to improvements in the fill factor: (i) recombination in the bulk and at interfaces; (ii) the p-n junction revisited; (iii) device area uniformity; (iv) the physics and chemistry of the CIGS growth process; (v) the modification of CIS photoabsorber layers on different substrate materials; (vi) the CIS/Mo interface.
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