2012 经典Japanese RD Activities of High Efficiency III-V Compound Multi-Junction and Concentrator Solar Cells 1-s2.0-S1876610212003670-main.pdfVIP

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2012 经典Japanese RD Activities of High Efficiency III-V Compound Multi-Junction and Concentrator Solar Cells 1-s2.0-S1876610212003670-main.pdf

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2012经典JapaneseR

Available online at Energy Procedia Energy Procedia 00 (20 11) 000–000 Energy Procedia 15 (2012) 265 – 274 /locate/procedia International Conference on Materials for Advanced Technologies 2011, Symposium O Japanese RD Activities of High Efficiency III-V Compound Multi-Junction and Concentrator Solar Cells * Masafumi Yamaguchi Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan Abstract This paper reviews Japanese RD activities of III-V compound multi-junction (MJ) and concentrator solar cells. As a result of advanced technologies development for high efficiency cells and discovery of superior radiation -resistance of InGaP based materials, InGaP-based MJ solar cells have been commercialised for space use in Japan. A new world-record efficiency of 35.8% at 1 sun has been achieved with InGaP/GaAs/InGaAs 3-junction solar cell. MJ solar cells composing of multi-layers with different bandgap energies have the potential for achieving high conversion efficiencies of over 50% and are promising for space and terrestrial applicati ons due to wide photo response. In order to solve the problems of difficulties in