ФТП, 2004, том 38, выпуск 8

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Japan programs on novel concepts in PV

MasafumiYamaguchi , TatsuyaTakamoto *, KenjiAraki =/=, MitsuruImaizumi +

Toyota Technological Institute, 2-12 Hisakata, Tempaku, Nagoya 468-8511, Japan
* Sharp Corporation, Hajikami, Shinjo, Nara 639-2198, Japan
=/= Daido Steel Corporation, Daido-cho, Minami, Nagoya 457-8545, Japan
+ NASDA, Sengen, Tsukuba, Ibaraki 305-8505, Japan

(Получена 9 февраля 2004 г. Принята к печати 11 февраля 2004 г.)

Japanese R\&D activities in photovoltaics (PV) and our R\&D activities of III--V compound multijunction (MJ) solar cells are presented. We have realized high-efficiency InGaP/InGaAs 3-junction solar cells with an efficiency of 36.5--37% (AM1.5G, 200 suns) and concentrator 3-junction solar cell modules of an outdoor efficiency of 27% as a result of designing grid structure, developing low optical loss Fresnel lens and homogenizers, and designing low thermal conductivity modules. We are now challenging to develop low-cost and high output power concentrator MJ solar cell modules with an output power of 400 W/m2 for terrestrial applications.

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