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Titre du document / Document title

Super high-efficiency multi-junction and concentrator solar cells

Auteur(s) / Author(s)

YAMAGUCHI Masafumi (1) ; TAKAMOTO Tatsuya (2) ; ARAKI Kenji (1 3) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, JAPON
(2) Sharp Corporation, 282-1 Hajikami, Shinjo, Nara 639-2198, JAPON
(3) Daida Steel Corporation, 2-30 Daido-cho, Minami, Nagoya 457-8545, JAPON

Résumé / Abstract

III-V compound multi-junction (MJ) (tandem) solar cells have the potential for achieving high conversion efficiencies of over 50% and are promising for space and terrestrial applications. We have proposed AlInP-InGaP double hetero (DH) structure top cell, wide-band gap InGaP DH structure tunnel junction for sub cell interconnection, and lattice-matched InGaAs middle cell. In 2004, we have successfully fabricated world-record efficiency concentrator InGaP/InGaAs/Ge 3-junction solar cells with an efficiency of 37.4% at 200-suns AM 1.5 as a result of widening top cell band gap, current matching of sub cells, precise lattice matching of sub cell materials, proposal of InGaP-Ge heteroface bottom cell, and introduction of DH-structure tunnel junction. In addition, we have realized high-efficiency concentrator InGaP/InGaAs/Ge 3-junction solar cell modules (with area of 7000 cm2) with an out-door efficiency of 27% as a result of developing high-efficiency InGaP/ InGaAs/Ge 3-junction cells, low optical loss Fresnel lens and homogenizers, and designing low thermal conductivity modules. Future prospects are also presented. We have proposed concentrator III-V compound MJ solar cells as the 3rd-generation solar cells in addition to 1st-generation crystalline Si solar cells and 2nd-generation thin-film solar cells. We are now challenging to develop low-cost and high output power concentrator MJ solar cell modules with an output power of 400 W/m2for terrestrial applications and high-efficiency, light-weight and low-cost MJ solar cells for space applications.

Revue / Journal Title

Solar energy materials and solar cells    ISSN  0927-0248 

Source / Source

Congrès
PVSEC-14 : International Photovoltaic Science and Engineering Conference No14, Bangkok , THAILANDE (27/01/2004)
2006, vol. 90, no 18-19 (534 p.)  [Document : 10 p.] (11 ref.), pp. 3068-3077 [10 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1992) (Revue)

Mots-clés anglais / English Keywords

Costs

;

Crystalline material

;

Solar energy concentrator

;

Thermal conductivity

;

Fresnel lens

;

Optical lens

;

Concentrator solar cells

;

Tunnel junction

;

Geoelectricity

;

Tandem solar cell

;

Space application

;

III-V compound

;

Multijunction solar cells

;

High efficiency

;

Mots-clés français / French Keywords

Coût

;

Matériau cristallin

;

Concentrateur solaire

;

Conductivité thermique

;

Lentille Fresnel

;

Lentille optique

;

Cellule solaire concentrateur

;

Jonction tunnel

;

Géoélectricité

;

Cellule solaire tandem

;

Application spatiale

;

Composé III-V

;

Cellule solaire multijonction

;

Rendement élevé

;

Mots-clés espagnols / Spanish Keywords

Coste

;

Material cristalino

;

Concentrador solar

;

Conductividad térmica

;

Lente Fresnel

;

Lente óptico

;

Unión túnel

;

Geoelectricidad

;

Célula solar tándem

;

Aplicación espacial

;

Compuesto III-V

;

Rendimiento elevado

;

Mots-clés d'auteur / Author Keywords

Multi-junction solar cells

;

III-V compounds

;

Concentrator solar cells

;

Concentrator modules

;

High conversion efficiency

;

Tunnel junction

;

Localisation / Location

INIST-CNRS, Cote INIST : 18016, 35400014290366.0160

Nº notice refdoc (ud4) : 18159730



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