Annual output estimation of concentrator photovoltaic systems using high-efficiency InGaP/InGaAs/Ge triple-junction solar cells based on experimental solar cell's characteristics and field-test meteorological data

The temperature dependences of the electrical characteristics of InGaP/InGaAs/Ge triple-junction solar cells under concentration were evaluated. For these solar cells, conversion efficiency ( η ) decreased with increasing temperature, and increased with increasing concentration ratio owing to an inc...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2006-01, Vol.90 (1), p.57-67
Main Authors: Nishioka, Kensuke, Takamoto, Tatsuya, Agui, Takaaki, Kaneiwa, Minoru, Uraoka, Yukiharu, Fuyuki, Takashi
Format: Article
Language:English
Subjects:
Annual output
Applied sciences
Concentration
Energy
Exact sciences and technology
Multijunction solar cell
Natural energy
Photovoltaic conversion
Solar cells. Photoelectrochemical cells
Solar energy
Temperature coefficient
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Summary:The temperature dependences of the electrical characteristics of InGaP/InGaAs/Ge triple-junction solar cells under concentration were evaluated. For these solar cells, conversion efficiency ( η ) decreased with increasing temperature, and increased with increasing concentration ratio owing to an increase in open-circuit voltage. The decrease in η with increasing temperature decreases with increasing concentration ratio. Moreover, the annual output of a concentrator system with a high-efficiency triple-junction cell was estimated utilizing the experimental solar cell's characteristics obtained in this study and field-test meteorological data collected for 1 year at the Nara Institute of Science and Technology, and compared with that of a nonconcentration flat-plate system.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2005.01.011