Development of a robust and high efficiency concentrator receiver

One of the difficulties in development of concentrator receiver using III-V solar cells is realization of robust structure with capable of high current density. Most of the cases, the top electrodes were cabled by wire bonding, conductive epoxy and silver ribbon blazing, which gradually increases series resistance under severe environment and loses reliability. Extending the MJ cell performance envelope to the economically required higher current levels and higher current density levels has involved serious and unexpected challenges. A new and robust concentrator receiver was developed with capable of more than 500X of concentration. A 6300 cm/sup 2/ and 400X concentrator module were fabricated with the new receivers. The average efficiency in clear day was 21.7%.

[1]  Gregory S. Glenn,et al.  High concentration testing and performance of multijunction solar cells , 2002, Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002..

[2]  K. Emery,et al.  Spectral corrections based on optical air mass , 2002, Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002..

[3]  R. Bird,et al.  Simple Solar Spectral Model for Direct and Diffuse Irradiance on Horizontal and Tilted Planes at the Earth's Surface for Cloudless Atmospheres , 1986 .

[4]  F. Dimroth,et al.  Progress in development of all-glass terrestrial concentrator modules based on composite Fresnel lenses and III-V solar cells , 2000, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036).

[5]  K. Araki,et al.  Japanese R&D activities of multi-junction and concentrator solar cells , 2002, Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002..

[6]  C. Whitaker,et al.  Outdoor meteorological broadband and spectral conditions for evaluating photovoltaic modules , 2000, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036).

[7]  K. Araki,et al.  Study of the space factor for spectrum-sensitive MJ solar cell arrays , 2003, 3rd World Conference onPhotovoltaic Energy Conversion, 2003. Proceedings of.

[8]  K. Araki,et al.  A simple passive cooling structure and its heat analysis for 500/spl times/ concentrator PV module , 2002, Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002..

[9]  F. Dimroth,et al.  Development of III-V-based concentrator solar cells and their application in PV-modules , 2002, Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002..

[10]  Antonio Luque,et al.  High efficiency and high concentration in photovoltaics , 1999 .