N. Núñez, J. R. González, M. Vázquez, C. Algora and P. Espinet Evaluation of the reliability of high concentrator GaAs solar cells by means of temperature accelerated aging tests Progress in Photovoltaics: Research and Applications 21
This work estimates the degradation and reliability of high concentration GaAs solar cells. Cells were tested under high thermal accelerated conditions and emulated operation under 700 or 1050 suns. Solar cell temperature working appeared to be the primary determinant of degradation [700X (left figure) and 1050X (right figure)], reliability and warranty period, with concentration being the secondary determinant. A 30-year warranty for these 1 mm2-sized GaAs cells may be offered for both cell concentrations if operated at a working temperature of 65 °C.
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