Reliability analysis of temperature step-stress tests on III–V high concentrator solar cells

González, José Ramón Perán; Vázquez, M.; Núñez, Neftalí; Algora, Carlos; Rey‐Stolle, Ignacio; Galiana, B.

doi:10.1016/j.microrel.2009.04.001

Cited by 48 publications

(62 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In view of the similarities between some type of III-V concentrator solar cells and light emitting diodes (LEDs), the lifespan of CPV solar cells was predicted to be characterized by, at least, a mean time to failure (MTTF) of up to 10 5 hours [16] (equivalent to 34 years assuming an average of 8 hours of operation per day). This lowest MTTF value prediction has been recently corroborated by an step-stress accelerated ageing test in which a functional MTTF persisted longer than 69 years with a 90% unilateral confidence interval [17].…”

Section: Introductionmentioning

confidence: 65%

Reliability Improvement in III–V Concentrator Solar Cells by Means of Perimeter Protection

González¹,

Vázquez²,

Núñez³

et al. 2010

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

This paper presents the evolution in the strategy to assess the reliability of III-V solar cells and a new thermal ageing test carried out over GaAs single junction solar cells at three different temperatures (130, 150 and 170ºC). The perimeter of the solar cells has been protected with silicone, which seems to be an effective way of enhancing the reliability of the solar cells. A preliminary analysis of the results indicates a mean time to failure (MTTF) one order of magnitude larger than the one obtained in a previous thermal test with the perimeter uncoated.

show abstract

Section: Introductionmentioning

confidence: 65%

Reliability Improvement in III–V Concentrator Solar Cells by Means of Perimeter Protection

González¹,

Vázquez²,

Núñez³

et al. 2010

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

show abstract

“…The tests carried out in Ref. [9] yielded an MTTF of more than 60 years, confirming that the solar cell was not responsible for failure. Consequently, the value of g elec is considered to be unity during this test.…”

Section: Failure Analysismentioning

confidence: 74%

“…In view of the similarities between solar cells and light emitting diodes (LEDs), the lifespan of CPV solar cells was predicted to be characterized by a mean time to failure (MTTF) of up to 10 5 h [8] (equivalent to 34 years assuming an average of 8 h of operation per day). This prediction has been corroborated by an accelerated aging test in which a functional MTTF persisted longer than 69 years with a 90% unilateral confidence interval [9].…”

Section: Introductionmentioning

confidence: 70%

“…The degradation of the solar cells occurs on a longer timescale than the time frame of this set of experiments. Therefore, to reveal the failure modes of the solar cell, accelerated aging tests were carried out [9]. The tests carried out in Ref.…”

Section: Failure Analysismentioning

confidence: 99%

“…This parameter can be obtained by solving the integral of Equation (9). This calculation yields a value for the MTTF of 7080 h (about 1 year).…”

Section: Hypothesismentioning

confidence: 99%

See 2 more Smart Citations

Real‐time reliability test for a CPV module based on a power degradation model

González

Vázquez

Algora

et al. 2010

Progress in Photovoltaics

View full text Add to dashboard Cite

Models based on degradation are powerful and useful tools to evaluate the reliability of those devices in which failure happens because of degradation in the performance parameters. This paper presents a procedure for assessing the reliability of concentrator photovoltaic (CPV) modules operating outdoors in real-time conditions. With this model, the main reliability functions are predicted. This model has been applied to a real case with a module composed of GaAs singlejunction solar cells and total internal reflection (TIR) optics.

show abstract