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Davud Mostafa Tobnaghi

Bio: Davud Mostafa Tobnaghi is an academic researcher. The author has contributed to research in topics: Crystalline silicon & Solar cell. The author has an hindex of 1, co-authored 1 publications receiving 1 citations.

Papers
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01 Jan 2014
TL;DR: In this article, the photoelectric parameters of mono-crystalline silicon solar cells degraded under gamma radiation can be significant recovered by MHz-frequency ultrasonic treatment (UST) under AM 1.5 illumination condition.
Abstract: To simulate and accelerate of the aging effects, silicon solar cells were exposed to the different doses of co 60 gamma radiation. The current-voltage (I-V) characteristics of mono-crystalline solar cells under AM1.5 illumination condition were studied before and after the gamma irradiation. Experimental results showed that the solar cell parameters such as open circuit voltage (V oc ), short circuit current (I sc ) and efficiency (η) decrease with the increase of the gamma radiation doses. The photoelectric parameters of mono crystalline silicon solar cells degraded under gamma radiation can be significant recovered by MHz-frequency ultrasonic treatment (UST). The performance of UST to restores of the aged silicon solar cells parameters compared to thermal annealing method has been shown in this paper.

1 citations


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Journal ArticleDOI
TL;DR: In this article, the electrical parameters of degraded silicon solar cells can be significantly recovered by ultrasonic treatment (UST), which is related to a redistribution of the radiation defects and an increase in the homogeneity of a solar cells crystal structure.
Abstract: In the lifetime of solar cells and under normal operating conditions, electrical parameters of solar cells are degrading continuously because solar cells are ageing during outdoor exposure, which could deteriorate their electrical characteristics. In this paper, to simulate and accelerate the effects of aging, solar cells are exposed to the different doses of gamma radiation, since gamma radiation and aging produces similar effects in semiconducting devices. The electrical parameters of degraded silicon solar cells can be significantly recovered by ultrasonic treatment (UST). The restores of the silicon solar cells parameters such as efficiency (η), open circuit voltage (V oc ), short circuit current (I sc ), among other, after ultrasonic treatment is related to a redistribution of the radiation defects and an increase in the homogeneity of a solar cells crystal structure.

1 citations