EFFECT OF REGENERATION METHODS ON PERFORMANCE OF P-TYPE MULTICRYSTALLINE SILICON PERC SOLAR CELLS AND LIGHT ELEVATED TEMPERATURE INDUCED DEGRADATION（LeTID）

Yu Xunzhe; Ji Fangxu; Zhou Chunlan

doi:10.19912/j.0254-0096.tynxb.2021-1476

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (4) : 426-431. DOI: 10.19912/j.0254-0096.tynxb.2021-1476

EFFECT OF REGENERATION METHODS ON PERFORMANCE OF P-TYPE MULTICRYSTALLINE SILICON PERC SOLAR CELLS AND LIGHT ELEVATED TEMPERATURE INDUCED DEGRADATION（LeTID）

Yu Xunzhe^1,2, Ji Fangxu³, Zhou Chunlan^1,2

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Abstract

In this study, the effect of regeneration methods on the performance and the light and elevated temperature induced degradation （LeTID） of p-type multicrystalline silicon PERC（mc-Si PERC） solar cells is researched. The temperature and time of light soaking are controlled by adjusting the cooling powers and belt speeds of the chain light soaking equipment in the processing line. The results show that increasing the time and temperature of light soaking can make the solar cell obtain better LeTID stability. The effects of light soaking and electrical injection followed by light soaking on the thermal assisted LeTID of p-type multicrystalline silicon PERC solar cells is compared. Light soaking can make the non-composite active defect precursor in solar cells disappear or convert into stable defects under high-intensity photothermal conditions. Under the standard LeTID stability test conditions of 75 ℃ and 1 sun, light soaking presents the better result of reducing LeTID, and the methods combined with current injection process and light soaking regeneration show the best LeTID stability of mc-Si PERC solar cells.

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solar cells / multicrystalline silicon / defects / LeTID / light soaking process / stability

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Yu Xunzhe, Ji Fangxu, Zhou Chunlan. EFFECT OF REGENERATION METHODS ON PERFORMANCE OF P-TYPE MULTICRYSTALLINE SILICON PERC SOLAR CELLS AND LIGHT ELEVATED TEMPERATURE INDUCED DEGRADATION（LeTID）[J]. Acta Energiae Solaris Sinica. 2023, 44(4): 426-431 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1476

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