Low-T anneal as cure for LeTID in Mc-Si PERC cells

Marko Yli-Koski, Toni P. Pasanen, Ismo Heikkinen, Michael Serué, Hele Savin

Tutkimustuotos: LehtiartikkeliConference articleScientificvertaisarvioitu

4 Sitaatiot (Scopus)
86 Lataukset (Pure)


Light and elevated temperature induced degradation (LeTID) is known to be affected by the last dark anneal that the silicon wafers or cells experience prior to illumination. Here we study how low-temperature dark anneal performed on
fully processed multicrystalline silicon (mc-Si) passivated emitter and rear solar cells (PERC) influences LeTID characteristics, both the intensity of the degradation and the degradation kinetics. Our results show that a relatively long
anneal at 300 °C provides an efficient means to minimize LeTI D while too short dark anneal at the same temperature seems to have a negative impact on the subsequent degradation under light soaking. Finally, we compare the experimental results with the model originally developed for metal precipitation
and discuss the possibility of metals being involved in LeTID mechanism.
DOI - pysyväislinkit
TilaJulkaistu - 27 elok. 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaInternational Conference on Crystalline Silicon Photovoltaics - Leuven, Belgia
Kesto: 8 huhtik. 201910 huhtik. 2019
Konferenssinumero: 9


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