[11p-W834-1~18] 13.2 Exploratory Materials, Physical Properties, Devices

[11p-W834-18] Investigations of defects inside bulk and thin-film BaSi₂ by EPR

〇Takuma Sato^1,2, Serge Gambarelli², Anne-Laure Barra³, Takashi Suemasu¹ (1.Univ. of Tsukuba, 2.UGA, CEA, CNRS, INAC-SyMMES, 3.LNCMI-CNRS)

Keywords:Electron Paramagnetic Resonance, thin-film solar cells, lattice defects

We have paid special attentions on BaSi₂ which is expected as one of the promissing materials of novel thin-film solar cells. In a hetero structure of Si and this material, we acieved a maximum convertion efficiency among silicide system. Furthermore, in our laboratory, we have succeded in solar cells operations in BaSi₂ homo structures lately. In present study, to attain further improvement of convertion efficiency, we focus on deffects inside BaSi₂, which is one of the most important factor from the view point of application.