[19a-E315-1~11] 13.9 Compound solar cells

[19a-E315-6] Electronic structure of n-type SnS single crystal

〇ISSEI SUZUKI¹, Sakiko Kawanishi¹, Yuki Iguchi², Koichi Sato², Takahisa Omata¹, Hiroshi Yanagi² (1.Tohoku Univ., 2.Univ. of Yamanashi)

Keywords:SnS, Solar cell, XPS

SnS is expected as one of the new solar cell materials due to its band gap of 1.1 eV. Whereas SnS generally exhibits p-type conduction, n-type SnS which realizes homo p/n junction is inevitable to improve conversion efficiency. In this study, we analyzed the electronic structure of Cl-doped SnS single crystals, which we recently reported to exhibit n-type conduction, by XPS measurement. Br-doped SnS single crystal was also prepared and compared with Cl-doped one in the aspect of electrical property and electronic state.