[14a-PA5-1~23] 13.9 Compound solar cells

[14a-PA5-20] Characterization of n-ZnS Thin Films Deposited by Thermal Evaporation

〇Nanaki Miura¹, Myeongok Kim², Ahsan Nazmul³, Okada Yoshitaka^1,3 (1.Elec. Eng. UTokyo, 2.Grad. Arts and Sci. UTokyo, 3.RCAST UTokyo)

Keywords:CIGS, Buffer layer

CIGS solar cells have the highest efficiency among thin-film solar cells. When designing multi-junction and intermediate band solar cells, CuGaS2 which has the same crystal structure as CIGS, is expected as a wide-gap host material. On the other hand, for the buffer layer, a material having a wider gap than the mainstream CdS is desired. Therefore, in this study, we evaluated how the substrate temperature change when n-ZnS satisfying the conditions is thermal evaporated on CuGaS2 affects the measurement results.