[19a-P5-1~38] 12.5 Organic solar cells

[19a-P5-17] Fabrication of printable thin film solar cells using BiI₃ absorber layer

〇Syohei Sasagawa¹, Hinako Ebe¹, Hideaki Araki¹ (1.Nat. Inst. Tech., Nagaoka Coll.)

Keywords:BiI3,printable,thin film solar cells

Solid state printable solar cells have recently attracted considerable attention due to their low cost. In this study, In order to fabricate photovoltaic cells with the structure of FTO/compact-TiO₂/porous-TiO₂/BiI₃/spiro-MeOTAD/Au, the BiI₃ thin film was deposited by spin-coat onto a FTO glass/compact-TiO₂/porous-TiO₂ substrate. The solar cell with the BiI₃ thin film exhibited an open-circuit voltage of 0.32 V, a short-circuit current density of 0.48 mA/cm², a fill factor of 0.36, and a power conversion efficiency of 0.056%.