[10a-Z11-1~11] 12.5 Organic solar cells

▼ [10a-Z11-3] Optical and Electrical Characterization of Doped PEDOT:PSS for Hybrid Solar Cell Applications

〇(M2)Aditya Saha¹, Ohori Daisuke^1,2,4, Sasaki Takahiko³, Itoh Keisuke⁵, Toko Susumu¹, Samukawa Seiji^1,4 (1.IFS, Tohoku Univ., 2.NCTU, 3.IMR, Tohoku Univ., 4.AIMR, Tohoku Univ., 5.ITIM)

Keywords:PEDOT:PSS, Hybrid-solar cells

Module cost accounts for around 36% of the price of current cells at around 40,000 yen/kWh. The high vacuum and high-temperature production techniques employed in commercial Si-based solar cells set a limit to lowering prices. Organic-silicon hybrid solar cells can take advantage of low-cost processing techniques of conjugated polymers and the optoelectrical properties of Si to reduce the module cost while maintaining high performance. Achieving parity in efficiency with current inorganic solar cells has the potential to significantly drop the price of solar cells. Poly (3,4 ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been widely used due to its high conductivity and thermal stability. The high transparency of PEDOT:PSS makes it an attractive transparent electrode or absorber layer. Our previous work focused on achieving a repeatable highly uniform layer on Si and SiO₂ substrates. These films commonly contain dopants like DMSO and X-100 to enhance performance. In this study, the impacts that different dopant concentrations have on the optical and electrical properties of the film have been investigated.