[15a-A41-1~12] 12.5 Organic solar cells

[15a-A41-12] Synthesis of Highly Conductive PEDOT:PSS and Application to Hybrid Solar Cells

〇hiroki amemiya¹, Naoya Katsuyama¹, Kazuki Kudo¹, Hidenori Okuzaki¹ (1.Yamanashi Univ.)

Keywords:PEDOT:PSS, Hybrid solar cell, Hoghly electrical conductivity

Poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) (PEDOT:PSS) (Fig. 1) in the form of an water dispersion as colloidal gel particles is one of the most successful conducting polymers having hierarchical structures. Because of its processability, transparency, high electrical conductivity and thermal stability, the PEDOT:PSS has potential applications to electrical and optical devices such as capacitor, hole transport layer, and transparent electrodes for touch panels and flexible displays¹⁾. However, the electrical conductivity of the PEDOT:PSS is still lower compared to the indium tin oxide (ITO) for the practical applications. In this study, we have succeeded in synthesizing PEDOT:PSS with a conductivity as high as 1145 S/cm by optimizing the polymerization temperature. Furthermore, hybrid solar cells consisting of PEDOT:PSS and n-Si substrate were fabricated and photoelectric conversion characteristics have been investigated.