| 초록 |
For efficient thermoelectric energy production using Seebeck effect, improvement of power factor (PF) is required. (PF=σα2, σ:electrical conductivity (S/cm), α:Seebeck coefficient (µV/K)) Several methods to improve PF, such as solvent treatment, nano-structuring, and composite, have a strong inversely coupling problem between α and σ [1]. Poly(3,4-ethylenedioxythio-phene):poly(styrenesulfonate)PEDOT:PSS/poly(aniline-camphorsulfonic acid) PANI-CSA multilayer structure has been reported as the de-coupling effect to maintain α and increase σ [2]. However they did not consider the problem of σ being lowered due to excess PSS remaining in PEDOT layer. To improve PF while maintaining α, removal of insulating PSS components is required. Here, we suggest spin speed engineering that removes more PSS using higher spin speed due to stronger interaction with solvent than PEDOT. PSS were 1.2 times more removed due to 2.6 times increase in spin speed and confirmed by XPS. |
