Ti₃C₂Tx MXene was synthesized by selective etching of Al layer in Ti₃AlC₂ MAX phase, and applied as catalyst for the regeneration of I ^‾ /I₃^‾ redox mediator in dye-sensitized solar cells (DSSCs). Insulating poly(vinylidene fluoride) (PVdF), semiconducting poly(3-hexylthiophene) (P3HT), and electron-conductive poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) as binder resins of Ti₃C₂Tx MXene catalyst were exploited, and their effects on the performance of DSSCs were investigated. A DSSC with the Ti₃C₂Tx MXene catalyst and insulating PVdF binder showed a power conversion efficiency (PCE) of 3.02% and fill factor (FF) of 27.45%. In the case of the semiconducting P3HT binder resin, PCE and FF were measured to be 3.46% and 29.33%, respectively. On the contrary, a 4.53% PCE and 40.47% FF were achieved in a DSSC, in which the electron-conductive PEDOT:PSS was applied as binder resin of Ti₃C₂Tx catalyst layer.

맥신 화합물인 Ti₃C₂Tx를 합성하였으며 염료감응형 태양전지용 촉매로 이용하였다. Ti₃C₂Tx 촉매층 형성을 위한바인더 수지로서 절연성의 poly(vinylidene fluoride)(PVdF), 반도체성의 poly(3-hexylthiophene)(P3HT) 및 전자전도성 poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)를 사용하였으며, 태양전지 성능에 미치는 영향을 조사하였다. 바인더 수지로서 PVdF를 사용한 태양전지의 경우 3.02%의 전력변환효율과 27.45%의 충진율을 나타내었으며, P3HT의 경우, 태양전지 효율은 3.46% 및 충진율은 29.33%로 측정되었다. 반면에 전자전도성 PEDOT:PSS를 적용한 태양전지는 4.53%의 효율과 40.47%의 충진율을 나타내었으며, 절연성 및 반도체성 바인더 수지보다 높은 태양전지 성능을 보였다.

Keywords: Ti₃C₂Tx MXene, catalyst, dye-sensitized solar cell, binder resin, poly(3,4-ethylenedioxythiophene):poly (styrenesulfonate).