期刊
POLYMERS
卷 15, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/polym15122725
关键词
counter electrode; DSSC; electrolyte; PEDOT; Carrageenan; PSS
PEDOT:PSS is commonly used as a counter electrode in dye-sensitized solar cells (DSSC), while PEDOT:Carrageenan has been introduced as an electrolyte. This review provides an overview of the different roles of PEDOT:PSS and PEDOT:Carrageenan in DSSC. It also describes the synthesis process and characteristics of both materials. Overall, PEDOT:PSS functions as a counter electrode by transferring electrons back to the cell and accelerating redox reactions, while PEDOT:Carrageenan as an electrolyte does not effectively regenerate the dye sensitized at the oxidized state, resulting in a lower performance in DSSC.
Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) has been mostly used as a counter electrode to give a high performance of dye-sensitized solar cell (DSSC). Recently, PEDOT doped by carrageenan, namely PEDOT:Carrageenan, was introduced as a new material to be applied on DSSC as an electrolyte. PEDOT:Carrageenan has a similar synthesis process as PEDOT:PSS, owing to their similar ester sulphate (-SO3H) groups in both PSS and carrageenan. This review provides an overview of the different roles between PEDOT:PSS as a counter electrode and PEDOT:Carrageenan as an electrolyte for DSSC applications. The synthesis process and characteristics of PEDOT:PSS and PEDOT:Carrageenan were also described in this review. In conclusion, we found that the primary role of PEDOT:PSS as a counter electrode is to transfer electrons back to cell and accelerate redox reaction with its superior electrical conductivity and high electrocatalytic activity. PEDOT:Carrageenan as an electrolyte has not shown the main role for regenerating the dye sensitized at the oxidized state, probably due to its low ionic conductivity. Therefore, PEDOT:Carrageenan still obtained a low performance of DSSC. Additionally, the future perspective and challenges of using PEDOT:Carrageenan as both electrolyte and counter electrode are described in detail.
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