Compatibility of cellulose-PEDOT:PSS composites and anions in solid-state organic electrochemical transistors

被引:1
|
作者
Lee, Solin [1 ]
Kim, Donguk [1 ]
Meresa, Alem Araya [1 ]
Chang, Suk Tai [1 ]
Kim, Felix Sunjoo [1 ]
机构
[1] Chung Ang Univ CAU, Dept Chem Engn, Seoul 06974, South Korea
基金
新加坡国家研究基金会;
关键词
Conducting polymer composite; Cellulose derivative; Biopolymer; Ionic liquid; Organic electrochemical transistor; ELECTRICAL-CONDUCTIVITY; POLY(3,4-ETHYLENEDIOXYTHIOPHENE); PERFORMANCE; IMPROVEMENT; POLYMERS; FILMS;
D O I
10.1016/j.carbpol.2024.123146
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
We investigate the effects of water-processable celluloses on the charge-transport properties in the conducting polymer composites and their solid-state organic electrochemical transistors (OECTs). Water-soluble methyl cellulose (MC) and water-dispersible cellulose nanofiber (CNF) are blended with poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) in solution and used as a conductive channel. Both cellulose-PEDOT:PSS composites show fibrillar structures in thin films with respective dimensions of cellulose. The electrical conductivity was increased with 5-10 wt% of cellulose in the composite. The solid-state OECTs show better performance when the ionogel contains 1-ethyl-3-methylimidazolium triflate (EMIM:OTf) compared to the system with the commonly used EMIM bis(trifluoromethyl sulfonyl)imide (EMIM:TFSI). The MC-PEDOT:PSS composite paired with an EMIM:OTf-based ionogel exhibits a high figure-of-merit (mu C*) of OECTs of >50 F cm(-1) V-1 s(-1) and an on-to-off current ratio of >10(3). Our results show that cellulose and EMIM:OTf are compatible with PEDOT:PSS and that appropriate materials pairing can improve the properties of PEDOT:PSS-based composites and the performance of their electrochemical devices.
引用
收藏
页数:10
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