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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.
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