Terahertz complex conductivity of cellulose nanocrystal based composite films controlled with PEDOT:PSS blending ratio

被引：5

作者：

Unuma, Takeya ^{[1
]}

Kobayashi, Omou ^{[1
]}

Kotaka, Shoya ^{[1
]}

Koppolu, Rajesh ^{[2
]}

Toivakka, Martti ^{[2
]}

Saarinen, Jarkko J. ^{[3
]}

机构：

[1] Nagaoka Univ Technol, Dept Elect Elect & Informat Engn, Nagaoka, Niigata 9402188, Japan

[2] Abo Akad Univ, Ctr Funct Mat, Lab Nat Mat Technol, Porthansgatan 3, Abo Turku 20500, Finland

[3] Univ Eastern Finland, Dept Chem, POB 111, Joensuu 80101, Finland

来源：

CELLULOSE | 2020年 / 27卷 / 17期

基金：

芬兰科学院;

关键词：

Cellulose nanocrystals; Conducting polymers; Composite films; Terahertz spectroscopy; Charge transport; THIN-FILMS; NANOCELLULOSE; TRANSPARENT; MORPHOLOGY; BULK;

D O I：

10.1007/s10570-020-03464-4

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

We investigate the terahertz complex conductivity spectra of cellulose nanocrystal (CNC) based composite films fabricated with different blending ratios of the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and without/with glycerol additive. A partially localized nature of carriers in the composite is clearly seen in the obtained spectral shapes of complex conductivity and is well described by an extended Drude model. We find that the carriers become denser and less localized with increasing PEDOT:PSS blending ratio and that the addition of glycerol to the composite is efficacious in enhancing carrier delocalization as well as mechanical flexibility.

引用

页码：10019 / 10027

页数：9