Systematic optimization of MWCNT-PEDOT:PSS composite electrodes for organic transistors and dye-sensitized solar cells: Effects of MWCNT diameter and purity

被引:11
|
作者
Yun, Dong-Jin [1 ]
Jeong, Yong Jin [1 ]
Ra, Hyemin [1 ]
Kim, Jung-Min [1 ]
An, Tae Kyu [2 ,3 ]
Rhee, Shi-Woo [1 ]
Jang, Jaeyoung [4 ]
机构
[1] Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea
[2] Korea Natl Univ Transportat, Dept Polymer Sci & Engn, Chungju 27469, South Korea
[3] Korea Natl Univ Transportat, Dept IT Convergence, Chungju 27469, South Korea
[4] Hanyang Univ, Dept Energy Engn, Seoul 04763, South Korea
基金
新加坡国家研究基金会;
关键词
Multi-walled carbon nanotube (MWCNT); PEDOT:PSS; Hydrochloric acid-methanol treatment; Organic thin-film transistors; Dye-sensitized solar cells; MULTIWALL CARBON NANOTUBE; COUNTER ELECTRODE; FILMS; TRANSPARENT; GRAPHENE; FABRICATION; PERFORMANCE; DISPERSION; OXIDATION; SULFONATE;
D O I
10.1016/j.orgel.2017.10.007
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Multi-walled carbon nanotubes (MWCNTs) and polymer composites have attracted significant attention as metal-free electrode materials for various electronic devices. Many studies have presented strategies to enhance the electrical conductivity of MWCNT/polymer composites. However, systematic studies on the effects of MWCNT features on the composite properties are still missing. Such studies can further the development of MWCNT/polymer-based conducting materials. Herein, we characterize composite films of MWCNTs and poly (3,4-ethylenedioxythiophene) polymerized with poly(4-styrenesulfonate) (PEDOT:PSS), with variations in the MWCNT diameter and purity. MWCNT features greatly affect the physical/chemical/electrical properties of the MWCNT/PEDOT:PSS composite films. In addition, the diameter and purity of MWCNTs also influenced the transition behavior of the composite films during the hydrochloric acid-methanol treatment, which was performed for increasing electrical conductivity. As a result, we could optimize the performance of organic transistors and dye-sensitized solar cells (DSSCs) using MWCNT/PEDOT:PSS composite films as source/drain electrodes and catalytic counter electrodes, respectively. Furthermore, using the optimized device parameters, we successfully fabricated high performance fluorine doped tin oxide-free DSSCs and high-gain organic complementary inverters using MWCNT/PEDOT:PSS composite electrodes.
引用
收藏
页码:7 / 16
页数:10
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