Ultra-flexible, stretchable, highly conductive and multi-functional textiles enabled by brush-painted PEDOT:PSS. (23rd July 2020)

• Record Type: Journal Article
• Authors: Jin, In Su; Lee, Woosung; Lim, Seung Ju; Ko, Jae Hoon; Jung, Jae Woong
• Is Part Of: Smart materials and structures. Volume 29:Number 9(2020)
• Publication Date: 2020-07-23
• Subjects: electronic textiles -- stretchable/conductive textiles -- PEDOT:PSS -- brush-painting; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/1361-665X/ab9ddc
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: Electronic textile (E-textile) with excellent electrical/mechanical properties in large area is an essential component for wearable electronics. We herein demonstrated that brush-painting is a promising printing technique of poly(3, 4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) on fabric substrates to prepare ultra-flexible, stretchable, and highly conductive E-textiles. The brush-painting allows uniform film surface with much lower sheet resistance which is opposite to agglomerated particulates of the film from the drop-casting. As a result, the PEDOT:PSS-based E-textiles achieve high conductivity of 6.4 S cm −1 after successive bush-painting up to 50 times with excellent mechanical properties including bending, stretching, and washing stability. The brush-painted E-textiles exhibit excellent Joule heating properties with low operative voltage and quick response time. In addition, the large-area piezoresistive sensors have been realized by the brush-painted E-textiles, suggesting its great potential of the brush-painting PEDOT:PSS toward multi-functional smart textiles or wearable electronics.