Flexible Textile-Based Organic Transistors Using Graphene/Ag Nanoparticle Electrode.
Highly flexible and electrically-conductive multifunctional textiles are desirable for use in wearable electronic applications. In this study, we fabricated multifunctional textile composites by vacuum filtration and wet-transfer of graphene oxide films on a flexible polyethylene terephthalate (PET) textile in association with embedding Ag nanoparticles (AgNPs) to improve the electrical conductivity. A flexible organic transistor can be developed by direct transfer of a dielectric/semiconducting double layer on the graphene/AgNP textile composite, where the textile composite was used as both flexible substrate and conductive gate electrode. The thermal treatment of a textile-based transistor enhanced the electrical performance (mobility = 7.2 cm²·V-1·s-1, on/off current ratio = 4 × 10⁵, and threshold voltage = -1.1 V) due to the improvement of interfacial properties between the conductive textile electrode and the ion-gel dielectric layer. Furthermore, the textile transistors exhibited highly stable device performance under extended bending conditions (with a bending radius down to 3 mm and repeated tests over 1000 cycles). We believe that our simple methods for the fabrication of graphene/AgNP textile composite for use in textile-type transistors can potentially be applied to the development of flexible large-area electronic clothes.
C-Industry Incubation Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea. younkim@krict.re.kr.
Youn
Y
Kim
C-Industry Incubation Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea. kyj0905@krict.re.kr.
Yeon Ju
YJ
Kwon
Composites Research Division, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea. leeke88@kims.re.kr.
Kang Eun
KE
Lee
Composites Research Division, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea. youngsoh@kims.re.kr.
Youngseok
Y
Oh
Composites Research Division, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea. umk1693@kims.re.kr.
Moon-Kwang
MK
Um
Composites Research Division, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea. dgseong@kims.re.kr.
Dong Gi
DG
Seong
C-Industry Incubation Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea. leeju@krict.re.kr.
Jea Uk
JU
Lee
e-textile; graphene oxide; textile composite; textile transistor