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Spirally Wrapped Carbon Nanotube Microelectrodes for Fiber Optoelectronic Devices beyond Geometrical Limitations toward Smart Wearable E-Textile Applications.
Kim, Hyoungjun; Kang, Tae-Hyung; Ahn, Jongtae; Han, Hyemi; Park, Seongjin; Kim, Soo Jin; Park, Min-Chul; Paik, Seung-Ho; Hwang, Do Kyung; Yi, Hyunjung; Lim, Jung Ah.
Afiliação
  • Kim H; Center for Optoelectronic Materials and Devices, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
  • Kang TH; Department of Nano and Information Technology, KIST School, Korea University of Science and Technology (KUST), Daejeon 34113, Republic of Korea.
  • Ahn J; Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
  • Han H; Center for Optoelectronic Materials and Devices, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
  • Park S; Center for Optoelectronic Materials and Devices, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
  • Kim SJ; Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
  • Park MC; Center for Optoelectronic Materials and Devices, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
  • Paik SH; Center for Optoelectronic Materials and Devices, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
  • Hwang DK; Department of Nano and Information Technology, KIST School, Korea University of Science and Technology (KUST), Daejeon 34113, Republic of Korea.
  • Yi H; KLIEN Inc, Seoul Biohub, 117-3, Hoegi-ro, Dongdaemun-gu, Seoul 02455, Republic of Korea.
  • Lim JA; Center for Optoelectronic Materials and Devices, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
ACS Nano ; 14(12): 17213-17223, 2020 Dec 22.
Article em En | MEDLINE | ID: mdl-33295757
ABSTRACT
Fiber optoelectronics technology has recently attracted attention as enabling various form factors of wearable electronics, and the issue of how to control and optimize the configuration and physical properties of the electrode micropatterns in the microfiber devices has become important. Here, spirally wrapped carbon nanotube (CNT) microelectrodes with a controlled dimension are demonstrated for high-performance fiber optoelectronic devices. Inkjet-printed CNT microelectrodes with the desired dimension on an agarose hydrogel template are rolling-transferred onto a microfiber surface with an efficient electrical interface. A fiber organic field-effect transistor with spirally wrapped CNT microelectrodes verifies the feasibility of this strategy, where the transferred microelectrodes intimately contact the organic semiconductor active layer and the output current characteristics are simply controlled, resulting in characteristics that exceed the previous structural limitations. Furthermore, a fiber organic photodiode with spirally wrapped CNT microelectrodes, when used as a transparent electrode, exhibits a high Ilight/Idark ratio and good durability of bending. This fiber photodiode can be successfully incorporated into a textile photoplethysmography bandage for the real-time monitoring of human vital signals. This work offers a promising and efficient strategy to overcome the geometric factors limiting the performance of fiber-optic optoelectronic devices.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article