Conductive PEDOT:PSS on surface-functionalized chitosan biopolymers for stretchable skin-like electronics |
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| Affiliation: | 1. Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea;2. Surface Technology Division, Korea Institute of Materials Science (KIMS), Changwon-daero 797, Changwon 51508, Republic of Korea;1. Department of Smart Green Technology Engineering, Pukyong National University, Busan, 48513, South Korea;2. Industry-University Cooperation Foundation, Pukyong National University, Busan, 48513, South Korea;3. Surface Technology Division, Korea Institute of Materials Science (KIMS), Changwon-daero 797, Changwon, 51508, South Korea;4. School of Electrical Engineering, Pukyong National University, Busan, 48513, South Korea;1. Department of Chemical Engineering, Kyungpook National University, Daegu, 702-701, Republic of Korea;2. Department of Chemical Engineering, College of Engineering, Dhofar University, Salalah, Sultanate of Oman;3. Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China;1. School of Materials Science and Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China;2. College of Mechanical and Electrical Engineering, Jiaxing University, Jiaxing 314001, China;3. CSIRO Manufacturing, Private Bag 10, Clayton South, Melbourne 3169, Australia;1. Department of Physics, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia;2. Nanotechnology Research Unit, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia;3. Department of Physics, Ghousia College of Engineering, Ramanagaram, Karnataka, 562 159, India;4. Department of Physics, PES University, Bangalore, Karnataka, 560 100, India;5. Department of Biology, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia;6. Department of Zoology, Bharathiar University, Coimbatore, 641 046, India;7. Department of Physics, Faculty of Education at Al-Mahweet, Sana''s University, Al-Mahweet, Yemen;8. Department of Physics, Faculty of Science, Alexandria University, Egypt;1. Department of Display Engineering, Pukyong National University, Busan 48513, Republic of Korea;2. Flexible Information Device Research Center, Electronics and Telecommunications Research Institute (ETRI), Daejeon 34129, Republic of Korea |
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| Abstract: | Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is a promising alternative transparent electrode to replace conventional indium tix oxide (ITO) for flexible and stretchable electronics. For their applications in optoelectronic devices, realizing both high conductivity and transmittance for the films is of great necessity as a suitable high performance transparent electrode. Here, we demonstrate simultaneously enhanced electrical and optical properties of PEDOT:PSS films prepared on chitosan bio-substrates by using an organic surface modifier, 11-aminoundecanoic acid (11-AA). The sheet resistance of PEDOT:PSS films decreases from 1120.8 to 292.8 Ω/sq with an increase in a transmittance from 75.9 to 80.4% by 11-AA treatment on the chitosan films. The functional groups of 11-AA effectively enhance the adhesion property at the interface between the chitosan substrate and PEDOT:PSS by forming strong interfacial bondings and decrease insulating PSS from PEDOT:PSS films. The wearable heater devices and on-skin sensors based on the 11-AA-treated PEDOT:PSS on the chitosan bio-substrates are successfully fabricated, showing the excellent thermal and sensing performances. The 11-AA surface-modification approach for highly conductive PEDOT:PSS on chitosan bio-substrates presents a great potential for applications toward transparent, flexible and stretchable electronics. |
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| Keywords: | PEDOT:PSS Transparent electrodes Surface modification Wearable devices Organic electronics |
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