실크 스크린 프린팅 기법을 적용한 용액 기반의 탄소나노튜브와 은 나노 와이어 코팅 기술 개발 Development of Solution-based Carbon Nanotube and Silver Nanowire Coating Technology using Silk Printing Technique원문보기
나노 크기의 물질은 여러 기판에 코팅이 가능하며, 이 소재는 투명하며, 전도성이 있기 때문에 전자소자의 투명전극이나 전원 공급용 전극으로 활용이 가능하다. 본 연구에서는 CNT와 Ag 나노와이어를 실크스크린 기법을 이용하여 반복적으로 코팅하였으며, 5번까지 형성한 샘플을 제작하여, 광학 및 전기 특성을 측정하고, 분석하였다. 실크스크린 코팅된 샘플 표면은 코팅 방향에 의한 자국이 형성되었음을 확인하였으며, 코팅한 횟수에 따른 투과도 및 표면 저항의 경향성을 조사하였다. 코팅 횟수가 늘어남에 따라 투과도 및 표면 저항은 감소하는 경향을 나타내었다. 특히 투과도의 경우 2번과 5번에서 변화폭이 컸으며, 이러한 변화는 Ag 나노와이어 코팅에 의한 것으로 확인되었다. 또한, 700nm를 기점으로 이전 파장 영역에서는 파장에 따라 증가하는 반면 이상에서는 감소하는 경향을 보였다. 표면 저항은 1번 코팅했을 때 9Ω/cm2 에서 5번 코팅을 진행하였을 때 0.856Ω/cm2 으로 낮아졌다. 투과도와 유사하게 Ag에 의하여 저항값이 영향을 받는다는 것을 알 수 있었다. 향후 Ag 나노와이어의 Ag 농도 및 다른 방법으로 코팅하여 투명도가 높은 CNT와의 융합을 통하여 원하는 투명 전극을 구현하여 전자소자에 적용할 필요가 있다.
나노 크기의 물질은 여러 기판에 코팅이 가능하며, 이 소재는 투명하며, 전도성이 있기 때문에 전자소자의 투명전극이나 전원 공급용 전극으로 활용이 가능하다. 본 연구에서는 CNT와 Ag 나노와이어를 실크스크린 기법을 이용하여 반복적으로 코팅하였으며, 5번까지 형성한 샘플을 제작하여, 광학 및 전기 특성을 측정하고, 분석하였다. 실크스크린 코팅된 샘플 표면은 코팅 방향에 의한 자국이 형성되었음을 확인하였으며, 코팅한 횟수에 따른 투과도 및 표면 저항의 경향성을 조사하였다. 코팅 횟수가 늘어남에 따라 투과도 및 표면 저항은 감소하는 경향을 나타내었다. 특히 투과도의 경우 2번과 5번에서 변화폭이 컸으며, 이러한 변화는 Ag 나노와이어 코팅에 의한 것으로 확인되었다. 또한, 700nm를 기점으로 이전 파장 영역에서는 파장에 따라 증가하는 반면 이상에서는 감소하는 경향을 보였다. 표면 저항은 1번 코팅했을 때 9Ω/cm2 에서 5번 코팅을 진행하였을 때 0.856Ω/cm2 으로 낮아졌다. 투과도와 유사하게 Ag에 의하여 저항값이 영향을 받는다는 것을 알 수 있었다. 향후 Ag 나노와이어의 Ag 농도 및 다른 방법으로 코팅하여 투명도가 높은 CNT와의 융합을 통하여 원하는 투명 전극을 구현하여 전자소자에 적용할 필요가 있다.
Nano-sized materials can be coated on various substrates, and since this material is transparent and conductive, it can be used as a transparent electrode for electronic devices or an electrode for power supply. In this study, CNT and Ag nanowires were repeatedly coated using the silk screen techniq...
Nano-sized materials can be coated on various substrates, and since this material is transparent and conductive, it can be used as a transparent electrode for electronic devices or an electrode for power supply. In this study, CNT and Ag nanowires were repeatedly coated using the silk screen technique, and samples formed up to 5 times were fabricated, and their optical and electrical properties were measured and analyzed. It was confirmed that marks were formed on the surface of the silkscreen-coated sample according to the coating direction, and the trend of transmittance and surface resistance according to the number of times of coating was investigated. As the number of coatings increased, transmittance and surface resistance tended to decrease. In particular, in the case of transmittance, the range of change was large in the samples coated 2 and 5 times. These changes were confirmed by the Ag nanowire coating. In addition, starting from 700 nm, the previous wavelength region increased according to the wavelength, while the above showed a tendency to decrease. The surface resistance was lowered from 9Ω/cm2 when coating once to 0.856Ω/cm2 when coating five times. It was found that the resistance value was affected by Ag similarly to the permeability. In the future, it is necessary to realize a desired transparent electrode through Ag concentration and coating of Ag nanowires with other methods and fusion with highly transparent CNT to apply to electronic devices.
Nano-sized materials can be coated on various substrates, and since this material is transparent and conductive, it can be used as a transparent electrode for electronic devices or an electrode for power supply. In this study, CNT and Ag nanowires were repeatedly coated using the silk screen technique, and samples formed up to 5 times were fabricated, and their optical and electrical properties were measured and analyzed. It was confirmed that marks were formed on the surface of the silkscreen-coated sample according to the coating direction, and the trend of transmittance and surface resistance according to the number of times of coating was investigated. As the number of coatings increased, transmittance and surface resistance tended to decrease. In particular, in the case of transmittance, the range of change was large in the samples coated 2 and 5 times. These changes were confirmed by the Ag nanowire coating. In addition, starting from 700 nm, the previous wavelength region increased according to the wavelength, while the above showed a tendency to decrease. The surface resistance was lowered from 9Ω/cm2 when coating once to 0.856Ω/cm2 when coating five times. It was found that the resistance value was affected by Ag similarly to the permeability. In the future, it is necessary to realize a desired transparent electrode through Ag concentration and coating of Ag nanowires with other methods and fusion with highly transparent CNT to apply to electronic devices.
J. W. Kim & T. H. Kim (2013). Liquid Crystal？Modes for Display Applications. Korean Journal？of Optics and Photonics, 24(4), 168-175.？DOI : 10.3807/KJOP.2013.24.4.168
L. J. Kim, S. J. Jung, H. J. Kim, B. H. Kim, K. J.？Kwon, Y. M. Ha & H. J. Kim (2022). Image？quality enhancement in variable-refresh-rate？AMOLED displays using a variable initial voltage？compensation scheme. Scientific Reports, 12,？5977. DOI : 10.1038/s41598-022-09892-5
K. B. Kim, J. P. Lee, M. J. Kim & Y. S. Min？(2019). Characteristics of Excimer Laser-Annealed？Polycrystalline Silicon on Polymer layers. Journal？of Convergence for Information Technology,？9(3), 75-81.？DOI : 10.22156/CS4SMB.2019.9.3.075
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M. J. Kim & G. H. Jin (2009). ITO/AlNdN/Al？contact process for active matrix OLED displays.？Electronics Letters, 45(8), 421-423.？DOI : 10.1049/el.2009.0037
N. Ren, J. Zhu & S. Ban (2017). Electrical？Properties of ITO/Ag/ITO Conducting Transparent？Thin Films. AIP ADVANCES, 7(5), 055009-1-055009-7. DOI : 10.1063/1.4982919
K. B. Kim, J. P. Lee & M. J. Kim (2020). Optical？and electrical properties of AZO thin films？deposited on OHP films. Journal of Convergence？for Information Technology, 10(9), 28-34.？DOI : 10.22156/CS4SMB.2020.10.09.028
H. Khachatryan, K. B. Kim, & M. J. Kim (2020).？Fabrication of Flexible Carbon Nanotube？Network on Paper Substrate: Effect of Post？Treatment Temperature on Electrodes. Journal？of Nanoelectronics and Optoelectronics, 15,？1442-1449. DOI : 10.1166/jno.2020.2896
K. B. Kim, J. P. Lee & M. J. Kim (2022).？Development of CNT Coating Process using？Argon Atmospheric Plasma. Journal of Industrial？Convergence, 20(10), 33-38.？DOI : 10.22678/JIC.2022.20.10.033
M. J. Kim. (2022). Fabrication of an Oxide-based Optical Sensor on a Stretchable Substrate.？Journal of Industrial Convergence, 20(12), 79-85. DOI : 10.22678/JIC.2022.20.12.079
K. B. Kim (2023). Effects of Brush Coating of Ag？Nanowire Solution and Annealing using Plasma？Process for Flexible Electronic Devices. Journal？of Industrial Convergence, 21(3), 189-194.？DOI : 10.22678/JIC.2023.21.3.189？
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