반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
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진공 증착 투명 OLED 투과도 및 발광 특성 개선을 위한 Mesh 전극 연구

A Study on Vacuum-deposited Transparent OLED to Improve Its Transmittance and Luminescence Characteristics with a Mesh Electrode

  • 김영우 (가천대학교 반도체공학과) ;
  • 전용민 (가천대학교 의공학과) ;
  • 조의식 (가천대학교 전자공학과) ;
  • 권상직 (가천대학교 전자공학과)
  • Young Woo Kim (Department of Semiconductor Engineering, Gachon University) ;
  • Yongmin Jeon (Department of Medical Biomedical Engineering, Gachon University) ;
  • Eou-Sik Cho (Department of Electronics Engineering, Gachon University ) ;
  • Sang Jik Kwon (Department of Electronics Engineering, Gachon University )
  • 투고 : 2024.05.31
  • 심사 : 2024.06.21
  • 발행 : 2024.06.30
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초록

With the growing field and growing interest in transparent organic light-emitting diodes (TOLED) in the industry, various attempts are being made to improve the transmittance and performance of TOLED. TOLEDs are expected to be used in next-generation displays such as mixture reality (MR) displays, displayable windows, televisions, etc. This study presents a mesh TOLED with better transmittance and luminescence characteristics than existing TOLEDs through an in-situ vacuum deposition method that does not require additional processes such as photolithography and etching. In this study the mesh TOLED's cathode consists of Mg: Ag 1:9 electrode. Mesh patterns are interconnected with a 6 nm layer of interlayer. We approached transmittance improvement up to 30% at 555 nm at the cathode electrode with similar current injection character, also we improved lumination characteristics up to 23% at 7 V driving condition.

키워드

과제정보

본 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. NRF-2022R1A2C1003076).

참고문헌

  1. Y. Jeon, H.-R. Choi, J. H. Kwon, S. Choi, K. M. Nam, K.-C. Park and K. C. Choi, "Sandwich-structure transferable free-form OLEDs for wearable and disposable skin wound photomedicine," Light: Science & Applications, vol. 8, no. 1, pp. 114, 2019. 
  2. J. Tae Lim, H. Lee, H. Cho, B.-H. Kwon, N. Sung Cho, B. Kuk Lee, J. Park, J. Kim, J.-H. Han, J.-H. Yang, B.-G. Yu, C.-S. Hwang, S. Chu Lim and J.-I. Lee, "Flexion bonding transfer of multilayered graphene as a top electrode in transparent organic light-emitting diodes," Scientific Reports, vol. 5, no. 1, pp. 17748, 2015. 
  3. M. Zhang, S. Hofle, J. Czolk, A. Mertens and A. Colsmann, "All-solution processed transparent organic light emitting diodes," Nanoscale, vol. 7, no. 47, pp. 20009-20014, 2015. 
  4. K. S. Yook, S. O. Jeon, C. W. Joo and J. Y. Lee, "Transparent organic light emitting diodes using a multilayer oxide as a low resistance transparent cathode," Applied Physics Letters, vol. 93, no. 1, 2008. 
  5. H. Chae, Y. Park, Y. Jo, Y. Jeon, H. J. Lee, S. Yoo and K. C. Choi, "Blue Transparent OLEDs with High Stability and Transmittance for Modulating Sleep Disorders," Advanced Materials Interfaces, vol. 10, no. 11, pp. 2202443, 2023. 
  6. H. L. Hortensius, E. F. C. Driessen, T. M. Klapwijk, K. K. Berggren and J. R. Clem, "Critical-current reduction in thin superconducting wires due to current crowding," Applied Physics Letters, vol. 100, no. 18, 2012. 
  7. A. V. Zinovchuk, O. Y. Malyutenko, V. K. Malyutenko, A. D. Podoltsev and A. A. Vilisov, "The effect of current crowding on the heat and light pattern in high-power AlGaAs light emitting diodes," Journal of Applied Physics, vol. 104, no. 3, 2008. 
  8. I. Y. Evstratov, V. F. Mymrin, S. Y. Karpov and Y. N. Makarov, "Current crowding effects on blue LED operation," physica status solidi c, vol. 3, no. 6, pp. 1645-1648, 2006. 
  9. J. Greener, K. C. Ng, K. M. Vaeth and T. M. Smith, "Moisture permeability through multilayered barrier films as applied to flexible OLED display," Journal of Applied Polymer Science, vol. 106, no. 5, pp. 3534-3542, 2007. 
  10. D. Lee, E.-S. Cho, Y. Jeon and S. J. Kwon, "Characterization of the material and electrical properties depending on the Mg:Ag ratio as a cathode for TEOLED," Materials Chemistry and Physics, vol. 303, pp. 127742, 2023.