저분자 유기 광다이오드 소자의 p형 유기물 두께에 따른 전류 특성에 관한 연구

A Study on the Thickness Dependence of p-type Organic Layer on the Current of Small Molecule-based Organic Photodiode

  • 김영우 (가천대학교 전자공학과) ;
  • 이동운 (가천대학교 전자공학과) ;
  • 전용민 (가천대학교 의공학과) ;
  • 조의식 (가천대학교 전자공학과) ;
  • 권상직 (가천대학교 전자공학과)
  • Young Woo Kim (Department of Electronics Engineering, Gachon University) ;
  • Dong Woon Lee (Department of Electronics 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 : 2023.09.07
  • 심사 : 2023.09.19
  • 발행 : 2023.09.30

초록

Organic photo Diodes (OPDi) give multiple advantages in the growing interest of the flexible optoelectronic devices. Organic semiconductors are freeform as they can deposit on any substrate, so it could be flexible. But the inorganic material photodiodes (PDs) are usually fabricated on silicon wafers which are solid. So, normally PDs are inflexible. By those reasons, we decided to make the vacuum deposited small molecule OPDi. We have investigated the OPDi's J-V characteristic by changing the thickness of p-type layer of OPDi. This device consists of indium-tin-oxide (ITO) / 2,3:6,7-dibenzanthracene (pentacene) / buckminsterfullerene (C60) / aluminum (Al). Its J-V characteristics were measured in the probe station(4156C) that can give dark condition while measuring. And for the luminance characteristics, the photocurrent was measured with the bright halogen lamp and a probe station.

키워드

과제정보

본 성과는 정부(과학기술정보통신부)의 재원으로 한국 연구 재단의 지원을 받아 수행된 연구임(No. NRF-2022R1A2C1 003076). 본 성과는 또한 2022년도 정부(산업통상자원부)의 재원으로 한국산업기술진흥원(KIAT)의 지원을 받아 수행된 연구임 (No. P001245, 2022년 산업혁신인재성장지원사업).

참고문헌

  1. Chow, P.C.Y.; and Someya, T., "Organic Photodetectors for Next-Generation Wearable Electronics" Advanced Materials, Vol. 32(15), pp. 1902045, 2020.
  2. Xu, X.; Zhao, Y.; and Liu, Y., "Wearable Electronics Based on Stretchable Organic Semiconductors." Small, Vol. 19(20), pp. 2206309., 2023.
  3. Si-Hyoung, K., Chang-Man, K., Ki-Chang, N., and Kwang-Soup, S., "Analysis of the photocurrent depending on the electromagnetic radiation on the amorphous selenium surface" The Institude of Electronics Engineers of Korea, Vol. 35, pp. 1451-1454., 2012.
  4. Shockley W., and W.T. Read., "Statistics of the Recombination of Holes and Electrons", Physical Review., Vol.87, pp. 835-842., 1952. https://doi.org/10.1103/PhysRev.87.835
  5. Wilken, S., Sandberg, O. J., Scheunemann, D., and Osterbacka, R. "Watching Space Charge Build Up in an Organic Solar Cell." Solar RRL, Vol. 4(3), pp.1900505., 2020.
  6. Tang, C. W., "Two-layer organic photovoltaic cell." Applied Physics Letters, Vol. 48(2), pp. 183-185., 1986. https://doi.org/10.1063/1.96937
  7. Li Y, Chen H, and Zhang J., "Carrier Blocking Layer Materials and Application in Organic Photodetectors." Nanomaterials., Vol. 11(6), pp. 1404., 2021.
  8. Matsushima, T., Bencheikh, F., Komino, T., Leyden, M. R., Sandanayaka, A. S. D., Qin, C., and Adachi, C. "High performance from extraordinarily thick organic light-emitting diodes." Nature., Vol.572(7770), pp. 502-506., 2019. https://doi.org/10.1038/s41586-019-1435-5
  9. Yoon-Heung, T., Ki-Beom, K., Hyoung-Guen P., Kwang-Ho, L., and Jong-Ram, L., "Criteria for ITO (indium-tin-oxide) thin film as the bottom electrode of an organic light emitting diode" Thin Soild Flims., Vol.517(15), pp. 4490-4490., 2019.
  10. Ki-Hun O., Jiwan K., So-Ra P., Youngmin K., Chan-Jae L., Sung-Jei H., Min-Gi K., Namsu K., Chul Jong H., and Jong-Woong K., "Ultra-thin and smooth transparent electrode for flexible and leakage-free organic light-emitting diodes" Scientific Reports., Vol.5, pp. 9464., 2015.
  11. Mehdi D.; Raphael C., Bruno F,; Lionel H,. "Physics of trap assisted photomultiplication in vertical organic photoresistors" Journal of Applied Physics., Vol. 127, pp. 055502., 2020.
  12. Giulio S., Matthew J. D., Stefan C. J. ., Rene A. J. J., Gerwin H. G., "Organic Photodetectors and their Application in Large Area and Flexible Image Sensors: The Role of Dark Current" Advanced Funtional Materials., Vol. 30, pp. 1904205., 2020.