한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제22권4호
  • /
  • Pages.299-305
  • /
  • 2005
  • /
  • 1225-9098(pISSN)
  • /
  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
권호 표지
DOI QR코드

DOI QR Code

유기 발광체의 에너지 준위 및 전자 상태 연구

A Study on Energy Levels and Electron States of Organic Light-Emitting Materials

  • 김영관 (홍익대학교 기초학과) ;
  • 김영식 (홍익대학교 기초학과) ;
  • 서지훈 (홍익대학교 정보디스플레이학과)
  • 발행 : 2005.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, we designed color of tunable and high efficient organic materials using the quantum dynamics and the semi-empirical calculation, and applied this results to the fabrication of organic light-emitting diodes. Also we optimized the molecular structure of phosphorescent materials and the energy transfer from a host to a dye which makes organic light-emitting diodes improve. Using quantum dynamics method, the molecular structures of ligand only and the whole metal chelate were optimized, and these energy levels were calculated. From this test results, we could understand the emission mechanism of phosphors with various ligands as well as design the proper ligands reducing the T-T annihilation and the carrier lifetime. We also could design ligands with various colors using this test method.

키워드

참고문헌

  1. C. W. Tang and SA Vanslyke, Appl. Phys. Let, 51, 913, (1987) https://doi.org/10.1063/1.98983
  2. M. Era, C. Adachi, T. Tsutsui, and S. Saito, Chem. Phys. Lett., 178, 488, (1991)
  3. M. A. Baldo, D. F. O'Brien, Y. You, A. Shoustikov, S. Sibley, M. R. Thompson, and S. R. Forrest, Nature, 395, 151, (1998)
  4. Z. Shen, P.E. Burrows, V. Bulovic, S.R. Forrest, and M.E. Thompson, Science, 276, 2009 (1997)
  5. M. Yoshida, A Fujii, Y. Ohmori, and K. Yoshino, Jpn. J. Appl. Phys., 35, 1397, (1996) https://doi.org/10.1143/JJAP.35.996
  6. P.E. Burrows, G. Gu, V. Bulovic, Z. Shen, S.R. Forrest, and M.E. Thompson, IEEE Trans. Electron Devices, 44, 1188, (1997)
  7. Y. Sakakibara, S. Okutsu, T. Enokida, and T. Tani, Appl. Phys. Lett., 74, 2587, (1999)
  8. Y. Hamada, H. Kanno, T. Tsujioka, H. Takahashi, and T. Usuki, Appl. Phys. Lett., 75, 1682, (1999)
  9. P.E. Burrows and S.R. Forrest, Appl. Phys. Lett., 76, 2493, (2000)
  10. J.M. Shi and C.W. Tang, Appl. Phys. Lett., 70, 1665, (1997)
  11. V.-E. Choohe, S. Shi, J. Curless, C.L. Shieh, H.C. Lee, F. So, J. Shen, and J. Yang, Appl. Phys. Lett., 75, 172, (1999) https://doi.org/10.1063/1.124309
  12. M. E. Thompson, P. E. Burrows, and S. R. Forrest, Current Option in Solid State and Materials Science, 4, 369, (1999)
  13. H. Hamada, IEEE Trans. Electron Device, 44, 1208, (1998)
  14. H.C. Hamada, C. Adachi, T. Tsutsui, and S. Saito, Jpn. J. Appl. Phys., 31, 1812, (1992)
  15. M. J. Frisch, et al., 'Gaussian 98', revision A.9, Gaunssian, Inc., Pittsburgh, PA, 198
  16. S.-F. Lui, Q. Wu, H.L. Schmider, H. Azia, N.-X. Hu, A.Z. Popovie, and S. Wang, J. Am Chem. Soc., 122, 3671 (2000)