Advanced SearchSearch Tips
Performance Enhancement of Organic Light-emitting Diodes with an Electron-transport Layer of Bathocuproine
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Performance Enhancement of Organic Light-emitting Diodes with an Electron-transport Layer of Bathocuproine
Honga, Jin-Woong; Guo, Yi-Wei; Shin, Jong-Yeol; Kim, Tae Wan;
  PDF(new window)
Performance enhancement of organic light-emitting diodes (OLEDs) is investigated in a device structure of ITO/TPD/Alq3/LiF/Al and ITO/TPD/Alq3/BCP/LiF/Al. Here, bathocuproine (BCP) is used as an electron-transport layer. Current density-voltage-luminance characteristics of the OLEDs show that the performance of the device is better with BCP layer than without BCP layer. The current density, luminance, luminous efficiency, and external-quantum efficiency are improved by approximately 22%, 50%, 2%, and 18%, respectively. Since the BCP layer lowers the electron energy barrier, electron transport is facilitated and the movement of hole is blocked as the applied voltage increases. This results in an increased recombination rate of holes and electrons.
Organic light-emitting diodes;BCP (bathocuproine);Recombination rate;Current density;Luminance;Luminous efficiency;External-quantum efficiency;
 Cited by
Y. Ohmori, A. Fujii, M. Uchida, and K. Yoshino, Appl. Phys. Lett., 62, 3250 (1993). [DOI:] crossref(new window)

C. Hosokawa, H. Higashi, and T. Kusumoto, Appl. Phys. Lett., 62, 3238 (1993). [DOI:] crossref(new window)

Z. L. Zhang, X. Y Jiang, X. H. Xu, T. Nagatomo, and O. Omoto, Synth. Met., 91, 131 (1997). [DOI:] crossref(new window)

P. S. Vincett, W. A. Barlow, R. A. Hann, and G. G. Roberts, Thin Solid Films, 94, 171 (1982). [DOI:] crossref(new window)

M. Pope, H. Kallmann, and P. Magnante, J. Chem. Phys., 38, 2042 (1963). [DOI:] crossref(new window)

W. Helfrich and W. G. Schneider, Phys. Rev. Lett., 140, 229 (1965). [DOI:] crossref(new window)

C. W. Tang and S. A. VanSlyke, Appl. Phys. Lett., 51, 913 (1987). [DOI:] crossref(new window)

C. W. Tang and S. A. Vanslyke, J. Appl. Phys., 65, 3610 (1989). [DOI:] crossref(new window)

J. H. Burroughes, D. C. Bradley, A. R. Brown, R. N. Marks, K. Mackay, R. H. Friend, P. I. Burn, and A. B. Holmes, Nature, 347, 539 (1990). [DOI:] crossref(new window)

A. Dodabalapur, Solid State Communications, 102, 259 (1997). [DOI:] crossref(new window)

S. Roy, S. Kunndu, S. K. Roy, and A. J. Pal, Materials Chemistry and Physics, 77, 784 2002. [DOI:] crossref(new window)

Y. H. Lee, W. J. Kim, K. S. Cho, J. Y. Lee, T. W. Kim, and J. W. Hong, Jour. of the Korean Physical Society, 53, 1460 (2008). [DOI:] crossref(new window)

J. Pospisil, J. Honskus, J. Fahnrich, P. Hlidek, and P. Toman, Journal of Luminescence, 72, 522 (1997). [DOI:] crossref(new window)

K. Narayan, S. Varadharajaperumal, G. Mohan Rao, M. Manoj Varma, and T. Srinivas, Curr. Appl. Phys., 13, 18 (2013). [DOI:] crossref(new window)

H. Isii, Device Physics, Material Chemistry, and Device Application of Organic Light Emittting Diodes, Popular Ed. (CMC Publishing, 2012) p. 13.