Skip to main content Accessibility help

Effect of NaCl buffer layer on the performance of organic light-emitting devices (OLEDs)

  • S. W. Shi (a1) (a2), D. G. Ma (a2) and J. B. Peng (a1)


The characteristics of organic light-emitting devices based on tris-(8-hydroxyquinoline) aluminum (Alq3) with NaCl thin films inserted at both anode/organic and organic/cathode interfaces are investigated. We optimize the thicknesses of NaCl at both interfaces, and we get the optimal device with the structure of ITO/NaCl(2.0 nm)/N,N'-bis(1-naphthyl)-N,N'-diphenyl-1,1' biphenyl-4,4'-dimaine (NPB)/Alq3/NaCl(2.0 nm)/Al. The device shows much better electroluminescent (EL) performance than that of the as-stated standard device with only LiF buffer layer. The maximal current efficiency and power efficiency is improved by 31% and 67%, the turn-on voltage is also reduced from 4.2 V for the standard device to 3.1 V for our target device. This is due to enhanced electron injection and blocked hole injection, which results in more balanced hole and electron currents.


Corresponding author


Hide All
[1] Tang, C.W., VanSlyke, S.A., Appl. Phys. Lett. 51, 913 (1987)
[2] Tang, C.W., VanSlyke, S.A., Chen, C.H., J. Appl. Phys. 65, 3610 (1989)
[3] Aziz, H., Popovic, Z.D., Hu, N.X., Hor, A.M., Xu, G., Science 283, 1900 (1999)
[4] Jabbour, G.E., Kippelen, B., Armstrong, N.R., Peyghambarian, N., Appl. Phys. Lett. 73, 1185 (1998)
[5] Brown, T.M., Friend, R.H., Millard, I.S., Lacey, D.J., Burroughes, J.H., Cacialli, F., Appl. Phys. Lett. 79, 174 (2001)
[6] Kido, J., Matsumoto, T., Appl. Phys. Lett. 73, 2866 (1998)
[7] Hung, L.S., Tang, C.W., Mason, M.G., Appl. Phys. Lett. 70, 152 (1997)
[8] Lee, J., Park, Y., Lee, S.K., Cho, E.J., Kim, D.Y., Chu, H.Y., Lee, H., Do, L.M., Zyung, T., Appl. Phys. Lett. 80, 3123 (2002)
[9] Lee, J., Park, Y., Kim, D.Y., Chu, H.Y., Lee, H., Do, L.M., Appl. Phys. Lett. 82, 173 (2003)
[10] Kang, S.J., Park, D.S., Kim, S.Y., Whang, C.N., Jeong, K., Im, S., Appl. Phys. Lett. 81, 2581 (2002)
[11] Yi, Y., Kang, S.J., Cho, K., Koo, J.M., Han, K., Park, K., Noh, M., Whang, C.N., Jeong, K., Appl. Phys. Lett. 86, 213502 (2005)
[12] Shi, S.W., Ma, D.G., Semicond. Sci. Technol. 22, 249 (2007)
[13] Aziz, H., Popovic, Z.D., Appl. Phys. Lett. 80, 2180 (2002)
[14] Shi, S.W., Ma, D.G., Semicond. Sci. Technol. 20, 1213 (2005)
[15] Popovic, Z.D., Aziz, H., Tripp, C.P., Hu, N.X., Hor, A.M., Xu, G., SPIE 3476, 68 (1998)
[16] Deng, Z.B., Ding, X.M., Lee, S.T., Gambling, W.A., Appl. Phys. Lett. 74, 2227 (1999)
[17] VanSlyke, S.A., Chen, C.H., Tang, C.W., Appl. Phys. Lett. 69, 2160 (1996)
[18] Zhu, F., Low, B., Zhang, K., Chua, S., Appl. Phys. Lett. 79, 1205 (2001)
[19] Zhao, Y., Liu, S.Y., Hou, J.Y., Thin Solid Films 397, 208 (2001)
[20] Zhao, J.M., Zhang, S.T., Wang, X.J., Zhan, Y.Q., Wang, X.Z., Zhong, G.Y., Wang, Z.J., Ding, X.M., Huang, W., Hou, X.Y., Appl. Phys. Lett. 84, 2913 (2004)
[21] Shi, S.W., Ma, D.G., Appl. Surf. Sci. 252, 6337 (2006)
[22] Hu, Y.F., Shi, S.W., Zhang, Y.G., Zhou, Q.G., Wang, L.X., Ma, D.G., Li, X.L., Thin Solid Films 489, 262 (2005)
[23] Chen, B.J., Sun, X.W., Divayana, Y., Tay, B.K., J. Appl. Phys. 98, 046107 (2005)
[24] Chen, B.J., Sun, X.W., Semicond. Sci. Technol. 20, 801 (2005)


Effect of NaCl buffer layer on the performance of organic light-emitting devices (OLEDs)

  • S. W. Shi (a1) (a2), D. G. Ma (a2) and J. B. Peng (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed