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An efficient non-Lambertian organic light-emitting diode using imprinted submicron-size zinc oxide pillar arrays
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1.
1. M. A. Baldo, S. Lamansky, P. E. Burrows, M. E. Thompson, and S. R. Forrest, Appl. Phys. Lett. 75(1 ), 4 (1999).
http://dx.doi.org/10.1063/1.124258
2.
2. V. Bulovic, V. B. Khalfin, G. Gu, P. E. Burrows, D. Z. Garbuzov, and S. R. Forrest, Phys. Rev. B 58(7 ), 3730 (1998).
http://dx.doi.org/10.1103/PhysRevB.58.3730
3.
3. R. Meerheim, M. Furno, S. Hofmann, B. Lussem, and K. Leo, Appl. Phys. Lett. 97(25 ), 253305 (2010).
http://dx.doi.org/10.1063/1.3527936
4.
4. S. Y. Kim and J. J. Kim, Org. Electron. 11(6 ), 1010 (2010).
http://dx.doi.org/10.1016/j.orgel.2010.03.023
5.
5. C. Adachi, M. A. Baldo, M. E. Thompson, and S. R. Forrest, J. Appl. Phys. 90(10 ), 5048 (2001).
http://dx.doi.org/10.1063/1.1409582
6.
6. J. H. Zhou, N. Ai, L. Wang, H. Zheng, C. Luo, Z. X. Jiang, S. F. Yu, Y. Cao, and J. A. Wang, Org. Electron. 12(4 ), 648 (2011).
http://dx.doi.org/10.1016/j.orgel.2011.01.018
7.
7. J. Lim, S. S. Oh, D. Y. Kim, S. H. Cho, I. T. Kim, S. H. Han, H. Takezoe, E. H. Choi, G. S. Cho, Y. H. Seo, S. O. Kang, and B. Park, Opt. Express 14(14 ), 6564 (2006).
http://dx.doi.org/10.1364/OE.14.006564
8.
8. C. J. Yang, S. H. Liu, H. H. Hsieh, C. C. Liu, T. Y. Cho, and C. C. Wu, Appl. Phys. Lett. 91(25 ), 253508 (2007).
http://dx.doi.org/10.1063/1.2827182
9.
9. Y. R. Do, Y. C. Kim, Y. W. Song, C. O. Cho, H. Jeon, Y. J. Lee, S. H. Kim, and Y. H. Lee, Adv. Mater. 15(14 ), 1214 (2003).
http://dx.doi.org/10.1002/adma.200304857
10.
10. K. Ishihara, M. Fujita, I. Matsubara, T. Asano, S. Noda, H. Ohata, A. Hirasawa, H. Nakada, and N. Shimoji, Appl. Phys. Lett. 90(11 ), 111114 (2007).
http://dx.doi.org/10.1063/1.2713237
11.
11. Y. Sun and S. R. Forrest, Nat. Photon. 2(8 ), 483 (2008).
http://dx.doi.org/10.1038/nphoton.2008.132
12.
12. T. W. Koh, J. M. Choi, S. Lee, and S. Yoo, Adv. Mater. 22(16 ), 1849 (2010).
http://dx.doi.org/10.1002/adma.200903375
13.
13. J. Choi, T. W. Koh, S. Lee, and S. Yoo, Appl. Phys. Lett. 100(23 ), 233303 (2012).
http://dx.doi.org/10.1063/1.4724306
14.
14. Y. G. Bi, J. Feng, Y. F. Li, Y. Jin, Y. F. Liu, Q. D. Chen, and H. B. Sun, Appl. Phys. Lett. 100(5 ), 053304 (2012).
http://dx.doi.org/10.1063/1.3680595
15.
15. W. J. Hyun, S. H. Im, O. O. Park, and B. D. Chin, Org. Electron. 13(4 ), 579 (2012).
http://dx.doi.org/10.1016/j.orgel.2012.01.001
16.
16. K. Ishihara, M. Fujita, I. Matsubara, T. Asano, and S. Noda, Jpn. J. Appl. Phys. Part 2 45(4-7 ), L210 (2006).
http://dx.doi.org/10.1143/JJAP.45.L210
17.
17. Q. Y. Yue, W. Li, F. M. Kong, and K. Li, Adv. Mater. Sci. Eng. 2012, 985762 (2012).
http://dx.doi.org/10.1155/2012/985762
18.
18. S. Y. Chou, P. R. Krauss, and P. J. Renstrom, Appl. Phys. Lett. 67(21 ), 3114 (1995).
http://dx.doi.org/10.1063/1.114851
19.
19. M. J. Hampton, S. S. Williams, Z. L. Zhou, J. Nunes, D. H. Ko, J. L. Templeton, J. M. DeSimone, and E. T. Samulski, Proc. SPIE 7047, 70470T (2008).
http://dx.doi.org/10.1117/12.794890
20.
20. Y. J. Lee, S. H. Kim, J. Huh, G. H. Kim, Y. H. Lee, S. H. Cho, Y. C. Kim, and Y. R. Do, Appl. Phys. Lett. 82(21 ), 3779 (2003).
http://dx.doi.org/10.1063/1.1577823
21.
21. S. M. Jeong, F. Araoka, Y. Machida, Y. Takanishi, K. Ishikawa, H. Takezoe, S. Nishimura, and G. Suzaki, Jpn. J. Appl. Phys. 47(6 ), 4566 (2008).
http://dx.doi.org/10.1143/JJAP.47.4566
22.
22. R. L. Pfleegor and L. Mandel, Phys. Rev. 159(5 ), 1084 (1967).
http://dx.doi.org/10.1103/PhysRev.159.1084
23.
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Figures

Image of FIG. 1.

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FIG. 1.

(a) PRINT process used to fabricate ZnO nanopillar array and (b) schematic illustration of the OLED stacks with ZnO nanopillar array at the back side of glass.

Image of FIG. 2.

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FIG. 2.

SEM images of the ZnO nanopillar array with pitch of (a) 400 nm, (b) 500 nm, (c) 650 nm, and (d) 800 nm, respectively.

Image of FIG. 3.

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FIG. 3.

(a) Luminance versus voltage (L–V) and (b) current efficiency versus current density (CE-J). Inset: normalized emission spectrum for reference device and devices with different pitches.

Image of FIG. 4.

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FIG. 4.

(a) Normalized angular distributions of the reference device and device with different pitches. (b) Fitting of the angular distribution. (c) EQE versus current density and (d) power efficiency versus current density. Inset: Diffraction grating with the presence of ZnO nanopillar arrays.

Image of FIG. 5.

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FIG. 5.

Intensity field distribution with propagation of (a) reference OLED, (b) OLED with ZnO nanopillar array. (c) Experimental results of light extraction enhancement ratio with respect to fill factor in comparison with Lumerical FDTD simulation and fitting result using diffraction theory. Inset of (b): zoom-in image of field distribution.

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/content/aip/journal/apl/102/5/10.1063/1.4791786
2013-02-08
2014-04-23

Abstract

We report phosphorescent organic light-emitting diodes with a substantially improved light outcoupling efficiency and a wider angular distribution through applying a layer of zinc oxide periodic nanopillar arrays by pattern replication in non-wetting templates technique. The devices exhibited the peak emission intensity at an emission angle of 40° compared to 0° for reference device using bare ITO-glass. The best device showed a peak luminance efficiency of 95.5 ± 1.5 cd/A at 0° emission (external quantum efficiency—EQE of 38.5 ± 0.1%, power efficiency of 127 ± 1 lm/W), compared to that of the reference device, which has a peak luminance efficiency of 68.0 ± 1.4 cd/A (EQE of 22.0 ± 0.1%, power efficiency of 72 ± 1 lm/W).

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Scitation: An efficient non-Lambertian organic light-emitting diode using imprinted submicron-size zinc oxide pillar arrays
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/5/10.1063/1.4791786
10.1063/1.4791786
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