Highly transparent organic light-emitting diodes with a metallic top electrode: The dual role of a Cs2CO3 layer

Optics Express

Volumn 19, Issue 2, 2011, Pages 1113-1121

  Cho, Hyunsu ^a   Choi, Jung Min ^a   Yoo, Seunghyup ^a  

^a Korea Advanced Institute of Science and Technology (KAIST)   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

CESIUM; ELECTRIC RESISTANCE; ELECTRODES; LIGHT EMISSION; LIGHT EMITTING DIODES; ORGANIC LIGHT EMITTING DIODES (OLED); ZINC SULFIDE;

CAPPING LAYER; DAMAGE-FREE; DUAL ROLE; ELECTRON-INJECTION PROPERTY; HIGH TRANSMITTANCE; PEAK TRANSMITTANCE; TRANSPARENT ORGANIC LIGHT-EMITTING DIODES; TURN ON VOLTAGE; ULTRA-THIN;

SILVER;

CARBONIC ACID DERIVATIVE; CESIUM; CESIUM CARBONATE; SULFIDE; ZINC DERIVATIVE; ZINC SULFIDE;

ARTICLE; CHEMISTRY; ELECTRODE; EQUIPMENT; EQUIPMENT DESIGN; ILLUMINATION; INSTRUMENTATION; SEMICONDUCTOR;

CARBONATES; CESIUM; ELECTRODES; EQUIPMENT DESIGN; EQUIPMENT FAILURE ANALYSIS; LIGHTING; SEMICONDUCTORS; SULFIDES; ZINC COMPOUNDS;

EID: 78751494664     PISSN: None     EISSN: 10944087     Source Type: Journal    
DOI: 10.1364/OE.19.001113     Document Type: Article

References (27)

1. G. Gu, V. Bulovic, P. E. Burrows, S. R. Forrest, and M. E. Thompson, "Transparent organic light emitting devices," Appl. Phys. Lett. 68(19), 2606-2608 (1996).
2. G. Parthasarathy, P. E. Burrows, V. Khalfin, V. G. Kozlov, and S. R. Forrest, "A metal-free cathode for organic semiconductor devices," Appl. Phys. Lett. 72(17), 2138-2140 (1998).
3. A. Yamamori, S. Hayashi, T. Koyama, and Y. Taniguchi, "Transparent organic light-emitting diodes using metal acethylacetonate complex as an electron injective buffer layer," Appl. Phys. Lett. 78(21), 3343-3345 (2001). (Pubitemid 33611559)
4. H.-K. Kim, K.-S. Lee, and J. H. Kwon, "Transparent indium zinc oxide top cathode prepared by plasma damage-free sputtering for top-emitting organic light-emitting diodes," Appl. Phys. Lett. 88(1), 012103 (2006).
5. S. Y. Ryu, S. H. Choi, J. T. Kim, C. S. Kim, H. K. Baik, and H. S. Jeong, "Highly efficient transparent organic light-emitting diodes by ion beam assisted deposition-prepared indium tin oxide cathode," Appl. Phys. Lett. 90(3), 033513 (2007).
6. R. B. Pode, C. J. Lee, D. G. Moon, and J. I. Han, "Transparent conducting metal electrode for top emission organic light-emitting devices: Ca-Ag double layer," Appl. Phys. Lett. 84(23), 4614-4616 (2004).
7. Z. Xie, L.-S. Hung, and F. Zhu, "A flexible top-emitting organic light-emitting diode on steel foil," Chem. Phys. Lett. 381(5-6), 691-696 (2003).
8. S. Kim, K. Hong, K. Kim, I. Lee, K.-B. Kim, D. Y. Lee, T.-Y. Kim, and J.-L. Lee, "Hole injection layer of thermally evaporated copper oxide for top emitting organic light emitting diodes," J. Electrochem. Soc. 157(10), J347-J350 (2010).
9. D.-D. Zhang, J. Feng, Y.-Q. Zhong, Y.-F. Liu, H. Wang, Y. Jin, Y. Bai, Q.-D. Chen, and H.-B. Sun, "Efficient top-emitting organic light-emitting devices using Fe3O4 modified Ag anode," Org. Electron. 11(12), 1891-1895 (2010).
10. B. J. Chen, X. W. Sun, and S. C. Tan, "Transparent organic light-emitting devices with LiF/Mg:Ag cathode," Opt. Express 13(3), 937-941 (2005).
11. T. Zhang, L. Zhang, W. Ji, and W. Xie, "Transparent white organic light-emitting devices with a LiF/Yb:Ag cathode," Opt. Lett. 34(8), 1174-1176 (2009).
12. H. Riel, S. Karg, T. Beierlein, B. Ruhstaller, and W. Rieß, "Phosphorescent top-emitting organic light-emitting devices with improved light outcoupling," Appl. Phys. Lett. 82(3), 466-468 (2003).
13. T.-W. Koh, J.-M. Choi, S. Lee, and S. Yoo, "Optical outcoupling enhancement in organic light-emitting diodes: highly conductive polymer as a low-index layer on microstructured ITO electrodes," Adv. Mater. 22(16), 1849-1853 (2010).
14. T. Hasegawa, S. Miura, T. Moriyama, T. Kimura, I. Takaya, Y. Osato, and H. Mizutani, "Novel electron-injection layer for top-emission OLEDs," SID Int. Symp. Digest Tech. Papers 35(1), 154-157 (2004).
15. G. Li, C.-W. Chu, V. Shrotriya, J. Huang, and Y. Yang, "Efficient inverted polymer solar cells," Appl. Phys. Lett. 88(25), 253503 (2006).
16. D. Poitras, C.-C. Kuo, and C. Py, "Design of high-contrast OLEDs with microcavity effect," Opt. Express 16(11), 8003-8015 (2008).
17. X. Liu, X. Cai, J. Qiao, J. Mao, and N. Jiang, "The design of ZnS/ Ag/ ZnS transparent conducive multilayer films," Thin Solid Films 441(1-2), 200-206 (2003).
18. B. P. Rand, P. Peumans, and S. R. Forrest, "Long-range absorption enhancement in organic tandem thin-film solar cells containing silver nanocluster," J. Appl. Phys. 96(12), 7519-7526 (2004).
19. N. Kaiser, "Review of the fundamentals of thin-film growth," Appl. Opt. 41(16), 3053-3060 (2002).
20. H. Cho, C. Yun, and S. Yoo, "Multilayer transparent electrode for organic light-emitting diodes: tuning its optical characteristics," Opt. Express 18(4), 3404-3414 (2010).
21. B. O'Connor, C. Haughn, K.-H. An, K. P. Pipe, and M. Shtein, "Transparent and conductive electrodes based on unpatterned, thin metal films," Appl. Phys. Lett. 93(22), 223304 (2008).
22. S. Chen, Z. Jie, Z. Zhao, G. Cheng, Z. Wu, Y. Zhao, B. Quan, S. Liu, X. Li, and W. Xie, "Improved light outcoupling for top-emitting organic light emitting devices," Appl. Phys. Lett. 89(4), 043505 (2006).
23. H. A. Macleod, Thin-film optical filters (Taylor & Francis, 2001).
24. J. Meiss, M. K. Riede, and K. Leo, "Optimizing the morphology of metal multilayer films for indium tin oxide(ITO)-free inverted organic solar cells," J. Appl. Phys. 105(6), 063108 (2009).
25. C.-I. Wu, C.-T. Lin, Y.-H. Chen, M.-H. Chen, Y.-J. Lu, and C.-C. Wu, "Electronic structures and electron-injection mechanisms of cesium-carbonate-incorporated cathode structures for organic light-emitting devices," Appl. Phys. Lett. 88(15), 152104 (2006).
26. J. Huang, Z. Xu, and Y. Yang, "Low-work-function surface formed by solution-processed and thermally deposited nanoscale layers of cesium carbonate," Adv. Funct. Mater. 17(12), 1966-1973 (2007).
27. D. Han, H. Kim, S. Lee, M. Seo, and S. Yoo, "Realization of efficient semitransparent organic photovoltaic cells with metallic top electrodes: utilizing the tunable absorption asymmetry," Opt. Express 18(S4), A513-A521 (2010).