Polímeros: Ciência e Tecnologia
https://revistapolimeros.org.br/article/doi/10.1590/0104-1428.2257
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Low cost UV-Ozone reactor mounted for treatment of electrode anodes used in P-OLEDs devices

Santos, Emerson Roberto; Moraes, José Igor Balbino de; Takahashi, Christine Miwa; Sonnenberg, Victor; Burini, Elvo Calixto; Yoshida, Satoru; Takimoto, Herick Garcia; Onmori, Roberto Koji; Hui, Wang Shu

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Abstract

Low cost UV-Ozone reactor using a high pressure mercury vapor lamp of 80 watts without outer bulb showed good results for treatment of ITO films used as anode electrode in the assembly of P-OLED (polymer-organic light emitting diode) devices. This study revealed 20 minutes as effective treatment time and it was verified also that the effect of UV-Ozone treatment loses its efficiency as the elapsed time increases. It was analyzed with measurements of contact angle using a droplet of PEDOT:PSS polymer. P-OLEDs devices were mounted with architecture: ITO/PEDOT:PSS/PVK/Alq3/Al. The PVK polymer was diluted in organic solvent of 1,2,4-trichlorobenzene with concentrations of: 5, 10, 20 and 30 mg/mL. Results revealed better performance of P-OLED devices for concentration of 5 mg/mL resulting in lower threshold voltage, elevation of electrical current and similar diode curve.

Keywords

ITO film, PVK, P-OLED, HPMVL, UV-Ozone.

References

1. Santos, E. R., Correia, F. C., Burini, E. C., Jr., Onmori, R. K., Fonseca, F. J., Andrade, A. M., & Wang, S. H. (2012). Influence of the transparent conductive oxides on the P-OLEDs behavior. ECS Transactions, 49(1), 347-354. http://dx.doi.org/10.1149/04901.0347ecst.

2. Santos, E. R., Burini, E. C., & Wang, S. H. (2012). UV-ozone generation from modified high intensity discharge mercury vapor lamps for treatment of indium tin oxide films. Ozone Science and Engineering, 34(2), 129-135. http://dx.doi.org/10.1080/01919512.2011.649132.

3. He, P., Wang, S. D., Wong, W. K., Cheng, L. F., Lee, C. S., Lee, S. T., & Liu, S. Y. (2003). Vibrational analysis of oxygen-plasma treated indium tin oxide. Chemical Physics Letters, 370(5-6), 795-798. http://dx.doi.org/10.1016/S0009-2614(03)00177-5.

4. Damlin, P., Östergård, T., Ivaska, A., & Stubb, H. (1999). Light-emitting diodes of poly(p-phenylene vinylene) films electrochemically polymerized by cyclic voltammetry on ITO. Synthetic Metals, 102(1-3), 947-948. http://dx.doi.org/10.1016/S0379-6779(98)00971-0.

5. Sugiyama, K., Ishii, H., Ouchi, Y., & Seki, K. (2000). Dependence of indium–tin–oxide work function on surface cleaning method as studied by ultraviolet and x-ray photoemission spectroscopies. Journal of Applied Physics, 87(1), 295-298. http://dx.doi.org/10.1063/1.371859.

6. Iwama, Y., Cho, D. C., Mori, T., & Mizutani, T. (2003). Electroluminescence properties of organic light-emitting diodes using ITO with different surface treatments. In Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials (pp. 718-721). Nagoya: IEEE.

7. Emerson, R. S., Tunísia, E. S., Wang, S. H., Elvo, C. B. J., Marcia, A. Y., Maria, D. P. H. F., Fernando, J. F., & Adnei, M. A. (2008). UV-Ozone treatment on ITO using modified high-pressure mercury vapor lamp for assembly of polymeric devices with RBPV-DODMPPV. In Proceedings of the 6th Ibero-American Congress on Sensors (Ibersensor 2008) (pp. IB08-112). São Paulo: USP.

8. Santos, E. R., Correia, F. C., Wang, S. H., Hidalgo, P., Fonseca, F. J., Burini, E. C., Fo., & Andrade, A. M. (2010). Reator de UV-Ozônio com lâmpada a vapor de mercúrio a alta pressão modificada para tratamento superficial de óxidos transparentes condutivos utilizados em dispositivos poliméricos eletroluminescentes. Química Nova, 33(8), 1779-1783. http://dx.doi.org/10.1590/S0100-40422010000800027.

9. Santos, E. R., Wang, S. H., Correia, F. C., Costa, I. R., Sonnenberg, V., Burini, E. C., Jr., & Onmori, R. K. (2014). Influência de diferentes solventes utilizados na deposição de filme de poli(9-vinilcarbazol) em dispositivos OLEDs. Química Nova, 37(1), 1-5. http://dx.doi.org/10.1590/S0100-40422014000100001.

10. Emerson, R. S., Satoru, Y., Elvo, C. B. J., Roberto, K. O., & Wang, S. H. (2013). Comparação de diferentes eletrodos anodos utilizados em dispositivos OLEDs flexíveis. Lumière, 186(15), 54-72.

11. Emerson, R. S., Elvo, C. B. J., & Fernando, J. F. (2009). Aquaregia and oxygen plasma treatments on fluorinated tin oxide for assembly of pleds devices using OC1C10-PPV as emissive polymer. Sensors & Transducers Journal, 101(2), 22-30.

12. Emerson, R. S., Fábio, C. C., Elvo, C. B. J., Shu, H. W., Marcia, A. Y., Pilar, H., Fernando, J. F., & Adnei, M. A. (2009). New copolymers containing charge carriers for organic devices with ITO films treated by uv-ozone using high intensity discharge lamp. Sensors & Transducers Journal, 101(2), 12-21.

13. Emerson, R. S. (2009). Estudo de tratamentos superficiais em substratos de óxidos transparentes condutivos para a aplicação de dispositivos poliméricos eletroluminescentes (Doctoral thesis). Escola Politécnica de Engenharia Elétrica, Universidade de São Paulo, São Paulo.

14. Kitao, M., Komatsu, M., Hoshika, Y., Yazaki, K., Yoshimura, K., Fujii, S., Miyama, T., & Kominami, Y. (2014). Seasonal ozone uptake by a warm-temperate mixed deciduous and evergreen broadleaf forest in western Japan estimated by the Penmane-Monteith approach combined with a photosynthesis dependent stomatal model. Environmental Pollution, 184, 457-463. http://dx.doi.org/10.1016/j.envpol.2013.09.023. PMid:24121421.

15. Luzchem Research Inc. (2015). Luzchem Spectroradiometer SPR-03 Specs. Ottawa. Retrieved in 16 May 2015, from http://www.luzchem.com/products/spectroradiometer.php

16. Vendrami, J. A., Elvo, C. B. J., Wang, S. H., & Emerson, R. S. (2013). Medição de ângulo de contato com webcam. In Anais do 15° Simpósio de Iniciação Científica (pp. 48). São Paulo: Faculdade de Tecnologia de São Paulo.

17. You, Z. Z., & Dong, J. Y. (2006). Effect of oxygen plasma treatment on the surface properties of tin-doped indium oxide substrates for polymer LEDs. Journal of Colloid and Interface Science, 300(2), 697-703. PMid:16643943.

18. Davenas, J., Besbes, S., Abderrahmen, A., Jaffrezic, N., & Ben Ouada, H. (2008). Surface characterisation and functionalisation of indium tin oxide anodes for improvement of charge injection in organic light emitting diodes. Thin Solid Films, 516(7), 1341-1344. http://dx.doi.org/10.1016/j.tsf.2007.03.163.

19. Sugiyama, K., Ishii, H., Ouchi, Y., & Seki, K. (2000). Dependence of indium-tin-oxide work function on surface cleaningmethod as studied by ultraviolet and x-ray photoemission spectroscopies. Journal of Applied Physics, 87(1), 295-298. http://dx.doi.org/10.1063/1.371859.

20. Takimoto, H. G. (2013). Estudo de polifluorenos como camada emissora de dispositivos eletroluminescentes eficientes (Master's thesis). Escola Politécnica de Engenharia Metalúrgica e de Materiais, Universidade de São Paulo, São Paulo.

21. Moraes, J. I. B. (2013). Estudo da camada de TCO e de PVK em dispositivos OLEDs e elaboração de um reator de UV-ozônio. São Paulo: Faculdade de Tecnologia de São Paulo. Final Paper.

22. Erik, Y. Y. (2011). Estudo de encapsulamento de dispositivos poliméricos-orgânicos eletroluminescentes. São Paulo: Universidade de São Paulo. Final Paper.

23. Fábio, C. C. (2013). Síntese e caracterização de polímeros contendo 9-9 dioctilfluoreno e 8-oxioctilquinolina para utilização como camada emissora de PLEDs (Doctoral thesis). Escola Politécnica de Engenharia Metalúrgica e de Materiais, Universidade de São Paulo, São Paulo.

24. National Information Standards Organization – NISO. (2015). How the information world connects. Bethesda. Retrieved in 17 May 2015, from http://www.niso.org/publications/tr/tr01.pdf

25. Sydney, C. (1930). A theory of upper-atmospheric ozone. Memoirs of the Royal Meteorological Society, 3(26), 103-125. Retrieved in 17 May 2015, from http://www.rmets.org/sites/default/files/chapman-memoirs.pdf

26. UV Disinfection, Aplication Information. (2004). Perfection preserved by the purest of light. Netherlands: Philips.

27. Satoru, Y. (2012). Estudo prospectivo de dispositivos P-OLEDs flexíveis. São Paulo: Faculdade de Tecnologia de São Paulo. Final Paper.

28. Nguyen, N. D., Le, H. C., Nguyen, T. L., Tran, T. C. T., Tran, Q. T., & Hyung-Kook, K. (2009). Preparation and characterization of nanostructured composite films for organic light emitting diodes. Journal of Physics: Conference Series, 187(1), 1-8. http://dx.doi.org/10.1088/1742-6596/187/1/012029.

29. Erick, V. G. (2011). Estudo do desempenho de dispositivos diodos poliméricos-orgânicos emissores de luz utilizando-se camada PEDOT:PSS. São Paulo: Faculdade de Tecnologia de São Paulo. Final Paper.

30. Erick, V. G., Victor, S., Elvo, C. B. J., Wang, S. H., & Emerson, R. S. (2011). Dispositivos P/OLEDs com PVK e diferentes ETLs. In Anais do 13° Simpósio de Iniciação Científica (pp. 64). São Paulo: Faculdade de Tecnologia de São Paulo.
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