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.

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