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

AUTOR(ES)

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

FONTE

Polímeros

DATA DE PUBLICAÇÃO

22/08/2016

RESUMO

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.

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