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 UV-Ozone reactor with modified high pressure mercury vapor lamp for surface treatment of transparent conductive oxides used in electroluminescent polymeric devices

• Published in: Química nova Vol. 33; no. 8; pp. 1779 - 1783
• Main Authors: Emerson Roberto Santos, Fábio Conte Correia, Shu Hui Wang, Pilar Hidalgo, Fernando Josepetti Fonseca, Elvo Calixto Burini Júnior, Adnei Melges de Andrade
• Format: Journal Article
• Language: English
• Published: Sociedade Brasileira de Química 01-01-2010
• Subjects: HID mercury vapor lamp; transparent conductive oxide; UV-Ozone
• ISSN: 0100-4042; 1678-7064
• DOI: 10.1590/S0100-40422010000800027

An UV-Ozone reactor was developed with an ignition tube extracted into HID mercury lamp used to irradiation on zinc oxide (ZnO) and fluorinated tin oxide (FTO) films for PLEDs devices. Different exposures times were used. In contact angle measurements revealed better results for ZnO and FTO by 15 and 5 min, respectively. In Diffuse Reflectance Infra-red Fourier Transformed (DRIFT) spectroscopy allowed the observation of water, hydrocarbon and carbon dioxide adsorbed on the untreated TCO surfaces. After the UV-Ozone treatment the contaminants were significantly reduced or eliminated and the PLEDs devices decreased threshold voltages in comparison with respectively untreated TCOs.