Máscaras mecânicas de sombra por eletrocorrosão para dispositivos eletro-ópticos

• Main Authors: Iraci da Anunciação Pereira, Viviane Carvalho Nogueira, Michele Odnicki da Silva, Marcos Henrique Mamoru Otsuka Hamanaka, Valdirene Sullas Teixeira Peressinotto, Elaine Fernanda Zen Ávila Von Zuben, Thebano Emílio de Almeida Santos
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2014-01-01
• Series: Química Nova
• Subjects: shadow mask; electrochemical corrosion; electro-optic devices
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014000100022&lng=en&tlng=en

Shadow masks are used in manufacturing processes for electro-optic devices to transfer patterns with different shapes and dimensions. For fabrication of organic based devices, shadow masks should be made of materials stable against organic solvents, high temperature, and robust, remaining unchanged after multiple cycles of use and fixation. Thus, stainless steel is suitable for shadow masks. A simple, cheap and quick method of obtaining shadow masks by electrochemical corrosion of stainless steel is reported. The shadow mask was used to evaporate cathode material to obtain an organic light emitting diode with active area of 9 mm². This device exhibited a turn-on voltage of 5 V and luminance of 14 cd/m².