Flexible substrate displays are critical to organic electronics, e‐paper’s and e‐ink’s development. Many different types of materials are under investigation, including glass, polymer films and metallic foils. In this work we report a comparison study of polymer films as flexible substrates for polymer light emitting diodes (PLEDs) technology. The selected polymer substrates are two thermoplastic semi‐crystalline polymers (PET and PEN) and a high Tg material that cannot be melt processed (PAR). Firstly, the chosen films were characterized in morphology and optical properties with the aim to confirm their suitability for optoelectronic applications. Transmittance was analysed by UV‐Vis spectrophotometry and roughness by a surface profilometer. Finally, the surface energy of substrates (untreated and after UV‐ozone treatment) was estimated by contact angle measurements in order to evaluate their wettability for active materials deposition.

Topics
Light emitting diodes, Organic semiconductors, Optoelectronic applications, Measuring instruments, Air pollution, Polymers, Thin films, Spectrophotometry
This content is only available via PDF.
© 2008 American Institute of Physics.
2008
American Institute of Physics
You do not currently have access to this content.