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16 December 1998 Dual-color polymer light-emitting pixels processed by hybrid inkjet printing
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We present a successful demonstration of controllable patterning of dual-color polymer light-emitting pixels using a hybrid inkjet printing technique. In this demonstration, the polymer buffer layer is a wide bandgap, blue emitting semiconducting polymer (PPP-NRt3+), prepared by the spin-casting technique. The inkjet printed layer is a red-orange semiconductor polymer, (MPS-PPV) which was printed onto the buffer layer.When a proper solvent was selected, MPS-PPV diffused into the buffer layer and efficient energy transfer took place from the PPP-NEt3+ to the MPS-PPV generating a red-orange photoluminescence and electroluminescence from the inkjet printed sites. Based on this principle, blue and orange-red dual-color polymer light-emitting pixels were fabricated on the same substrate. The use of this concept represents an entirely new technology for fabricating polymer multicolor displays with high-resolution, lateral patterning capability.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shun-Chi Chang, Jayesh Bharathan, Roger Helgeson, Fred Wudl, Yang Yang, Michael B. Ramey, and John R. Reynolds "Dual-color polymer light-emitting pixels processed by hybrid inkjet printing", Proc. SPIE 3476, Organic Light-Emitting Materials and Devices II, (16 December 1998);

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