Dual-color polymer light-emitting pixels processed by hybrid inkjet printing

Journal Article · Sun Nov 01 04:00:00 EST 1998 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.122533· OSTI ID:663663

Chang, S; Bharathan, J; Yang, Y ^[1]; Helgeson, R; Wudl, F ^[2]; Ramey, M B; Reynolds, J R ^[3]

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1. Department of Materials Science and Engineering, University of California-Los Angeles, Los Angeles, California 90095 (United States)
2. Department of Chemistry and Biochemistry, Exotic Materials Institute, University of California-Los Angeles, Los Angeles, California 90095 (United States)
3. Department of Chemistry, Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States)

A hybrid inkjet printing (HIJP) technology, which combines a pin-hole free polymer buffer layer and an inkjet printed polymer layer, allows the patterning of high quality polymer light-emitting devices. In this letter, we present a successful demonstration of controllable patterning of dual-color polymer light-emitting pixels using this HIJP technique. In this demonstration, the polymer buffer layer is a wide band gap, blue emitting semiconducting polymer prepared by the spin-casting technique. The inkjet printed layer is a red-orange semiconducting polymer which was printed onto the buffer layer. When a proper solvent was selected, the printed polymer diffused into the buffer layer and efficient energy transfer took place 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. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 663663
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 18 Vol. 73; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COLOR
DISPLAY DEVICES
ELECTROLUMINESCENCE
LAYERS
LIGHT EMITTING DIODES
ORGANIC SEMICONDUCTORS
PHOTOLUMINESCENCE
POLYMERS
SEMICONDUCTOR MATERIALS
SPIN-ON COATING