Printed metal grid conductors can be used in thin, flexible and large area lighting sources based on e.g. light-emitting electrochemical cells (LEC). Similar to organic light emitting diodes (OLEDs), LECs are thin film electroluminescent devices, which can be processed from solution. However, LECs have a more simple architecture, and don't rely on air-sensitive chargeinjection layers or metals for electron injection. This offers simplicity for manufacturing process, cost-efficiency and easier large scale manufacturing. Printing methods such as inkjet and flexography are suitable for manufacturing metal grid conductors needed in LEC devices. The goal of this paper is to evaluate the potential of flexography and inkjet printing to manufacture metal grid conductors in industrial scale. Printing equipment that can be upscaled to industrial scale is used and printing conditions are modified to meet the device requirements. Performance and properties of inkjet and flexographic printed conductors are compared. Finally, feasibility of the required industrial setup is evaluated.
|Title of host publication||Technical program and proceedings|
|Subtitle of host publication||28th International Conference on Digital Printing Technologies, NIP28 & Digital Fabrication 2012, 9-13 September 2012, Quebec City, Quebec, Canada|
|Publisher||The Society for Imaging Science and Technology, IS&T|
|Publication status||Published - 2012|
|MoE publication type||B3 Non-refereed article in conference proceedings|
|Event||Digital Fabrication 2012: Co-located with the 28th International Conference on Digital Printing Technologies, NIP28 - Quebec City, Canada|
Duration: 9 Sep 2012 → 13 Sep 2012
|Conference||Digital Fabrication 2012|
|Period||9/09/12 → 13/09/12|
- electrochemical cell
Hakola, L., Jansson, E., Allen, M., Rousu, S., & Suhonen, R. (2012). Optimizing the performance of metal grid conductors by modifying printing conditions. In Technical program and proceedings: 28th International Conference on Digital Printing Technologies, NIP28 & Digital Fabrication 2012, 9-13 September 2012, Quebec City, Quebec, Canada (pp. 155-158). The Society for Imaging Science and Technology, IS&T.