Abstract
Manufacturing small-molecule organic light-emitting diodes (OLEDs) via inkjet printing is rather attractive for realizing high-efficiency and long-life-span devices, yet it is challenging. In this paper, we present our efforts on systematical investigation and optimization of the ink properties and the printing process to enable facile inkjet printing of conjugated light-emitting small molecules. Various factors on influencing the inkjet-printed film quality during the droplet generation, the ink spreading on the substrates, and its solidification processes have been systematically investigated and optimized. Consequently, halogen-free inks have been developed and large-area patterning inkjet printing on flexible substrates with efficient blue emission has been successfully demonstrated. Moreover, OLEDs manufactured by inkjet printing the light-emitting small molecules manifested superior performance as compared with their corresponding spin-cast counterparts.
| Original language | English |
|---|---|
| Pages (from-to) | 40533-40540 |
| Number of pages | 8 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 9 |
| Issue number | 46 |
| DOIs | |
| State | Published - 22 Nov 2017 |
Keywords
- halogen-free inks
- inkjet printing
- large-area patterning
- organic light-emitting diodes (OLEDs)
- small molecules