Inkjet Printing High-Resolution, Large-Area Graphene Patterns by Coffee-Ring Lithography

1. Lei Zhang^1,2, 
2. Hongtao Liu^1,2, 
3. Yan Zhao^1,2,
4. Xiangnan Sun^1,2, 
5. Yugeng Wen^1,2, 
6. Yunlong Guo¹, 
7. Xike Gao³, 
8. Chong-an Di¹, 
9. Gui Yu¹,
10. Yunqi Liu^1,*

Article first published online: 21 DEC 2011

Taking advantage of the “coffee-ring” effect, graphene electrodes with channel lengths as low as 1−2 micrometers are patterned by inkjet printing. Organic thin film transistors and complementary inverters are also fabricated using these graphene electrodes and show excellent performance.