Paper transistor made with covalently bonded multiwalled carbon nanotube and cellulose

Sungryul Yun; Sang-Dong Jang; Gyu-Young Yun; Joo-Hyung Kim; Jaehwan Kim
September 2009
Applied Physics Letters;9/7/2009, Vol. 95 Issue 10, p104102
Academic Journal
We report a flexible paper transistor made with regenerated cellulose and covalently bonded multiwalled carbon nanotube (RC-MWCNT). MWCNT bonded to cellulose chains can act as electron channel paths in dielectric cellulose layers. It is found that the covalent bonding between cellulose and MWCNT can be modulated by reaction time and temperature. The RC-MWCNT paper transistor shows that the leakage current and the on/off ratio are strongly associated with the concentration of MWCNTs. The estimated electron mobility of RC-MWCNT paper is comparable to other organic transistor materials. The RC-MWCNT paper transistor has a potential for flexible electronic paper.


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