TY - GEN
T1 - Computational study on the performance comparison of monolayer and bilayer zigzag graphene nanoribbon FETs
AU - Lam, Kai Tak
AU - Liang, Gengchiau
PY - 2009
Y1 - 2009
N2 - In our ab initio study on the device performance of nitrogen-doped monolayer zigzag GNR (ZGNR) FETs, an increase in ZGNR width from 0.92 nm to 1.78 nm degrades the I max/I min ratio due to the decrease in the energy bandgap (E g) which causes the I min to increase. It is also observed that the presence of vacancy at the edges of the channel ribbon can also open up an E g in ZGNRs as nitrogen dopants, and the performance of such device depends greatly on the vacancy concentration. In addition, simulation was carried out on the nitrogen-doped bilayer ZGNR FET and comparing to the monolayer ZGNR FET, the bilayer device provides a larger current while the I max/I min is lowered.
AB - In our ab initio study on the device performance of nitrogen-doped monolayer zigzag GNR (ZGNR) FETs, an increase in ZGNR width from 0.92 nm to 1.78 nm degrades the I max/I min ratio due to the decrease in the energy bandgap (E g) which causes the I min to increase. It is also observed that the presence of vacancy at the edges of the channel ribbon can also open up an E g in ZGNRs as nitrogen dopants, and the performance of such device depends greatly on the vacancy concentration. In addition, simulation was carried out on the nitrogen-doped bilayer ZGNR FET and comparing to the monolayer ZGNR FET, the bilayer device provides a larger current while the I max/I min is lowered.
UR - https://www.scopus.com/pages/publications/70350599928
U2 - 10.1109/IWCE.2009.5091098
DO - 10.1109/IWCE.2009.5091098
M3 - Conference contribution
AN - SCOPUS:70350599928
SN - 9781424439270
T3 - Proceedings - 2009 13th International Workshop on Computational Electronics, IWCE 2009
BT - Proceedings - 2009 13th International Workshop on Computational Electronics, IWCE 2009
T2 - 2009 13th International Workshop on Computational Electronics, IWCE 2009
Y2 - 27 May 2009 through 29 May 2009
ER -