Duan Research Group

Hetero-integrated Nanostructures and Nanodevices


Gallium nitride nanowire nanodevices

Y. Huang, X. Duan, Y. Cui, and C. M. Lieber

Nano Lett. 2, 101-104 (2002)

Field effect transistors (FETs) based on individual GaN nanowires (NWs) have been fabricated. Gate-dependent electrical transport measurements show that the GaN NWs are n-type and that the conductance of NW−FETs can be modulated by more than 3 orders of magnitude. Electron mobilities determined for the GaN NW FETs, which were estimated from the transconductance, were as high as 650 cm2/V·s. These mobilities are comparable to or larger than thin film materials with similar carrier concentration and thus demonstrate the high quality of these NW building blocks and their potential for nanoscale electronics. In addition, p−n junctions have been assembled in high yield from p-type Si, and these n-type GaN NWs and their potential applications are discussed.
UCLA, Department of Chemistry and Biochemistry
607 Charles E. Young Drive East, Box 951569
Los Angeles, CA 90095-1569
E-mail: xduan@chem.ucla.edu