Wenjuan Zhu, Tony Low, et al.
Journal of Applied Physics
Polyethylene imine and diazonium salts are used as complementary molecular dopants to engineer a doping profile in a graphene transistor. Electronic transport in this device reveals the presence of two distinct resistance maxima, alluding to neutrality point separation and subsequent formation of a spatially abrupt junction. Carrier mobility in this device is not significantly affected by molecular doping or junction formation, and carrier transmission is found to scale inversely with the effective channel length of the device. Chemical dilutions are used to modify the dopant concentration and, in effect, alter the properties of the junction. © 2009 American Institute of Physics.
Wenjuan Zhu, Tony Low, et al.
Journal of Applied Physics
Chun Yung Sung, Yu-Ming Lin, et al.
VLSI-TSA 2010
Yu-Ming Lin, Keith A. Jenkins, et al.
IMS 2011
Joseph Abel, Akitomo Matsubayashi, et al.
Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics