Fabrication of nanosized molecular array device and logic gate using dimethyl-phenylethynyl thiol.
We fabricated an array of molecular devices with a simple vertical metal-molecule-metal (MMM) junction. The nano via holes are formed in SiNx or SiO2 layer by RIE to contain the molecules inside. Finally, the top Ti/Au contact has been deposited by e-beam evaporation with cooling stage. By using self-assembly process, the organic molecules dissolved in dry and oxygen-free THF are inserted to the nanopore array device for 24 hours. We used the newly synthesized compound 4-[4-(3,5-Dimethyl-phenylethynyl)-3-nitro-phenylethynyl]-benzenethiol (DN), which is designed for adding two methyl groups at 3,5 position of phenylethynyl group of Tour's compound (4-(2-Nitro-4-phenylethynyl-phenylethyyl)-benzenethiol). The molecular devices produced the diode-like I-V characteristics and were implemented to logic gate with 3 x 3 array devices containing the DN molecule.
Kim
Do-Hyun
DH
National Creative Research Initiative Center for Smart Molecular Memory, IT Convergence Technology Research Division, IT Convergence and Components Laboratory, ETRI, Daejeon, 305-350, Korea.
Lee
Hyoyoung
H
Song
Chung-Kun
CK
Lee
Changjin
C
D003460:Crystallization; D004581:Electronics; D004583:Electrons; D004867:Equipment Design; D018625:Microscopy, Atomic Force; D008956:Models, Chemical; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D010100:Oxygen / Q000737:chemistry; D010636:Phenols / Q000737:chemistry; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors
D010636:Phenols; D013438:Sulfhydryl Compounds; C042983:thiophenol; D010100:Oxygen