2-(2-Methoxyphenyl)-1,3-dimethyl-1H-benzoimidazol-3-ium iodide as a new air-stable n-type dopant for vacuum-processed organic semiconductor thin films.
2-(2-Methoxyphenyl)-1,3-dimethyl-1H-benzoimidazol-3-ium iodide (o-MeO-DMBI-I) was synthesized and employed as a strong n-type dopant for fullerene C(60), a well-known n-channel semiconductor. The coevaporated thin films showed a maximum conductivity of 5.5 S/cm at a doping concentration of 8.0 wt% (14 mol%), which is the highest value reported to date for molecular n-type conductors. o-MeO-DMBI-I can be stored and handled in air for extended periods without degradation and is thus promising for various organic electronic devices.
Department of Chemical Engineering, Stanford University, Stanford, California 94305, USA.
Peng
P
Wei
Torben
T
Menke
Benjamin D
BD
Naab
Karl
K
Leo
Moritz
M
Riede
Zhenan
Z
Bao
D000388:Air; D001562:Benzimidazoles / Q000138:chemical synthesis / Q000737:chemistry*; D008567:Membranes, Artificial; D015394:Molecular Structure; D012666:Semiconductors; D014618:Vacuum
C573072:2-(2-methoxyphenyl)-1,3-dimethyl-1H-benzoimidazol-3-ium iodide; D001562:Benzimidazoles; D008567:Membranes, Artificial