Surface transfer doping of diamond with a molecular heterojunction

Autor: Langley, D. P., Smets, Y., Stark, C. B., Edmonds, M. T., Tadich, A., Rietwyk, K. J., Schenk, A., Wanke, Martina, Wu, Q.-H., Barnard, P. J., Ley, Lothar, Pakes, C. I.
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Popis: Surface conductivity and C1s core level measurements were employed to show that surface transfer doping of hydrogen-terminated diamond C(100) can be achieved with a molecular heterojunction formed with C60F48 and an intralayer of zinc-tetraphenylporphyrin. Measurement of the shift in the diamond Fermi energy shows that the zinc-tetraphenylporphyrin (ZnTPP) layer modifies the C60F48–diamond interaction, modulating the extent of charge transfer between the diamond and the fluorofullerene. In contrast to the case of C60F48 acceptors, the presence of a ZnTPP layer prevents the formation of air-induced surface conductivity, showing that the intralayer acts to selectively separate these two doping channels.
Databáze: OpenAIRE