Abstract
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 C 60F 48 and an intralayer of zinc-tetraphenylporphyrin. Measurement of the shift in the diamond Fermi energy shows that the zinc-tetraphenylporphyrin (ZnTPP) layer modifies the C 60F 48-diamond interaction, modulating the extent of charge transfer between the diamond and the fluorofullerene. In contrast to the case of C 60F 48 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.
Original language | English |
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Article number | 032103 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 3 |
DOIs | |
State | Published - 16 Jan 2012 |
Externally published | Yes |
Bibliographical note
Funding Information:We acknowledge financial support of the Australian Research Council.