For futuristic hybrid nanoelectronics it is essential that functional organic molecules should be grafted to Si. For this purpose, we have synthesized a specifically designed organic molecule, that is, 5-(4-undecenyloxyphenyl)-10,15,20-triphenylporphyrin (TPP-C11), and these molecules were electrografted on highly doped n-Si substrates. TPP-C11 molecules exhibited a hysteresis in current-voltage (J-V) characteristics, with a sharp jump in current at a bias of ±0.6 V. We propose that the J-V hysteresis could be associated with the resonant tunneling through HOMO/LUMO of the porphyrin moiety. We also demonstrate that such electrical bistability can be utilized for the molecular memory effect. © 2008 Elsevier B.V. All rights reserved.
CITATION STYLE
Koiry, S. P., Aswal, D. K., Chauhan, A. K., Saxena, V., Nayak, S. K., Gupta, S. K., & Yakhmi, J. V. (2008). Electrical bistability in electrografted 5-(4-undecenyloxyphenyl)-10,15,20-triphenylporphyrin monolayer on Si. Chemical Physics Letters, 453(1–3), 68–72. https://doi.org/10.1016/j.cplett.2008.01.003
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