Abstract
The current-driven dynamics of cyclopentene desorption from the Si(100) surface are studied using scanning tunneling microscopy (STM) measurements and electronic structure, transport, and reaction dynamics calculations. Cyclopentene is shown to desorb from n-type and p-type Si(100) surfaces with clear turn-on behavior at modest (+/- 3 V) sample biases. The yield of the desorption process for this saturated hydrocarbon is found to be 500-1000x lower than for previously studied unsaturated hydrocarbons, and measurements of the desorption rate as a function of tunneling current indicate a single-electron desorption mechanism. Electronic structure calculations point to low-lying resonant states resulting from partial hybridization of the cyclopentene with the silicon dimer, and ionic state equilibrium geometries show substantial distortion with respect to the neutral state. Transport calculations confirm the presence of electronic states lying within 2-3 eV of the Fermi level that possess relatively long electronic lifetimes (90-250 fs). Detailed reaction dynamics calculations indicate poor coupling between the excited modes and the desorption mode, consistent with the low desorption yields observed for cyclopentene. Since cyclopentene possesses a bonding geometry that is shared with many other organic adsorbates on silicon, the work outlined here is expected to have broad applicability to other moleculesemiconductor systems.
| Original language | English |
|---|---|
| Title of host publication | Current-Driven Phenomena in Nanoelectronics |
| Publisher | Pan Stanford Publishing Pte. Ltd. |
| Pages | 196-219 |
| Number of pages | 24 |
| ISBN (Print) | 9789814241502 |
| DOIs | |
| Publication status | Published - Oct 1 2010 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Current-driven desorption at the organic molecule-semiconductor interface : Cyclopentene on Si(100). / Yoder, N. L.; Jorn, R.; Kaun, C. C.; Seideman, T.; Hersam, Mark C.
Current-Driven Phenomena in Nanoelectronics. Pan Stanford Publishing Pte. Ltd., 2010. p. 196-219.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Current-driven desorption at the organic molecule-semiconductor interface
T2 - Cyclopentene on Si(100)
AU - Yoder, N. L.
AU - Jorn, R.
AU - Kaun, C. C.
AU - Seideman, T.
AU - Hersam, Mark C
PY - 2010/10/1
Y1 - 2010/10/1
N2 - The current-driven dynamics of cyclopentene desorption from the Si(100) surface are studied using scanning tunneling microscopy (STM) measurements and electronic structure, transport, and reaction dynamics calculations. Cyclopentene is shown to desorb from n-type and p-type Si(100) surfaces with clear turn-on behavior at modest (+/- 3 V) sample biases. The yield of the desorption process for this saturated hydrocarbon is found to be 500-1000x lower than for previously studied unsaturated hydrocarbons, and measurements of the desorption rate as a function of tunneling current indicate a single-electron desorption mechanism. Electronic structure calculations point to low-lying resonant states resulting from partial hybridization of the cyclopentene with the silicon dimer, and ionic state equilibrium geometries show substantial distortion with respect to the neutral state. Transport calculations confirm the presence of electronic states lying within 2-3 eV of the Fermi level that possess relatively long electronic lifetimes (90-250 fs). Detailed reaction dynamics calculations indicate poor coupling between the excited modes and the desorption mode, consistent with the low desorption yields observed for cyclopentene. Since cyclopentene possesses a bonding geometry that is shared with many other organic adsorbates on silicon, the work outlined here is expected to have broad applicability to other moleculesemiconductor systems.
AB - The current-driven dynamics of cyclopentene desorption from the Si(100) surface are studied using scanning tunneling microscopy (STM) measurements and electronic structure, transport, and reaction dynamics calculations. Cyclopentene is shown to desorb from n-type and p-type Si(100) surfaces with clear turn-on behavior at modest (+/- 3 V) sample biases. The yield of the desorption process for this saturated hydrocarbon is found to be 500-1000x lower than for previously studied unsaturated hydrocarbons, and measurements of the desorption rate as a function of tunneling current indicate a single-electron desorption mechanism. Electronic structure calculations point to low-lying resonant states resulting from partial hybridization of the cyclopentene with the silicon dimer, and ionic state equilibrium geometries show substantial distortion with respect to the neutral state. Transport calculations confirm the presence of electronic states lying within 2-3 eV of the Fermi level that possess relatively long electronic lifetimes (90-250 fs). Detailed reaction dynamics calculations indicate poor coupling between the excited modes and the desorption mode, consistent with the low desorption yields observed for cyclopentene. Since cyclopentene possesses a bonding geometry that is shared with many other organic adsorbates on silicon, the work outlined here is expected to have broad applicability to other moleculesemiconductor systems.
UR - http://www.scopus.com/inward/record.url?scp=84880185725&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84880185725&partnerID=8YFLogxK
U2 - 10.4032/9789814241519
DO - 10.4032/9789814241519
M3 - Chapter
AN - SCOPUS:84880185725
SN - 9789814241502
SP - 196
EP - 219
BT - Current-Driven Phenomena in Nanoelectronics
PB - Pan Stanford Publishing Pte. Ltd.
ER -