Room Temperature Negative Differential Resistance through Individual Organic Molecules on Silicon Surfaces

Nathan P. Guisinger, Mark E. Greene, Rajiv Basu, Andrew S. Baluch, Mark C Hersam

Research output: Contribution to journalArticle

329 Citations (Scopus)

Abstract

Room temperature negative differential resistance (NDR) has been measured through individual organic molecules on degenerately doped Si(100) surfaces using ultrahigh vacuum scanning tunneling microscopy (STM). For styrene molecules on n-type Si(100), NDR is observed only for negative sample bias because positive sample bias leads to electron stimulated desorption. By replacing styrene with a saturated organic molecule (2,2,6,6-tetramethyl-1- piperidinyloxy), electron stimulated desorption is not observed at either bias polarity. In this case, NDR is observed only for negative sample bias on n-type Si(100) and for positive sample bias on p-type Si(100). This unique behavior is consistent with a resonant tunneling mechanism via molecular orbitals and opens new possibilities for silicon-based molecular electronic devices and chemical identification with STM at the single-molecule level.

Original languageEnglish
Pages (from-to)55-59
Number of pages5
JournalNano Letters
Volume4
Issue number1
DOIs
Publication statusPublished - Jan 2004

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Silicon
Molecules
Styrene
Scanning tunneling microscopy
silicon
room temperature
molecules
Desorption
styrenes
scanning tunneling microscopy
Molecular electronics
Resonant tunneling
Temperature
desorption
Electrons
Ultrahigh vacuum
Molecular orbitals
molecular electronics
resonant tunneling
ultrahigh vacuum

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Room Temperature Negative Differential Resistance through Individual Organic Molecules on Silicon Surfaces. / Guisinger, Nathan P.; Greene, Mark E.; Basu, Rajiv; Baluch, Andrew S.; Hersam, Mark C.

In: Nano Letters, Vol. 4, No. 1, 01.2004, p. 55-59.

Research output: Contribution to journalArticle

Guisinger, Nathan P. ; Greene, Mark E. ; Basu, Rajiv ; Baluch, Andrew S. ; Hersam, Mark C. / Room Temperature Negative Differential Resistance through Individual Organic Molecules on Silicon Surfaces. In: Nano Letters. 2004 ; Vol. 4, No. 1. pp. 55-59.
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