Length and temperature dependence of electrical conduction through dithiolated porphyrin arrays

Bong Keun Kang, Naoki Aratani, Jong Kuk Lim, Dongho Kim, Atsuhiro Osuka, Kyung-hwa Yoo

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We present an investigation of electrical transport through fused and orthogonal dithiolated porphyrin arrays of different molecular lengths. Length dependence measurements show that conductance decreases much more slowly with molecular length than the exponential dependence expected for a coherent tunneling process. It suggests that the electrical conduction through porphyrin arrays is mainly due to the thermally activated hopping transport. From the temperature dependence of ISD-VSD curves, the thermal activation energy Ea is estimated to be about 0.35 eV at zero-bias voltage, independently of molecular conformation and length.

Original languageEnglish
Pages (from-to)303-306
Number of pages4
JournalChemical Physics Letters
Volume412
Issue number4-6
DOIs
Publication statusPublished - 2005 Sep 5

Fingerprint

Porphyrins
porphyrins
conduction
temperature dependence
Bias voltage
Conformations
Activation energy
activation energy
Temperature
electric potential
curves
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces
  • Condensed Matter Physics

Cite this

Kang, Bong Keun ; Aratani, Naoki ; Lim, Jong Kuk ; Kim, Dongho ; Osuka, Atsuhiro ; Yoo, Kyung-hwa. / Length and temperature dependence of electrical conduction through dithiolated porphyrin arrays. In: Chemical Physics Letters. 2005 ; Vol. 412, No. 4-6. pp. 303-306.
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Length and temperature dependence of electrical conduction through dithiolated porphyrin arrays. / Kang, Bong Keun; Aratani, Naoki; Lim, Jong Kuk; Kim, Dongho; Osuka, Atsuhiro; Yoo, Kyung-hwa.

In: Chemical Physics Letters, Vol. 412, No. 4-6, 05.09.2005, p. 303-306.

Research output: Contribution to journalArticle

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AU - Osuka, Atsuhiro

AU - Yoo, Kyung-hwa

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