Single crystals of the organic semiconductor perylene tetracarboxylic dianhydride studied by Raman spectroscopy

Ténné, D. A.; Park, S.; Kampen, Thorsten U.; Das, Arindam; Scholz, Reinhard; Zahn, Dietrich R. T.

doi:10.1103/physrevb.61.14564

Cited by 64 publications

(76 citation statements)

References 15 publications

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“…5a. The splitting of the A-and B-component amounts to 5.5 cm À1 at 20 K, which is somewhat larger than the splitting of 3.3 cm À1 observed at single PTCDA crystals at room temperature [20]. After annealing to 450 K the A-and Bcomponent can be clearly distinguished according to the selection rules (A-component almost vanishes off-diagonally, while B-component stays the same).…”

Section: Structural Change In the Monolayersmentioning

confidence: 87%

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Raman Analysis of Ordered Organic Monolayers on Metal Surfaces

Wagner

2001

phys. stat. sol. (a)

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In this paper organic/metal interfaces, especially PTCDA/Ag(111), are analyzed by Raman spectroscopy. Inelastic light scattering allows, in contrast to other methods, the detection of in-plane vibrational modes of PTCDA. The first PTCDA monolayer (ML) shows distinct modification in the vibrational modes due to the direct contact to the Ag surface. The most pronounced effect was observed for the 1310 cm À1 mode. First principles calculations of the corresponding displacement pattern indicate, that the contact to the Ag surface most likely takes place at the center of the molecule. Furthermore, peak doublets (Davydov split) are observed at thin PTCDA layers (4 ML). We deduced their Raman selection rules, which allow to identify the A-and B-symmetry components. Upon annealing (300-450 K) crystalline reordering was detected by analysis of these peak doublets.

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Section: Structural Change In the Monolayersmentioning

confidence: 87%

“…As a model system for organic/metal interfaces 3, 4, 9, 10-perylene-tetracarboxylic dianhydride (PTCDA, see Fig. 1) [19][20][21] deposited on a Ag(111) surface is investigated. PTCDA is known to form epitaxial layers on Ag(111) in a herringbone structure with two molecules per unit cell [12,22].…”

Section: Introductionmentioning

confidence: 99%

Raman Analysis of Ordered Organic Monolayers on Metal Surfaces

Wagner

2001

phys. stat. sol. (a)

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“…The first one occurs when a static distortion transforms equivalent atomic positions to inequivalent ones [25]. A second mechanism is the correlation field or Davydov [25]- [27] splitting that occurs due to coupling of vibrations of molecular units at different equivalent sites in the unit cell, and is sensitive to transitions involving multiplication of the unit cell size (like for instance the Peierls distortion). The incommensurate nature of the blue bronzes may also activate vibrational modes in Raman spectra [28].…”

Section: Methodsmentioning

confidence: 99%

A Raman study of the charge-density-wave state in A_0.3MoO₃(A = K, Rb)

et al. 2008

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“…The observed vibrational transitions are due to intramolecular vibrations, while intermolecular vibrations are limited to lower frequencies ͑Ͻ6 THz͒. 19,22,29 To determine the dynamics of the photoinduced THz absorption, the change in transmitted THz intensity ͑induced absorption͒ ⌬I͑͒ is measured with a time-integrating HgCdTe detector as a function of delay time after the 400 nm excitation pulse. The ⌬I͑͒ trace for rubrene ͓Fig.…”

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confidence: 99%

Simultaneous ultrafast probing of intramolecular vibrations and photoinduced charge carriers in rubrene using broadband time-domain THz spectroscopy

et al. 2007

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We determine the ultrafast frequency-and time-resolved complex dielectric responses of photoexcited, single-crystal rubrene in the frequency range of 10-30 THz ͑330-1000 cm −1 ͒ using ultrafast broadband THz spectroscopy. In this frequency range, we observe the response of both photogenerated mobile charges and intramolecular vibrational modes simultaneously, both of which vary with time after excitation. The data in conjunction with a theoretical model indicate a dynamic blueshift of the 15.5 THz phonon.

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Single crystals of the organic semiconductor perylene tetracarboxylic dianhydride studied by Raman spectroscopy

Cited by 64 publications

References 15 publications

Raman Analysis of Ordered Organic Monolayers on Metal Surfaces

Raman Analysis of Ordered Organic Monolayers on Metal Surfaces

A Raman study of the charge-density-wave state in A_0.3MoO₃(A = K, Rb)

Simultaneous ultrafast probing of intramolecular vibrations and photoinduced charge carriers in rubrene using broadband time-domain THz spectroscopy

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Single crystals of the organic semiconductor perylene tetracarboxylic dianhydride studied by Raman spectroscopy

Cited by 64 publications

References 15 publications

Raman Analysis of Ordered Organic Monolayers on Metal Surfaces

Raman Analysis of Ordered Organic Monolayers on Metal Surfaces

A Raman study of the charge-density-wave state in A0.3MoO3(A = K, Rb)

Simultaneous ultrafast probing of intramolecular vibrations and photoinduced charge carriers in rubrene using broadband time-domain THz spectroscopy

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A Raman study of the charge-density-wave state in A_0.3MoO₃(A = K, Rb)