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Search for "optical bandgap" in Full Text gives 29 result(s) in Beilstein Journal of Nanotechnology.

Optical absorption signature of a self-assembled dye monolayer on graphene

  • Tessnim Sghaier,
  • Sylvain Le Liepvre,
  • Céline Fiorini,
  • Ludovic Douillard and
  • Fabrice Charra

Beilstein J. Nanotechnol. 2016, 7, 862–868, doi:10.3762/bjnano.7.78

Graphical Abstract
  • changes of the optical bandgap. However, alkyl chains present here should reduce such interactions by maintaining the conjugated moiety at a larger distance from graphene. This is substantiated by the preservation of the absorption line-shape and the balance between vibronic contributions. This also means
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Letter
Published 14 Jun 2016

An insight into the mechanism of charge-transfer of hybrid polymer:ternary/quaternary chalcopyrite colloidal nanocrystals

  • Parul Chawla,
  • Son Singh and
  • Shailesh Narain Sharma

Beilstein J. Nanotechnol. 2014, 5, 1235–1244, doi:10.3762/bjnano.5.137

Graphical Abstract
  • in Figure 3C(a–c), which shows the enhancement of the optical bandgap (as calculated from the Tauc’s plot involving the absorption coefficient, α and the photon energy hν) from CISe to CZTSe. The bandgap values of pristine CISe, CIGSe and CZTSe are ≈1.03 eV, 1.1 eV and 1.15 eV, respectively (Figure
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Full Research Paper
Published 08 Aug 2014

Surface passivation and optical characterization of Al2O3/a-SiCx stacks on c-Si substrates

  • Gema López,
  • Pablo R. Ortega,
  • Cristóbal Voz,
  • Isidro Martín,
  • Mónica Colina,
  • Anna B. Morales,
  • Albert Orpella and
  • Ramón Alcubilla

Beilstein J. Nanotechnol. 2013, 4, 726–731, doi:10.3762/bjnano.4.82

Graphical Abstract
  • and glass respectively. The results of the absorbance measurements are shown in Figure 2. Other works have previously reported an optical bandgap of Eopt = 6.4 ± 0.1 eV for as-deposited and annealed ALD Al2O3 films [18]. This means that this material is transparent for wavelengths above 200 nm
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Full Research Paper
Published 06 Nov 2013

Photoelectrochemical and Raman characterization of In2O3 mesoporous films sensitized by CdS nanoparticles

  • Mikalai V. Malashchonak,
  • Sergey K. Poznyak,
  • Eugene A. Streltsov,
  • Anatoly I. Kulak,
  • Olga V. Korolik and
  • Alexander V. Mazanik

Beilstein J. Nanotechnol. 2013, 4, 255–261, doi:10.3762/bjnano.4.27

Graphical Abstract
  • optical bandgap of bulk CdS. The observed increase in Eg with the decreasing number of SILAR cycles can be explained by the well-known quantum-confinement effect related to the discretization of energy levels in nanoparticles and the increase in the energy gap between LUMO and HOMO levels with the
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Full Research Paper
Published 11 Apr 2013
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