Structural, optical, and electronic properties of vanadium oxide nanotubes

2005 ◽  
Vol 72 (11) ◽  
Author(s):  
X. Liu ◽  
C. Täschner ◽  
A. Leonhardt ◽  
M. H. Rümmeli ◽  
T. Pichler ◽  
...  
Keyword(s):  
Vanadium Oxide ◽  
Electronic Properties ◽  
Optical And Electronic Properties ◽  
Vanadium Oxide Nanotubes

Structural and optical characterization of ball-milled copper-doped bismuth vanadium oxide (BiVO4)

CrystEngComm ◽  
2015 ◽  
Vol 17 (17) ◽  
pp. 3366-3375 ◽  
Author(s):  
Victor-Ishrayelu Merupo ◽  
Subramaniam Velumani ◽  
Karolina Ordon ◽  
Nicolas Errien ◽  
Jacek Szade ◽  
...  
Keyword(s):  
Chemical Synthesis ◽  
Vanadium Oxide ◽  
Electronic Properties ◽  
Optical Characterization ◽  
Optical And Electronic Properties

Mechano-chemical synthesis of Cu-doped BiVO4 monoclinic nanopowders and investigation of structural, optical and electronic properties.

scholarly journals Mechanical and electronic properties of vanadium oxide nanotubes

2009 ◽  
Vol 105 (7) ◽  
pp. 074317 ◽  
Author(s):  
B. Sipos ◽  
M. Duchamp ◽  
A. Magrez ◽  
L. Forró ◽  
N. Barišić ◽  
...  
Keyword(s):  
Vanadium Oxide ◽  
Electronic Properties ◽  
Vanadium Oxide Nanotubes

Structure and electronic properties of Li-doped vanadium oxide nanotubes

2008 ◽  
Vol 128 (22) ◽  
pp. 224701 ◽  
Author(s):  
I. Hellmann ◽  
Ch. Täschner ◽  
R. Klingeler ◽  
A. Leonhardt ◽  
B. Büchner ◽  
...  
Keyword(s):  
Vanadium Oxide ◽  
Electronic Properties ◽  
Vanadium Oxide Nanotubes

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

scholarly journals Defect Processes in Halogen Doped SnO2

2021 ◽  
Vol 11 (2) ◽  
pp. 551
Author(s):  
Petros-Panagis Filippatos ◽  
Nikolaos Kelaidis ◽  
Maria Vasilopoulou ◽  
Dimitris Davazoglou ◽  
Alexander Chroneos
Keyword(s):  
Electronic Properties ◽  
Tin Oxide ◽  
Density Functional ◽  
Structural Changes ◽  
High Dielectric Constant ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Optical And Electronic Properties ◽  
High Dielectric ◽  
Gap States

In the present study, we performed density functional theory calculations (DFT) to investigate structural changes and their impact on the electronic properties in halogen (F, Cl, Br, and I) doped tin oxide (SnO2). We performed calculations for atoms intercalated either at interstitial or substitutional positions and then calculated the electronic structure and the optical properties of the doped SnO2. In all cases, a reduction in the bandgap value was evident, while gap states were also formed. Furthermore, when we insert these dopants in interstitial and substitutional positions, they all constitute a single acceptor and donor, respectively. This can also be seen in the density of states through the formation of gap states just above the valence band or below the conduction band, respectively. These gap states may contribute to significant changes in the optical and electronic properties of SnO2, thus affecting the metal oxide’s suitability for photovoltaics and photocatalytic devices. In particular, we found that iodine (I) doping of SnO2 induces a high dielectric constant while also reducing the oxide’s bandgap, making it more efficient for light-harvesting applications.

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