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Oxygen related defects excitation and photoconductivity dependence of SnO2 sol-gel films with several light sources
(1999-12-01)
Since oxygen vacancies act as donors in SnO2, the electrical properties are related to deviation from stoichiometric composition. Depending on stoichiometry SnO2 can be highly insulating or may exhibit fairly high n-type ...
Modulated photoconductivity in the high and low frequency regimes
(Elsevier Science, 2008-12)
Different methods have been proposed to use modulated photoconductivity (MPC) measurements in order to extract information about the density of states (DOS) within the gap of defective semiconductors. Depending on the ...
Unusual effects of nanowire-nanowire junctions on the persistent photoconductivity in SnO2 nanowire network devices
(2021-01-01)
The persistent photoconductivity (PPC) effect is a commonly observed behavior in SnO2 nanostructures. Here we described and studied this effect through a comparative study, based on measurements of electronic transport ...
Photoelectrochemical response and photoconductivity of poly(3-methylthiophene)
(Pergamon-elsevier Science LtdOxfordInglaterra, 1998)
Electron scattering and effects of sources of light on photoconductivity of SnO2 coatings prepared by sol-gel
(Elsevier B.V., 1999-05-01)
Electro-optical properties of sol-gel derived 2 mol% antimony or niobium doped tin dioxide films have been measured. The electron density has been calculated considering all the relevant scattering mechanisms and experimental ...
Electron scattering and effects of sources of light on photoconductivity of SnO2 coatings prepared by sol-gel
(Elsevier B.V., 1999-05-01)
Electro-optical properties of sol-gel derived 2 mol% antimony or niobium doped tin dioxide films have been measured. The electron density has been calculated considering all the relevant scattering mechanisms and experimental ...
Excitation spectrum for ultrafast photogeneration of charged solitons in polyacetylene
(Elsevier B.V., 2003-04-04)
Ultrafast photoinduced absorption by IRAV modes is used to detect charged solitons in oriented polyacetylene. We find that soliton pairs are photogenerated within our time resolution of similar to250 fs with similar to100% ...
Contribution of oxygen related defects to the electronic transport in SnO2 sol-gel films
(2001-01-01)
SnO2 deposited by sol-gel is a polycrystalline film with small grain size. Oxygen present at a less grain boundary traps electrons and then the depletion layer around the potential barrier of the grain boundary becomes ...
Contribution of oxygen related defects to the electronic transport in SnO2 sol-gel films
(2001-01-01)
SnO2 deposited by sol-gel is a polycrystalline film with small grain size. Oxygen present at a less grain boundary traps electrons and then the depletion layer around the potential barrier of the grain boundary becomes ...