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Behaviors Of Electrons In Organic-inorganic Complex Electroluminescence Device

Posted on:2009-10-23Degree:MasterType:Thesis
Country:ChinaCandidate:Y LiFull Text:PDF
GTID:2121360242989553Subject:Optics
Abstract/Summary:PDF Full Text Request
The work of this thesis refers to the properties of inorganic-polymer composite devices. Models are designed to simulate the behaviors of electrons in thin film, which include the voltage distribution between polymer and inorganic layers, the relationship of voltage and current, the multiplying factor M and the relationship of voltage and current. Finally, through the comparison of simulations and experiments, we prove the existence of secondary electrons and show its effect to illumination. However, the main voltage is assigned on the polymer layer, which leads to reducing the effect of accelerating layer. To ascribe this problem, except the higher carrier mobility and lower dielectric constant of polymer materials, perhaps, it could be enhanced by the excitation of alternating current (AC). The reason is that AC excitation can counteract the accumulation of electrons and raise the voltage fell on the inorganic layer. It could prove the phenomenon that solid state cathodoluminescence is more obvious under AC bias than under DC bias. At the same time, the breakdown voltage for its devices under AC is higher than that under DC.In summary, the models for the process of electron behaviors are applied to these two kinds of device, typical organic devices and solid state cathodoluminescence devices. Based on these models, we prove that secondary electrons are indeed to enhance the luminance.
Keywords/Search Tags:Inorganic-organic complex device, Electroluminescence, Behaviors of electron, Solid State Cathodoluminescence
PDF Full Text Request
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