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Identifier 000336871
Title p-SrCu2O2 and n-ZnO(:AL) Thin films : growth, properties and applications
Alternative Title Λεπτά υμένια Sr-Cu-O και Zn-O: Παρασκευή με παλμικό λέιζερ, ιδιότητες, εφαρμογές
Author Βάρδα, Μαρία
Thesis advisor Απεραθίτης, Ηλίας
Abstract In the present work, thin films of un-doped and doped ZnO and SrCu2O2 were grown and then characterized. The technique used for the growth was pulsed laser deposition. The films were mainly characterized according to their structural and optical properties as a function of different deposition parameters, such as substrate temperature and background oxygen pressure. Some electrical measurements also took place. Initially, the aim of the work was to obtain thin films with enhanced crystal structure and tuned electrical properties and transparency from UV to NIR of the spectral region. ZnO is an n-type material of wide ranging applications for a long time, including Transparent Conductive Oxides (TCOs). SrCu2O2 is a relatively novel p-type material which belongs to the arising p-type TCOs but, still, with inferior properties compared to ZnO and other n-type TCOs. The final aim of the work was to combine the growth of (un-doped or doped) n-ZnO and p-SrCu2O2 thin films, with the appropriate properties, in order to fabricate and realize a transparent p-n heterojunction. To reach the final aim it is important to fully understand the properties of the films. The present work was set for the fulfillment of the master degree in “Microelectronics & Optoelectronics” of the Physics Department of University of Crete. It has been carried out in laboratories of the Institute of Electronic Structure & Laser (IESL), Foundation for Research and Technology-Hellas (FORTH). A part of this work was within the framework of the European project FP6 – IST – FET NATCO (Novel & Advanced Transparent Conductive Oxides) (Contract no 511925). In the following chapters, after an introduction to TCOs, a review of ZnO and SrCu2O2 materials is presented. This is followed by an introduction to pulsed laser deposition technique and a brief theory on p-n heterojunctions is presented. Next, the experimental set-up and the film characterization methods used for the present work were presented. Finally the presentation and discussion of the results are given along with further work which could be done on TCO materials and devices.
Language English
Subject Pulsed laser deposition
Thin films
Issue date 2008-12-04
Collection   School/Department--School of Sciences and Engineering--Department of Physics--Post-graduate theses
  Type of Work--Post-graduate theses
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