Dissertation > Excellent graduate degree dissertation topics show

Synthesis of GaN Nanowires and Research in the Field of Nanogenerators

Author: QianCheng
Tutor: LiMengZuo
School: Liaoning Normal University
Course: Condensed Matter Physics
Keywords: GaN nanowires Nano generator Chemical vapor deposition
CLC:
Type: Master's thesis
Year: 2012
Downloads: 4
Quote: 0
Read: Download Dissertation

Abstract


Gallium nitride (GaN) nano-materials is one of semiconductors representatives which has wide band gap, the excellent characteristics of high thermal conductivity, stable chemical properties, the larger saturated electron drift velocity etc. These excellent features make the GaN nano-materials be widely used in high-brightness LEDs, blue lasers, UV detectors, high-power heat device. In addition, the blue shift due to the non-polar GaN material can eliminate piezoelectric polarization nitride light-emitting device of radiative recombination efficiency an demission wavelengths. Preparation of non-polar GaN, GaN-based materials has become a new research focus. On a silicon (Si) and sapphire (Al2O3) substrate by chemical vapor deposite (CVD), and to study the growth of GaN nanowires has made some progress. The study was carried out for our next research such as:the GaN nano-generator as well as semiconductor devices and lay a solid experimental.Fistly, we may obtain GaN nanowires on a silicon (Si) and sapphire (Al2O3) substrates by adjusting the growth temperature via CVD method. The study found Al2O3substrate is easy growth of GaN, which is better lattice matching.Secondly, we test GaN nanowires prepared by X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM) and photoluminescence (PL) spectra. We found:the highest quality and the growth length increasing temperature was1000℃. Thirdly, GaN nano-materials can be applied to the nano-generator. The electromagnetic radiation signal generator distance directly affect the current siganal of the close of electromagnetic signals can produce strong radiation current signals. Cu-GaN generator can produce stronger current signal than other matal-GaN generators.

Related Dissertations

  1. Growth of Single-walled Carbon Nanotube Arrays and the Study of Their Adhesion Force,TB383.1
  2. Preparation and Application of Three Dimensional Reinforcements with Carbon Nanotubes Grown on the Fiber Surfaces in Situ,TB383.1
  3. Theoretical Study on Quantum Dots Semiconductor Optical Amplifier and MOCVD Growth of InAs/GaAs Quantum Dots,TN722
  4. Hydrogenated nanocrystalline silicon photovoltaic materials in hydrogen bonding defects in material structure and the impact of,TB383.1
  5. Effect of the Base Pressure and Residual Gases on the Properties of the Metal Film Deposition,O484.1
  6. Research on Cu-doped Orag-doped ZnO Nanostructure,TB383.1
  7. A Study on the Growth and Growth Mechanism of Single-Walled Carbon Nanotubes from Silica Nanoparticles,TB383.1
  8. AAO template - based SERS substrate research,TB383.1
  9. Fabrication and Yellow Luminescence Study of Single-crystalline SnO2 Nanostructure,TB383.1
  10. Carbon nanotubes prepared and its application in the field of photovoltaic Prospects,TB383.1
  11. Investigation of Patterning Nano-crystalline Diamond Films and Surface Hydrogen Adsorption,O484.1
  12. Synthesis and Characterization of One Dimension Inorganic Nanostructured Materials Using Porous Alumina Membrance,TB383.1
  13. A Study on the Growth and Growth Mechanism of Single-walled Carbon Nanotubes,TB383.1
  14. Chemical Vapor Growth of High Quality Hexagonal Boron Nitride Films Assisted by Catalysts,TB383.2
  15. Synthesis of GaN-related Nanomaterials by Chemical Vapor Deposition,TB383.1
  16. Study of Si-doped Diamond-like Carbon Films,TB383.2
  17. The Research of SiGe:H Alloy Thin Film by RF-PECVD and Its Application in Solar Cell,TM914.4
  18. Synthesis and Properties of One-dimensional CdS Nanowire Arrays,TB383.1
  19. The Preparation of Diamond Film Used as OLED Field Emission Cathode,TB383.2
  20. Mg-doped Nano-ZnO Via Chemical Vapor Deposition and Resistive Switching Effect,TB383.1
  21. Preparation and Properties of ZnMgO and ZnO Nanomaterials on Glass Substrate,TB383.1

CLC: >
© 2012 www.DissertationTopic.Net  Mobile