Dissertation > Excellent graduate degree dissertation topics show

Fabrication of Morphology Controlled TiO2 Nanotubes and Their Applications in the Solar Cells

Author: LiZiXia
Tutor: ZhangHaoLi
School: Lanzhou University
Course: Organic Chemistry
Keywords: TiO2 nanotubes CdS/CdSe/ZnS PbSe/PbS Ag nanorod
CLC: TB383.1
Type: Master's thesis
Year: 2011
Downloads: 118
Quote: 0
Read: Download Dissertation

Abstract


In this work, a series of TiO2 nanotubes with different morphologies were fabricated by controlling the cyclic voltage and cyclic current anodization, respectively. The application of TiO2 nanotubes on the quantum dots sensitized solar cells (QDSSC) were studied, and relationship between the structure and the photonic and electronic properties were studied. In addition, we fabricated Ag nanorod by using the anodic aluminium oxide (AAO) and TiO2 nanotubes as templates, and tried to apply them in Surface Enhanced Raman Scattering (SERS).The main results are as below:1. We have fabricated smooth TiO2 nanotubes by anodic anodization, and studied there crystal properties. We also fabricate a series of TiO2 nanotubes with different morphologies by controlling the cyclic voltage and cyclic current anodization, respectively. The relative advantages are discussed.2. We have successfully fabricated a new type of TiO2 NTs array photoanode, which is sequentially modified by CdS, CdSe and ZnS QDs using a chemical bath deposition (CBD) method. The co-sensitized electrode exhibited significantly improved photo response compared to the single type QD sensitized electrodes, including both expanded spectral response range and enhanced IPCE performance. We also discuss the reason for the improvement of the photoanode.3. Titania nanotubes (TiNTs) were modified with PbSe and PbS quantum dots (QDs) by using a bifunctional molecule thiolactic acid linker. As a result, the absorption of TiO2 nanotubes is broadened from the UV region to the visible light harvesting region by PbSe QDs coating, meanwhile the photocurrent was also improved. However, the improvement of the PbSe/PbS QDs co-sensitized TiNTs was lower than PbSe QDs sensitized electrode.4. We have fabricated Ag nanorods by using the anodic aluminium oxide (AAO) and TiO2 nanotubes as templates, and studied their applications in Surface Enhanced Raman Scattering (SERS).

Related Dissertations

  1. TiO 2 nanotube synthesis and modification and photocatalytic properties of,O643.32
  2. Preparation and Photocatalytic Behavior of Zn2+ Doped TiO2 One-dimensional Nanomaterials,TB383.1
  3. Electrochemical Capacitance of Composite Electrodes Based on TiO2 Nanotubes and Carbon Nanotubes,TM53
  4. Research on the Fabrications of PbSe and PbS Nanomaterials by Sonochemical and Sonoelectrochemical Methods,TB383.1
  5. Study on the Fabrication and Properties of One-dimensional TiO2 Composite,TB383.1
  6. Fabrication of TiO2 Nanotubes and Its Investigation for Biosensor,TB383.1
  7. Synthesis and Electrocatalytic Application of Prussian Blue and Titania Oxide Nanotubes Composites,TB383.1
  8. Containing iron TiO 2 Nanotube Adsorption removal of As (Ⅴ) study,X703
  9. Study on the Preparation of Nonmetal-doped TiO2 Nanotubes and Their Photoelectrocatalytic Performance,X505
  10. Studies of Nanoporous TiO2 Photoelectrodes of Dye-sensitized Solar Cells,TM914.4
  11. TiO_2 Nanotube Array Preparation and Photocatalytic Characteristics,X50
  12. Wet oxidation / photocatalytic depth treatment manned spacecraft studies of condensed water,X703.1
  13. Deposition of Ag and CuO TiO_2 Nanotube and Its Properties,TB383.1
  14. Preparation of Two-nonmetal-codoped TiO2 Nanotubes Using Anodization and Their Photocatalytic Performance under Visible Light Irradiation,X505
  15. Preparation of Titania Nanotubes and Its Properties on Photocatalysts and Electrocatalysts,O643.36
  16. Fabrication of TiO2 Nanotubes and Its Electrochemical Applications,TB383.1
  17. Study on Preparation of TiO2 Nanotube and Photocatalytic Activity,X703
  18. Preparation and Electrochemical Performance of One Dimensional Nanomaterials for Lithium Ion Batteries,TB383.1
  19. Effect of Ag, N Doping on TiO2 Nanotube Electrode Photocatalytic Degradation Organic Dye Solution,TB383.1
  20. The Preparation of Metal Oxide Photocatalysts and Their Application in Degradation of Waste Gas and Water Splitting,X701

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
© 2012 www.DissertationTopic.Net  Mobile