Dissertation > Excellent graduate degree dissertation topics show

Study on the Application of ALD Deposited Al2O3in Dye Sensitized Solar Cell

Author: DongWan
Tutor: MengTao
School: Beijing Institute of Printing
Course: Materials Physics and Chemistry
Keywords: Dye sensitized solar cells SnO2photoelectrode ALD parameters Solid-state electrolyte Double coating structure
CLC: TM914.4
Type: Master's thesis
Year: 2014
Downloads: 110
Quote: 0
Read: Download Dissertation

Abstract


In1991, Gr tzel et al invented dye sensitized solar cells （DSSCs） withnanotechnology, and the conversion efficiency is increased to7%, which opened theera to the development of dye sensitized solar cells. Due to a low cost process, such asno high energy consumption, without vacuum，raw materials available easily, simplemanufacture process, DSSCs demonstarte a remarkably advantage than traditionalsilicon solar cells. Therefore, in the past twenty years, the dye sensitized solar cell hasbeen widely studied in the world. And it was considered to be the one of candidates toachieve the large-scale application in solar cell.But there are many challenges for dye-sensitized solar cells, such as the electronmobility rate of titanium dioxide is lower, the leakage of liquid electrolyte and thepoor stability. Therefore, in this paper we prepared the cell with tin oxide as anodematerials for liquid dye-sensitized solar cell and the PEO based polymer compositesolid electrolyte for solid-state dye-sensitized solar cell. And then an ultra thin Al2O3layer coated on anode for improvement the efficiency of dye-sensitized solar cells iscarried out in this thesis.We explore the role of an ultra thin Al2O3layer coating SnO2particles fordye-sensitised cells energy conversion efficiency, which was used in TiO2photoelectrode due to Al2O3building a potential barrier layer in the photoelectrode/dyes/electrolyte interface to suppress the interfacial charge recombination. Besides,due to a higher isoelectric point,Al2O3coating promotes the dye absorption andimproves cell efficiency. Based on the dye absorption amount depending on the ALDprocess parameters we construct a three-step model of the ALD Al2O3in porous SnO2photoanode toexplain the effect of Al2O3coatings.We also use ALD technology to modify the photoelectrode in the solid-state solarcell. After combined TiCl4hydrolysis to prepare of Titania oxide with ALD aluminaoxide for two-layer structure, the charge recombination during electronic transmissionis suppressed and the connection between particles is significantly enhanced. The conversion efficiency of solid-state dye sensitized solar cells is promoted remarkably.

Related Dissertations

  1. Preparation and Properties Research of Porphyrin Derivitives in Dye-sensisized Solar Cell,TM914.4
  2. Study on Belt-type ZnO Photoanode for Dye-sensitized and Quantum-dot Sensitized Solar Cells,TM914.4
  3. The Electrochemical and Photoelectrochemical Properties of Nanostructured Semiconducted Electrodes,O649
  4. Preparation of Nanocrystalline Titanium Dioxide and Their Application in Dye-Sensitized Solar Cells,TM914.4
  5. Synthesis and Study on the Photovoltaic Properties of Oxadiazole Side Chains Based on Polythiophene Derivatives and D-π-A Dyes with Different Electron Donors,TM914.4
  6. Titania nanotube arrays dye-sensitized solar cell photovoltaic characteristics of,TM914.4
  7. Nano-TiO2 Thin Film Prepared by Colloidal Spray Coating and Its Application in Dye Sensitized Solar Cells,TM914.4
  8. Synthesis and Properties of the Tungstate Nanocrystals,TB383.1
  9. Preparation and Properties of Photo-anodes of Dye-sensitized Solar Cell,TM914.4
  10. Study of the Photoanode and Counter Electrode for Dye-sensitized Solar Cells,TM914.4
  11. Preparation of ZnO Nanostructure and Its Application on the Dye Sensitized Solar Cells,TB383.1
  12. The Modification and Photoelectrochemical Properties of Nanostructured TiO2 Electrodes,O614.411
  13. Study on Polymer Gel Electrolyte and TiO2-Ordered Thin Film for Dye-Sensitized Solar Cells,TM914.4
  14. Preparation of TiO_2 anodized nanotubes Its Application in Dye -sensitized solar cells and photocatalytic application,TB383.1
  15. Dye-sensitized solar cell organic photosensitive Theoretical Studies,TM914.4
  16. Pt, Co and one-dimensional array of TiO_2 Preparation, Characterization and Properties,TB383.1
  17. The Electrochemical and Photoelectrochemical Properties of Non Metal Doped Nanostructured TiO2Electrodes,O614.411
  18. Synthesis and Photovoltaic Performance of the TiO2 Nano-Structured Thin Films,O614.411
  19. Density Functional Theory Study on Absorption Spectral Properties Oftetrapyrrole Derivatives Dyes,TQ610.1
  20. The Theoretical Study of the Electronic Structure and Spectral Properties of Functional Materials,TB34
  21. Design and Synthesis of Ionic Liquids Electrolytes and Their Applications in Dye-Sensitized Solar Cells,TM914.4

CLC: > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Photocell > Solar cells
© 2012 www.DissertationTopic.Net  Mobile