Dissertation > Excellent graduate degree dissertation topics show

Study on Preparation of Cu(InGa)Se2Thin-film Solar Cell

Author: XiHui
Tutor: DanYuQiao
School: Northeastern University
Course: Materials Science
Keywords: CIGS thin-film solar cell Magnetron sputtering Vacuum evaporation seleniumpellets selenization
CLC: TM914.42
Type: Master's thesis
Year: 2011
Downloads: 16
Quote: 0
Read: Download Dissertation

Abstract


Solar cell as a new type of clean energy is one of primary energy sources in future. Si solar cell currently is still dominated on the market, CIGS thin-film solar cell is regarded as low cost, high conversion efficiency and prominent stability solar energy devices. With resources and environment requirement, the market of CIGS thin-film solar cell is inevitable. The highest conversion efficiency about19.9%of CIGS solar cells have been produced using the mufti-stage co-evaporation technique. The method of Sputtering and selenium can easily control the process and suit to industrial production. At present, conversion efficiency of the foreign solar cell is generally12-13%, our research just start, and our technical level is far behind.In this dissertation, one simple, reliable and reproductive technology was developed for CIGS solar cells by selenization of sputtering alloy precursors. Firstly,1.Oμm thick Mo layers were deposited by DC-magnetron sputtering on stainless steel sheet. The residual stresses were minimized by using two-layer structure and changing the working pressure. Next,700nm-thick CuInGa precursors were deposited onto Mo-coated glass substrates by sputtering with CuInGa alloy target. A reproducible and easily scalable two-step selenization process of CuInGa layers was developed to form high quality CIGS absorbing layers. High-quality GIGS absorbers have been former by selenization of CuInGa precursors in a partially closed graphite container using selenium pellets, avoiding the generation of toxic H2Se gas. High-quality CIGS absorbers firstly stay for30minutes at low temperature, then were insulated for25minutes at high temperature. The deposited CIGS absorbers exhibited a single phase chalcopyrite strctuction with a preferential orientation in the (112) direction. These layers were uniform, and grain pack tightly. CdS window layers were prepared by Chemical bath deposition and Vacuum evaporation. Analysing and comparing CdS thin films prepared by two methods, the transmittance of CdS thin films prepared by vacuum evaporation deposition above the CdS thin films prepared by Chemical bath deposition. Finally, Al electrode of a certain thickness was prepared by DC-magnetron sputtering, then CIGS thin-film solar cells were prepared completely. The solar cells have a certain open-circuit voltage aboat30-40mv by testing the device performance. The whole technology of CIGS cells is simple, economical, and without using of toxic gases. It could easily be scaled up or integrated into a commercial process.

Related Dissertations

  1. LSGM electrolyte thin films and electrochemical properties of,TM911.4
  2. Research on CIGS Thin-Film Solar Cell Made by Magnetron Sputtering,TM914.4
  3. The Study of Hemocompatibility of Fluorinated Diamond-like Carbon Films,R318.08
  4. The Microwave Properties of c-axis Oriented BaFe12O19 Films Sputtered on Pt-buffered Silicon Substrates,TM277
  5. Measurement the Ion Density and Energy of Plasma in Magnetron Sputtering Filming,TG174.4
  6. Preparation and Characterization of SiC Films and Nanowires,TB383.2
  7. Study on the Performance of Auxiliary Anode in the High-energy Ion Beam Sputtering Coating Machine,TG174.4
  8. Synthesis and Characterization of BiFeO3/La0.7Sr0.3Mo3 Multi-layer Film,TB383.2
  9. Magnetic Field Optimization and Erosion Simulation of Circle Planar Magnetron Sputtering Target,TG174.4
  10. Research on ZnO Film Preparation and Its Property by Radio Frequency Magnetron Sputtering,TN321.5
  11. Novel Composite TCO Transparent Conductive Films,TB383.2
  12. Studies on Hard Films of Stainless Steel by Magnetron Sputtering,TG174.44
  13. Study on Ceramic Core Printed Circuit Board for Power LED,TN41
  14. Two-dimensional Tunable Bandgap Photonic Crystals Based on VO2 Phase Transition,O734
  15. DC Magnetron Sputtering Power-supply with Limited Double-polarity Parallel Reseach,TN86
  16. Study on Preparation and Properties of P-type ZnMgO:In-N Film,O484.4
  17. Magnetron sputtering Al 2 O 3 transition and properties of ZnO films,O484.1
  18. Investigations on the Growth and Optical Properties of Cu Doped ZnO Films,O484.1
  19. Transparent Conductive ZnO Thin Films Co-doped with H and Al,TB383.2
  20. Photocatalysis Study of Cu2 O/TiO2 Composite Film Prepared by Direct Current Reactive Magnetron Sputtering,O643.36
  21. PMMA dielectric layer indium zinc oxide thin film transistors and Research,TN321.5

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