Dissertation > Excellent graduate degree dissertation topics show

The Molecular Engineering of Diketopyrrolopyrrole-Based Sensitizer for Solar Cell Application

Author: ZhangFang
Tutor: ChenMingGong
School: Anhui University of Technology
Course: Thermal Power Engineering
Keywords: dye-sensitized solar cell organic dye DPP triarylamine
CLC: TM914.4
Type: Master's thesis
Year: 2013
Downloads: 13
Quote: 0
Read: Download Dissertation

Abstract


Dye-sensitized-solar-cells (DSCs), inspired by plant photosynthesis, is a new generation photovoltaic technology, owing to the potential advantages of low cost, easy production and flexibility relative to semiconductor photovoltaic cells. In this device, a monolayer of dye molecules are adsorbed on the surface of nanostructured TiO2as a sensitizer, generate electron-hole pair upon light illumination, and the electron transfers through TiO2while the hole transfers through an electrolyte used. As the sensitizer, dye is one of the key components for harvesting solar light in DSCs.In this paper, a series of organic dyes were prepared with an electron donor-π bridge-electron acceptor (D-π-A) structure, where diketopyrrolopyrrole (DPP) was employed as a bridge. The DPP has a uniquely planar conjugated bicyclic structure with an electron-withdrawing property, and its derivatives are extensively used as high-performance pigments due to the exceptional photochemical and thermal stability. Due to its electron-deficient planar bicyclic conjugation, DPP bridge in the D-π-A dye can effectively extend the dye absorption spectrum, enhance light harvesting ability in the solar spectrum, and improve photocurrent and device power conversion efficiency. Moreover, the DPP unit has multi-active sites, and can be modified with different functional groups to adjust their properties. In these D-π-A dyes, different triarylamine derivatives were employed as electron donor and acrylonitrile as electron acceptor. The main works are listed as follows:1, We utilized2,5-dioctyl-3,6-bis(4-bromophenyl)pyrrolo[3,4-c] pyrrole-1,4-dione as π-conjugated bridge, acrylonitrile as electron acceptor, triarylamine and bis(4-tert-butylphenyl)phenylamine respectively as electron donor, were designed dye--S1and dye-S2.2,We utilized3,6-bis(4-bromophenyl)-2,5-dihexylpyrrolo[3,4-c] pyrrole-1,4(2H,5H)-dione as π-conjugated bridge, acrylonitrile as electron acceptor, bis(4-tertbutylphenyl) phenylamine and4-(hexyloxy)-N-(4-(hexyloxy)-phenyl)-N-phenyl-aniline respectively as electron donor, were designed dye-Rland dye-R2.3,We utilized1,4-Diketo-2,5-di(2-ethylhexyl)-3,6-bis(4-bromophenyl) pyrrolo-[3,4-c]-pyrrole as π-conjugated bridge, acrylonitrile as electron acceptor, bis(4-tert-butylphenyl)phenylamine and4-(hexyloxy)-N-(4-(hexyloxy)-phenyl)-N- phenyl-aniline respectively as electron donor, were designed dye-Lland dye-L2.The DPP-based dyes were characterized for their physicochemical properties, and employed as sensitizers in DSCs. The structure-property relationship of the dyes was studied. All the dyes showed high power conversion efficiency as sensitizers in DSCs, in which L2-based DSC presented the best performance with Jsc16.34mA cm-2, Voc750mV, and fill factor (FF)0.74, corresponding to9.1%of power conversion efficiency under full sun (AM1.5,100mW cm-2).

Related Dissertations

  1. The Study of DPP’s Populist Style of Political Mobilization,D675.8
  2. DPP-IV inhibitors of the synthesis and activity of,R914
  3. Synthesis and Properties of Novel Organic Sensitizers Based on Indoline for Dye-Sensitized Solar Cells,TM914.4
  4. Novel Multi-triphenylamine Porphyrin Sensitizers for Dye-sensitized Solar Cells,TM914.4
  5. Research on Large-area Monolithic All-solid-state Dye-sensitized Solar Cell Module,TM914.4
  6. Application of LC-MS Based Assay in DPP-IV Inhibitor Screening and Respective Substrate Discovery,R96
  7. Study on the Carbon Counter Electrode Used in Dye-Sensitized Solar Cell,TM914.4
  8. Design, Synthesis and SAR Evaluation of New DPP-Ⅳ Inhibitors,R914
  9. Synthesis and Characterization of Light-emitting Polymers,TQ422
  10. The Performance of Metal Phthalocyanine in Dye-sensitized Solar Cell,TM914.4
  11. Studies on the Synthesis of Vildagiptin and Its Anologues as Dipeptidyl Peptidase Ⅳ Inhibitors,TQ463
  12. Synthesis and Photovoltaic Properties Research of Triphenyl Amine Dyes,TM914.4
  13. Investigation of Electron Transportand Back Reaction Mechanism of DSC,TM914.4
  14. Modification and Photoelectrochemical Research Based on Nanocrystalline TiO2 Photoanode,TM914.4
  15. Intramolecular Charge Transfer of Two Novel Dyes with DFT,O561
  16. Modification and Photoelectrochemical Research Based on Er/Nd-Boped TiO2 Photoanode,TM914.4
  17. Synthesis and Characterization of Sitagliptin and Piperazine Derivatives,R914
  18. Analysis of the Complete Sequence of Plasmid Isolated from Riemerella Anatipestifer Wide-type Strain and Construction of DPP Ⅳ Gene Deletion,S852.61
  19. The Separated Preparation and the Antidiabetic Active Study in Vitro of Total Flavonoids from Uraria Crinita,R285
  20. Study of Gel Polymer Electrolyte in Dye-Sensitized Solar Cell,TM914.4
  21. Study on Dyes-Sensitized Solar Cells Based on W-Doped TiO2 Nano-Particles,TM914.4

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