Neslihan Yağmur
25.01.2013
Nanocomposites for Energy
Application
1
INTRODUCTION
2
What is Nanocomposite ?
3
 Composite materials made from two or more
constituent materials with significantly different
p...
4
Nanocomposites for Solar
Energy Storage
Nanocomposites for Solar Energy
Storage
 Electron donor and electron acceptor
materials is used rather
than semiconductor...
• PCBM: [6,6]phenyl-C61-butyric acid methyl ester, acceptor
• P3HT: Poly(3-hexylthiophene), donor
Electron Acceptor and Do...
Electron Acceptor and Donor
P3HT
PCBMITO
Al
3.7 eV
5.1 eV
Light
• Photon
absorption, excitons are
created
• Excitons diffu...
Electron Acceptor and Donor
P3HT
PCBMITO
Al
3.7 eV
5.1 eV
• Charge separation
due to electric fields
at the interface.
• S...
Nanocomposites for Solar Energy
Storage
9
 There are two ways for fabricating devices.
1. Organic donor- Inorganic accept...
10
Organic donor- Inorganic acceptor
First Type
11
 The first structure is the inorganic–organic.
 A nanoporous metal oxide substrate is used as
an acceptor....
Inorganic Materials as Acceptor
12
1) Carbon Nanotubes
2) ZnO Nanorod or Nanowires
3) TiO2 Nanorods or Nanowires
Carbon Nanotubes
13
 Nanotubes are
cylindrical fullerenes.
These tubes of
carbon are usually
only a few
nanometres wide, ...
Advantages of Inorganic
Materials
14
 To improve photovoltaic efficiency
 To extend the photovoltaic response into the n...
15
Organic donor – Organic acceptor
Second Type
16
 The second type of structure is made of a
polymer/polymer or nanoparticles blend, which
allows easy thin ...
17
Solar Cells Based on Poly(3-
butylthiophene)
Nanowires
Solar Cells Based on Poly(3-butylthiophene)
Nanowires
18
 Suitable poly(3-alkylthiophene) nanowires useful in
the composi...
Solar Cells Based on Poly(3-butylthiophene) Nanowires
Chemical structures of P3BT and C61-PCBM.
Schematic illustration of ...
Highly Efficient Solar Cells Based on Poly(3-
butylthiophene)
Nanowires
20
 TEM (a) and AFM (b) images of P3BT-nw/C61-PCB...
References
•N., Thien-Phap, Surface & Coatings
Technology, Polymer-based nanocomposites for organic
optoelectronic devices...
22
Thank You for Your Attention
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Nanocomposites for energy application

Published on: Mar 3, 2016
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Transcripts - Nanocomposites for energy application

  • 1. Neslihan Yağmur 25.01.2013 Nanocomposites for Energy Application 1
  • 2. INTRODUCTION 2
  • 3. What is Nanocomposite ? 3  Composite materials made from two or more constituent materials with significantly different physical or chemical properties, that when combined, produce a material with characteristics different from the individual components. If the size of at least one of the component constituent is nanometric then the composite is nanocomposite. http://www.rsc.org/Publishing/Journals/cp/article. asp
  • 4. 4 Nanocomposites for Solar Energy Storage
  • 5. Nanocomposites for Solar Energy Storage  Electron donor and electron acceptor materials is used rather than semiconductor p-n junctions.  Blending the donor and acceptor phases together to obtain a nanocomposite material. 5
  • 6. • PCBM: [6,6]phenyl-C61-butyric acid methyl ester, acceptor • P3HT: Poly(3-hexylthiophene), donor Electron Acceptor and Donor PCBM P3HT P3HT PCBMITO Al 3.7 eV 5.1 eV LUMO HOMO
  • 7. Electron Acceptor and Donor P3HT PCBMITO Al 3.7 eV 5.1 eV Light • Photon absorption, excitons are created • Excitons diffusion to an interface
  • 8. Electron Acceptor and Donor P3HT PCBMITO Al 3.7 eV 5.1 eV • Charge separation due to electric fields at the interface. • Separated charges travel to the electrodes.
  • 9. Nanocomposites for Solar Energy Storage 9  There are two ways for fabricating devices. 1. Organic donor- Inorganic acceptor 2. Organic donor – Organic acceptor
  • 10. 10 Organic donor- Inorganic acceptor
  • 11. First Type 11  The first structure is the inorganic–organic.  A nanoporous metal oxide substrate is used as an acceptor.  Polymeric material is used as a donor.
  • 12. Inorganic Materials as Acceptor 12 1) Carbon Nanotubes 2) ZnO Nanorod or Nanowires 3) TiO2 Nanorods or Nanowires
  • 13. Carbon Nanotubes 13  Nanotubes are cylindrical fullerenes. These tubes of carbon are usually only a few nanometres wide, but they can range from less than a micrometer to several millimeters in length. http://en.wikipedia.org/wiki/Fullerene#Carbon_nanotubes
  • 14. Advantages of Inorganic Materials 14  To improve photovoltaic efficiency  To extend the photovoltaic response into the near infrared.
  • 15. 15 Organic donor – Organic acceptor
  • 16. Second Type 16  The second type of structure is made of a polymer/polymer or nanoparticles blend, which allows easy thin film deposition and an intimate mixing of donor and acceptor.  The most popular and efficient composite is the bulk heterojunction polymer/ fullerene (PCBM) material, which is based on P3HT as a donor and a soluble fullerene derivative (PCBM) as an acceptor.
  • 17. 17 Solar Cells Based on Poly(3- butylthiophene) Nanowires
  • 18. Solar Cells Based on Poly(3-butylthiophene) Nanowires 18  Suitable poly(3-alkylthiophene) nanowires useful in the composites of the invention include 1) poly(3-methylthiophene), 2) poly(3-ethylthiophene), 3) poly(3-propylthiophene), 4) poly(3-butylthiophene), 5) poly(3-pentylthiophene), 6) poly(3-hexylthiophene), 7) poly(3-heptylthiophene), 8) poly(3-octylthiophene), 9) poly(3-nonylthiophene), 10) poly(3-decylthiophene) nanowires. http://www.igm.uni- stuttgart.de/forschung/arbeitsgebiete/organische_elektronik
  • 19. Solar Cells Based on Poly(3-butylthiophene) Nanowires Chemical structures of P3BT and C61-PCBM. Schematic illustration of nanowire network of P3BT/PCBM composites.19 •D., Olson, Y., Ju Lee, Effect of Polymer Processing on the Performance of Poly(3-hexylthiophene)/ZnO Nanorod Photovoltaic Devices, 2007, 16640-16645
  • 20. Highly Efficient Solar Cells Based on Poly(3- butylthiophene) Nanowires 20  TEM (a) and AFM (b) images of P3BT-nw/C61-PCBM nanocomposites. •D., Olson, Y., Ju Lee, Effect of Polymer Processing on the Performance of Poly(3-hexylthiophene)/ZnO Nanorod Photovoltaic Devices, 2007, 16640-16645
  • 21. References •N., Thien-Phap, Surface & Coatings Technology, Polymer-based nanocomposites for organic optoelectronic devices, 2011, 742–752 •D., Olson, Y., Ju Lee, Effect of Polymer Processing on the Performance of Poly(3-hexylthiophene)/ZnO Nanorod Photovoltaic Devices, 2007, 16640-16645 •N., Henry, Polymer Nanocomposite Analysis and Optimization for Renewable Energy and Materials, University of Tennessee, 2011 21
  • 22. 22 Thank You for Your Attention