2_blank_Polymer Solar Cell

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Polymers in Solar Cells
 Joshua
Hufford
 Bryan Orellana
 Yunchao Li
 McKay Barnett
 Sameh Mehrez
http://static.technorati.com/10/04/14/11757/solar-panels.jpg
Polymer Solar Cells
First Generation

Single crystal silicon
wafers
Second Generation

Polycrystalline silicon

Amorphous silicon
Single Crystal Silicon Wafer
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Third Generation


Nanocrystal solar cells
Polymer solar cells
Fourth Generation

Hybrid - inorganic crystals
within a polymer matrix
Polycrystalline Silicon
http://en.wikipedia.org/wiki/Solar_cell
State-of-the-Art!


Use of polymers (i.e. PPV – Polyphenylene
Vinylenes) with nanoparticles mixed
together to make a single multispectrum
layer
Inorganic hybrids that are used as the nano
particles:



CdSe
Titania (Titanium oxide)
This new form creates a more effective
transport for charges
State-of-the-Art!

Significant advances in hybrid solar cells have
followed the development of elongated
nanocrystal rodes and branched nano crystals



Increase surface area
Decreases resistance
Incorporation of larger nanostructures into
polymers require optimization of blend
morphology using solvent mixtures

Mayer, A.
This makes it easy to potentially make large rolls of
thin, flexible polymer solar cells
Where can you find Solar Cells?

Solar cells have many market
opportunities


Solar cells in space:


sustainable, reliable, and an economical
source of power
The international space station; four sets
of arrays, each one has 250,000 solar cells
that can power a small neighborhood.
Solar power plants in the Mojave
Desert


9 plants provides more power than what
Saudi Arabia produces from oil every day
Cleaner, and more sustainable compared
to oil.
Image taken from www.space.com
Where can you find Solar Cells?

The first solar powered airplane




Flew for 26 continuous hours.
It was powered by 12,000 solar cells on its
carbon fiber wings.
Powered solar vehicles
Residential roof solar panels.
Roadmap: Where are polymer
solar cells going?



Converting some of the heat for an overall
solar cell composite
More efficient and cheaper
Based on polymer solar cell and
heterojunction technology
Roadmap: Where are polymer
solar cells going?


Future advances will rely on new
nanocrystals, such as titania, to replace
fullerene derivatives.
Potential to enhance light absorption and
further improve charge transport.

Increase efficiency while getting away from all
organic solar cell polymers.
Conclusion



New innovations in polymeric materials and
other nanoparticles are allowing for cheaper
solar cells
Continued research will lead to more
efficient cells
Cost effective, sustainable, ease of
production, long lasting are key traits that
make this technology increasingly plausible
as a green replacement from present energy
resources.
References:

https://scifinder.cas.org/scifinder/view/scifinder/s
cifinderExplore.jsf

http://en.wikipedia.org/wiki/Solar_cell

Mayer, A., S. Scully, B. Hardin, M. Rowell, and M.
Mcgehee. "Polymer-based Solar Cells." Materials
Today 10.11 (2007): 28-33. Print.
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