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research in NCL is targeted towards printed solar cells.
We develop technologies for ink fabrication of solar
cells and explore the science behind it. There are two
groups in the lab working on:
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Solution Processed
CIGS and CZTS Solar Cells
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CIGS solar cells are an established class
of solar cells which are commercially available through
vacuum based fabrication technologies. Our effort is to
develop ink-based techniques for low-cost, efficient
solar cells. We have already developed inks for high
quality CIGS deposition, stable ZnO nanoparticles for
uniform, low-temperature ZnO deposition, different
carbon pastes, graphene and GO inks, Ag nanowire
dispersions for TCF coating, and Au or Ag inks.
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Besides we have started CZTS solar cells
which are structurally very close to CIGS cells. Our
target is to fabricate CZTS devices using ink-based
methods and improve their efficiency by controlling the
defects.
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Perovskite Solar Cells
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For perovskite solar cells, there are two
main targets we follow:
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Stability:
This is one of the main challenges of perovskite solar
cells. Perovskite layers are especially sensitive to
humidity and heat. We mainly work on replacing the
unstable materials with more stable inorganic
materials.
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Scale-up:
Our effort is to develop methods for all ink-based
deposition methods. These include, for instance,
developing slot-die printing methods, low temperature
ETL layers and printing metal electrodes.
