1 research outputs found
Flexible, Low Cost, and Platinum-Free Counter Electrode for Efficient Dye-Sensitized Solar Cells
A platinum-free
counter electrode composed of surface modified aligned multiwalled
carbon nanotubes (MWCNTs) fibers was fabricated for efficient flexible
dye-sensitized solar cells (DSSCs). Surface modification of MWCNTs
fibers with simple one step hydrothermal deposition of cobalt selenide
nanoparticles, confirmed by scanning electron microscopy and X-ray
diffraction, provided a significant improvement (∼2-times)
in their electrocatalytic activity. Cyclic voltammetry and electrochemical
impedance spectroscopy suggest a photoelectric conversion efficiency
of 6.42% for our modified fibers, higher than 3.4% and 5.6% efficeincy
of pristine MWCNTs fiber and commonly used Pt wire, respectively.
Good mechanical and performance stability after repeated bending and
high output voltage for in-series connection suggest that our surface
modified MWCNTs fiber based DSSCs may find applications as flexible
power source in next-generation flexible/wearable electronics