2 research outputs found
Accurate Potentials of Hg/HgO Electrodes: Practical Parameters for Reporting Alkaline Water Electrolysis Overpotentials
Accurate Potentials
of Hg/HgO Electrodes: Practical
Parameters for Reporting Alkaline Water Electrolysis Overpotential
Highly Efficient Bifacial Dye-Sensitized Solar Cells Employing Polymeric Counter Electrodes
Dye-sensitized
solar cells (DSCs) are promising solar energy conversion
devices with aesthetically favorable properties such as being colorful
and having transparent features. They are also well-known for high
and reliable performance even under ambient lighting, and these advantages
distinguish DSCs for applications in window-type building-integrated
photovoltaics (BIPVs) that utilize photons from both lamplight and
sunlight. Therefore, investigations on bifacial DSCs have been done
intensively, but further enhancement in performance under back-illumination
is essential for practical window-BIPV applications. In this research,
highly efficient bifacial DSCs were prepared by a combination of electropolymerized
poly(3,4-ethylenedioxythiphene) (PEDOT) counter electrodes (CEs) and
cobalt bipyridine redox ([Co(bpy)<sub>3</sub>]<sup>3+/2+</sup>) electrolyte,
both of which manifested superior transparency when compared with
conventional Pt and iodide counterparts, respectively. Keen electrochemical
analyses of PEDOT films verified that superior electrical properties
were achievable when the thickness of the film was reduced, while
their high electrocatalytic activities were unchanged. The combination
of the PEDOT thin film and [Co(bpy)<sub>3</sub>]<sup>3+/2+</sup> electrolyte
led to an unprecedented power conversion efficiency among bifacial
DSCs under back-illumination, which was also over 85% of that obtained
under front-illumination. Furthermore, the advantage of the electropolymerization
process, which does not require an elevation of temperature, was demonstrated
by flexible bifacial DSC applications