One step hydrothermal synthesis of vertical Ni-Mo-S nanosheet array as the counter electrode for FDSC

Carbon Fibers Coated with Ternary Ni–Co–Se Alloy Particles as a Low-Cost Counter Electrode for Flexible Dye Sensitized Solar Cells

“…In J – V measurements, some curves have current densities first increasing and then decreasing with larger voltage applied. This is also observed in other works: for example, Figures 3 and 5a in Hong and Lin’s article, Figures 3 and 4 in Xiao and Lin’s work, Figure 2j in Wang et al’s paper, and Figure 4 in Yang et al’s study . FDSSCs from all above-mentioned works have very similar device architecture: photoanode with nanostructured TiO 2 , iodine-based electrolyte, and transparent capillary sealing.…”

“…In J−V measurements, some curves have current densities first increasing and then decreasing with larger voltage applied. This is also observed in other works: for example, Figures 3 and 5a in Hong and Lin's article, 17 31 FDSSCs from all above-mentioned works have very similar device architecture: photoanode with nanostructured TiO 2 , iodine-based electrolyte, and transparent capillary sealing. The trend in J−V curves shown in this work as well as above literatures might be related to device fabrication, while further investigation is needed to study the phenomena; however, this is beyond the scope of this work.…”

“…30 Yang et al used a Ni−Mo−S nanosheet on Ti wire as CE, and the PCE of the device was 6.3%. 31 The highest PCE achieved by far based on Pt-free counter electrode (10.28%) was reported by Zhang et al; their group used Co 0.85 Se nanosheets on polyaniline-functionalized CFs. 32 In the above-mentioned examples, a higher PCE of the device could be achieved by coating a conductive polymer layer on the carbon-based counter electrode 29,32 and/or by using transition metal chalcogenides.…”

“…Wang et al also adopted PEDOT:PSS on polytetra­fluoroethylene (PTFE) substrate as CE, and the highest PCE achieved by the result FDSSC was 8.2% . Yang et al used a Ni–Mo–S nanosheet on Ti wire as CE, and the PCE of the device was 6.3% . The highest PCE achieved by far based on Pt-free counter electrode (10.28%) was reported by Zhang et al; their group used Co 0.85 Se nanosheets on polyaniline-functionalized CFs …”