Graphene, carbon nanotube and ionic liquid mixtures: towards new quasi-solid state electrolytes for dye sensitised solar cells

2011 ◽  
Vol 21 (42) ◽  
pp. 16990 ◽  
Author(s):  
Iftikhar Ahmad ◽  
Umar Khan ◽  
Yurii K. Gun'ko
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
Carbon Nanotube ◽  
Solid State ◽  
Liquid Mixtures ◽  
Solid State Electrolytes

Investigation of PEO-Imidazole Ionic Liquid Oligomer and Polymer Electrolytes for Dye-Sensitized Solar Cells

2010 ◽  
Vol 451 ◽  
pp. 41-61 ◽  
Author(s):  
Yuan Lin ◽  
Maio Wang ◽  
Xu Rui Xiao
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Liquid Electrolyte ◽  
Lithium Iodide ◽  
Liquid Polymer ◽  
Dye Sensitized ◽  
Solid State Electrolytes ◽  
Sensitized Solar Cells

Ionic liquid oligomer, 1-oligo(ethyleneoxide)-3-methylimidazolium salt　(PEO(X)MIm) and Ionic liquid polymer, poly(1-oligo (ethylene glycol) methacrylate-3-methylimidazolium) salt (P(MOEMIm)) prepared by incorporating imidazolium ionic liquid with PEO oligomer and polymer were investigated as electrolytes for dye-sensitized solar cells (DSCs). Ionic liquid electrolytes were composed of LiI, I2, and PEO(X)MImCl or the mixture of 1-hexyl-3-methylidazolium iodide (HMImI), 1-ethyl-3-methylimidazolium tetrafluoroborate (EMImBF4) and PEO(X)MImCl. Quasi-solid-state electrolytes were prepared by employing the imidazole polymers P(MOEMImCl) to solidify the liquid electrolyte containing lithium iodide, iodine and ethylene carbonate (EC)/propylene carbonate (PC) mixed solvent. Ionic liquid based quasi-solid state electrolytes were prepared by solidifying the ionic liquid electrolytes containing HMImI or a binary mixture of HMImI and EMImBF4 with an ionic liquid polymer P(MOEMImCl), respectively. The influences of PEO molecular weight, polymer content, addition of alkyl ionic liquid and various anions of the ionic liquid oligomers and polymer on the ionic conductivity, apparent diffusion coefficient of the redox species in the electrolytes and the performance of solar cells were examined. The influences on the kinetic behaviors of dye regeneration and triiodide reduction reactions taken place at nanocrystalline TiO2 electrode and Pt counter-electrode, respectively, were also studied by cyclic-voltammetry and electrochemical impedance spectroscopy measurements. By using ternary ionic liquid electrolyte containing 1M lithium iodide and 0.5M iodine in the ionic liquid of the ionic liquid mixture of PEO(X)MImCl), HMImI and EMImBF4, quasi-solid-state electrolytes and ionic liquid based quasi-solid state electrolytes the photoelectron conversion efficiency of DSCs is 7.89%, 7.6% and 6.1%, respectively(AM 1.5, 100mWcm−2). These results show the potential application of PEO based ionic liquid in SCs.

Graphene Nanoparticles Decorated Silicon Nanowires with Tungsten Oxide Counter Electrode for Quasi-Solid State Hybrid Solar Cells

2021 ◽  
Author(s):  
Ankita Kolay ◽  
Manoranjan Ojha ◽  
Melepurath Deepa
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
Solid State ◽  
Tungsten Oxide ◽  
Silicon Nanowires ◽  
Counter Electrode ◽  
Near Infrared ◽  
Hybrid Solar Cells ◽  
Functionalized Graphene ◽  
Graphene Nanoparticles

Anchoring ionic liquid functionalized graphene nanoparticles (IL-GNP) to silicon nanowires (SiNW) improves the solar spectral utilization from visible to near infrared (NIR). Due to the bandgap of IL-GNP in the...

scholarly journals Carbon nanotube film replacing silver in high-efficiency solid-state dye solar cells employing polymer hole conductor

2015 ◽  
Vol 19 (10) ◽  
pp. 3139-3144 ◽  
Author(s):  
Kerttu Aitola ◽  
Jinbao Zhang ◽  
Nick Vlachopoulos ◽  
Janne Halme ◽  
Antti Kaskela ◽  
...  
Keyword(s):  
Solar Cells ◽  
Carbon Nanotube ◽  
Solid State ◽  
High Efficiency ◽  
Carbon Nanotube Film ◽  
Dye Solar Cells
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