Enhanced conversion efficiency in dye-sensitized solar cells based on bilayered nano-composite photoanode film consisting of TiO2 nanoparticles and nanofibers.

Enhanced conversion efficiency in dye-sensitized solar cells based on bilayered nano-composite photoanode film consisting of TiO2 nanoparticles and nanofibers.

Journal of nanoscience and nanotechnology (2014-04-18)

P F Du, L X Song, J Xiong

ABSTRACT

Novel TiO2 nanoparticles/nanofibers (NPs/NFs) bilayered nano-composite photoanode film for dye-sensitized solar cells (DSSCs) was fabricated through the combination of spin-coating and electrospinning. The NPs and NFs layers have complementary roles. The underlaid spin-coated NPs layer provides the photoanode film with higher specific surface area for dye adsorption and improved adhesion to conductive glass substrate. The overlaid electrospun NFs layer endows the photoanode film with better dye-loading and light-harvesting capabilities due to its porous meshwork structure. And the NFs layer also offers larger pore volume, which can facilitate the electrolyte diffusion and the activity regeneration of dye sensitizers. As a result, the electron transport is accelerated while the charge recombination is suppressed. Ascribing to the synergic effect of the NPs and NFs layers, the TiO2 NPs/NFs-based DSSCs achieve a conversion efficiency of 4.46%, which is nearly 14% higher than that of the pure TiO2 NPs-based ones.

MATERIALS

Product Number

Brand

Product Description

GF52005596

Titanium, tube, 500mm, outside diameter 9.5mm, inside diameter 8.2mm, wall thickness 0.65mm, annealed, 99.6+%

GF51463357

Titanium, tube, 200mm, outside diameter 10.3mm, inside diameter 8.7mm, wall thickness 0.8mm, annealed, 99.6+%

GF58567067

Titanium, rod, 100mm, diameter 5mm, annealed, 99.6+%

GF54883581

Titanium, rod, 1000mm, diameter 3.0mm, annealed, 99.6+%

GF56868766

Titanium, wire reel, 25m, diameter 1.0mm, annealed, 99.6+%

GF41437830

Titanium, tube, 100mm, outside diameter 1.05mm, inside diameter 0.75mm, wall thickness 0.15mm, annealed, 99.6+%

GF91859967

Titanium, rod, 100mm, diameter 9.5mm, annealed, 99.99+%

GF98611623

Titanium, rod, 200mm, diameter 8.0mm, as drawn, 99.99+%

GF71783354

Titanium, wire reel, 100m, diameter 0.75mm, as drawn, 99.6+%

GF13900205

Titanium, tube, 100mm, outside diameter 0.51mm, inside diameter 0.35mm, wall thickness 0.08mm, annealed, 99.6+%

GF26602321

Titanium, tube, 500mm, outside diameter 25.4mm, inside diameter 23.62mm, wall thickness 0.89mm, annealed, 99.6+%

GF72193114

Titanium, tube, 500mm, outside diameter 2.03mm, inside diameter 1.63mm, wall thickness 0.2mm, annealed, 99.6+%

GF69259315

Titanium, rod, 500mm, diameter 6mm, annealed, 99.6+%

GF17705516

Titanium, rod, 200mm, diameter 3.0mm, annealed, 99.6+%

GF46132534

Titanium, wire reel, 100m, diameter 0.25mm, as drawn, 99.6+%

GF35061083

Titanium, tube, 200mm, outside diameter 6.35mm, inside diameter 5.53mm, wall thickness 0.41mm, annealed, 99.6+%

GF65336700

Titanium, rod, 200mm, diameter 2mm, annealed, 99.6+%

GF05438066

Titanium, tube, 1000mm, outside diameter 1.6mm, inside diameter 1.2mm, wall thickness 0.2mm, hard, 99.6+%

GF14377631

Titanium, wire reel, 25m, diameter 0.25mm, annealed, 99.6+%

GF43403431

Titanium, wire reel, 500m, diameter 0.20mm, annealed, 99.6+%

GF55775975

Titanium, wire reel, 25m, diameter 0.25mm, as drawn, 99.6+%

GF95731960

Titanium, tube, 500mm, outside diameter 3.0mm, inside diameter 1.5mm, wall thickness 0.75mm, annealed, 99.6+%

GF61322699

Titanium, rod, 100mm, diameter 2mm, annealed, 99.6+%

GF94150593

Titanium, wire reel, 10m, diameter 1.5mm, as drawn, 99.6+%

GF96391402

Titanium, wire reel, 25m, diameter 0.20mm, annealed, 99.6+%

GF76266423

Titanium, wire reel, 0.5m, diameter 1.0mm, annealed, 99.6+%

266035

Sigma-Aldrich

Titanium, wire, diam. 1.0 mm, 99.99% trace metals basis

635057

Sigma-Aldrich

Titanium(IV) oxide, rutile, <001>, (single crystal substrate), ≥99.9% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm

460400

Sigma-Aldrich

Titanium, wire, diam. 0.25 mm, 99.7% trace metals basis

369489

Sigma-Aldrich

Titanium, foil, thickness 2.0 mm, 99.7% trace metals basis