Dye-sensitized solar cell performance

S. Yoshikawa, S. Pavasupree, J. Jitputti, S. Ngamsinlapasathian, Hydrothermal synthesis, characterization, photocatalytic activity and dye-sensitized solar cell performance of mesoporous anatase Ti02 nanopowders . Materials Research Bulletin, 43,149-157, (2008). 

Docampo P, Guldin S, Stefik M, Tiwana P, Orilall MC, Hiittner S, Sai H, Wiesner U, Steiner U, Snaith HJ (2010) Control of solid-state dye-sensitized solar cell performance by block-copolymer-directed Ti02 synthesis. Adv Funct Mater 20 1787-1796... 

Haid S, Marszalek M, Mishra A et al (2012) Significant improvement of dye-sensitized solar cell performance by small structural modification in Jt-conjugated donor-acceptor dyes. Adv Funct Mater 22(6) 1291-1302... 

Ruble S, Cahen D (2004) Electron tuimeling at the Ti02/substrate interface can defimnine dye-sensitized solar cell performance. J Phys Chem B 108(46) 17946-17951... 

Labat F, Ciofini I, Hratchian HP, Frisch M, Raghavachari K, Adamo C (2009) First principles modeling of eosin-loaded ZnO films a step toward the understanding of dye-sensitized solar cell performances. J Am Chem Soc 131(40) 14290-14298... 

The modulation of photophysical properties and dye lifetime that result from ring fluorination can lead beneficial effects for dye-sensitized solar cell performance. A straightforward comparison of photoelectric activity of these cells in which meso-substituted porphyrins featuring variable fluorine and chlorine substitution was published recently [115]. However, the results from this study indicated that chlorine substitution provided an enhanced photocurrent output in comparison to the corresponding fluorinated derivatives. 

Kondo, Y., Yoshikawa, H., Awaga, K., Murayama, M., Mori, T., Sunada, K., Bandow, S and lijima, S. (2008) Preparation, photocatalytic activities, and dye-sensitized solar-cell performance of submicron-scale Ti02 hollow spheres. Langmuir, 24,547-550. 

Pavasupree S, Ngamsinlapasathian S, Nakajima M, Suzuki Y, Yoshikawa S (2(X)6) Synthesis, characterization, photocatalytic activity and dye-sensitized solar cell performance of nanorods/nanoparticles Ti02 with mesoporous structure. J Photochem Photobio A 184(1-2) 163-169. doi 10.1016/j.jphotochem.2006.04.010... 

Dye Sensitized Solar Cell Performance in Relation Electron-Cation Recombination and Sensitizer Binding Geometry... 

Zukalova, M. Zukal, A. Kavan, L. Nazeeruddin, M. K. Liska, P Gratzel, M. 2005. Organized mesoporous Ti02 films exhibiting greatly enhanced performance in dye-sensitized solar cells. Nano Lett. 5 1789-1792. 

Scientific interest in nanocarbon hybrid materials to enhance the properties of photocatalysts and photoactive electrodes has been growing rapidly [1-8]. The worldwide effort to find new efficient and sustainable solutions to use renewable energy sources has pushed the need to develop new and/or improved materials able to capture and convert solar energy, for example in advanced dye-sensitized solar cells - DSSC (where the need to improve the photovoltaic performance has caused interest in using nanocarbons for a better cell design [9,10]) or in advanced cells for producing solar fuels [11-13]. 

B. W., Effect of carbon modification on the electrical, structural, and optical properties of Ti02 electrodes and their performance in labscale dye-sensitized solar cells. Int.J. Photoenergy 2012, 904323/1-9. 

Metallic or Semiconducting Single-Walled Carbon Nanotubes Which Gives the Best Performance for a Dye-Sensitized Solar Cell. ChemPhysChem 2012,13 2566-25Z2. 

DSSCs efficiencies up to 10.4%8 have been reported for devices employing nanocrystalline Ti02 films. Several studies have addressed the use of alternative metal oxides including SnCU,9 10 ZnO,11,12 and Nb205.13 The performance of dye-sensitized solar cells can be understood in view of the kinetic competition among the various redox processes involved in the conversion of light into electricity. Ultrafast electron injection (k2) has been observed in the femtosecond-picosecond (10 l5-... 

The other important aspect in dye-sensitized solar cells is water-induced desorption of the sensitizer from the surface. Extensive efforts have been made in our laboratory to overcome this problem by introducing hydrophobic properties in the ligands (48-53). The photocurrent action spectra of these complexes shows broad features covering a large part of visible spectrum and displays a maxima around 550 nm, where the monochromatic IPCE exceeds 80%. The performance of these hydrophobic complexes as charge-transfer photosensitizers in nanocrys-... 

Effect of TiOz Films on Performance of Dye-sensitized Solar Cells... 

The solar to electric power conversion efficiency of dye-sensitized solar cells of laboratory scale (0.158 cm2), validated by an accredited photovoltaic calibration laboratory, has reached 11.1% under standard reporting conditions, i.e., air mass 1.5 global sunlight at 1000 Wm-2 intensity and 298 K temperature, rendering it a credible alternative to conventional p-n junction photovoltaic devices [68]. Photovoltaic performance data obtained with a sandwich cell under illumination by simulated AM 1.5 solar light using complex 26 are shown in Fig. 16. At 1 sun the 26-sensitized solar cell exhibited 17.73 =b 0.5 mA current, 846 mV potential, and a fill factor of 0.75 yielding an overall conversion efficiency of 11.18%. 

MSP titania was also used to make electrodes, which were tested in a dye-sensitized solar cell [116]. The short-circuit photocurrent, open-circuit photovoltage and fill factor increased with increasing sintering temperature, having a performance threshold at 450 °C, showing that the more ordered structures are required for high solar cell conversion efficiencies. 

A composite material made of zinc oxide and polyvinyl alcohol was prepared by a sonochemical method [135]. Annealing of the composite under air removed the polymer, leaving porous spheres of ZnO. This change was accompanied by a change in the surface area from 2 to 34 m g k The porous ZnO particles were used as the electrode material for dye-sensitized solar cells (DSSCs). They were tested by forming a film of the doped porous ZnO on a conductive glass support. The performance of the solar cell is reported. 

Dye-Sensitized Cells Dye-sensitized solar cells (DSSCs) are slightly more complex than bilayer and bulk heterojunction cells, but as was the case for bilayer cells, the increase in device complexity reduces the number of functions that must be performed by each of the materials. A schematic drawing of a dye-sensitized solar cell is shown in Fig. 8.8. A layer of sintered, interconnected TiC>2 nanoparticles, which serves as the electron transport material (ETM), is coated by a thin layer of light absorbing dye. The remaining pores in the dye-coated TiC>2 layer are then filled with a... 

Tin oxide is an -1ype semiconductor with ca. 3.8 eV energy gap. It is the basic material commonly used in gas sensing, oxidative catalysis, photocatalysis, dye-sensitized solar cell and conductive glass. In order to enhance the performance of SnOa-based device, many studies have been focused on the synthesis of nanostructure Sn02-based materials with controllable microstructure, particle size and physico-chemical properties [1-6]. The sol-gel method was reported to be a simple and reproducible route for one-step synthesis of nanostructured... 

---