Electrolytes in Dye-Sensitized Solar Cells

The potential of room-temperature molten salts (ionic liquids) as solvents for electrolytes for dye-sensitized solar cells has been investigated during the last decade. The non-volatility, good solvent properties and high electrochemical stability of ionic liquids make them attractive solvents in contrast to volatile organic solvents. Despite this, the relatively high viscosity of ionic liquids leads to mass-transport limitations. Here we review recent developments in the application of different ionic liquids as solvents or components of liquid and quasi-solid electrolytes for dye-sensitized solar cells.

Ionic liquid electrolytes for dye-sensitized solar cells.

Amazon Photochemistry of Polypyridine and Porphyrin Complexes.The second part deals with rutheniumII polypyridyl complexes linked. Photochemistry of Polypyridine and Porphyrin Complexes Academic Press.A series of RuII complexes were synthesized pdf417 activex crack with the deprotonated forms of. Ruthenium coordination compounds containing polypyridyl ligands. Photochemistry and Photobiology, 2010, 86: 12301236.

Photochemistry of polypyridine and porphyrin complexes

Comparison of the dye-sensitized solar cells performances based on transparent conductive ITO and FTO

PROBLEM TO BE SOLVED: To provide a colored curable resin composition which is used for forming a color filter, that is incorporated in a liquid crystal display device, a solid-state image pickup element or the like, and which contains a dye having high heat resistance.SOLUTION: A dye compound comprises: a dye cation shown by formula (A-VI) (in which R-Rare each H, a halogen atom, an alkyl group or the like, independently;R-Rare each H, a substituted/unsubstituted alkyl group, independently;it does not matter if Rand Rand/or Rand Rare bonded to one another to form a ring together with a nitrogen atom;A is a substituted/unsubstituted aromatic group or a substituted/unsubstituted heteroaromatic group); and an anion having boron or aluminum and two or more reactive groups in one molecule thereof. The colored curable resin composition contains the dye compound.

Colored curable resin composition

We have synthesized three kinds of titanylphthalocyanines with different crystal structures (TiOPcs; PcT2oooR, PcT3000R, and PcT1100S) and analyzed their crystal structure by X-ray Diffraction (XRD), Fourier transfer IR (FT-IR) spectroscopy, and Transmission Electron Microscope (TEM) From experimental results, we have confirmed that PcT200oR was estimated to be alpha-form; PcT3000R was beta-form, and PcT1100S was gamma-form Quasi-solid state dye-sensitized solar cell (DSSC) devices were prepared with a polymer electrolyte using TiOPcs as a co-adsorbent The DSSC device using TiOPc has higher power conversion efficiency than without TiOPc, due to decrease of electron transfer distance by the interface adsorption between TiO 2 film and polymer electrolyte Also, we have studied the effects of the crystal structures of TiOPcs on the property of polymer electrolyte and the performance of the DSSC device The best result on power conversion efficiency was 713% in DSSC device using PcT3000R having its highest stability The open-circuit voltage (V oc ) was 069 V, the short-circuit current density (j sc ) was 2002 mA/cm 2 , and the Fill Factor (FF) was 052 the addition of TiOPc as co-adsorbent is useful for improve to the performances of DSSC devices such as V oc , J sc , and power conversion efficiency

Effects of nanocrystalline porous TiO2 films on interface adsorption of phthalocyanines and polymer electrolytes in dye-sensitized solar cells

We have synthesized soluble TiOPc derivatives containing alkoxy groups for use as additives in dye-sensitized solar cells (DSSCs). The DSSC devices containing these TiOPc derivatives exhibited short-circuit current densities of 8.49~10.04 mA/cm2 and power conversion efficiencies of 2.73~3.62 % under AM 1.5 illumination and 100 mW/cm2 irradiation.

Synthesis, Characterization, and Photovoltaic Properties of Soluble TiOPc Derivatives

Disclosed are a salt comprising, as cation, at least one cationic cyanine compound, and, as anion, at least one anionic xanthene compound, as well as its use in color filters, e.g. for displays, and its preparation process. The salt of the present invention provides improved characteristics, especially in terms of a thermal stability and/or brightness.

A salt for color filter application, a process for making the same, and a colorant comprising the same

New TiO2 pastes for the fabrication of TiO2 electrodes at low temperature were prepared from a TiO2 nanoparticle colloidal solution including Ti-alkoxide precursors. In addition, TiO2 pastes comprising 123 nm and 200 nm TiO2 particles used as scattering particles were prepared. Single and double layered TiO2 electrodes were deposited onto an ITO-PEN film by the doctor-blade method and subsequently sintered at 140°C and used to fabricate flexible Dye-sensitized Solar Cells (DSSCs). Due to the light scattering effect in the double layered TiO2 electrode, the Jsc and efficiency of the flexible DSSCs were greatly enhanced.

Preparations and Characterizations of TiO2 Pastes for Flexible Dye-Sensitized Solar Cells

A phthalocyanine compound for solar cells is provided to improve power switching efficiency and photoelectric performance. An electrolyte includes a phthalocyanine compound having the following chemical expression X-MOc-(R)n where Pc is phthalocyanine moeity, M is a metal selected from a group including Cu, Fe, Ni, Co, Mn, Al, Pd, Sn, In, Ti, Rb, V, Ga, terbium, Cs, La, and Zn, X is absent or -OH or =O, R is independently selected from H, alkyl, cyclic-alkyl, aryl-alkyl, hydroxy-alkyl, amino, alkyl-amino, alkoxy, alkyltio, aryl, aryl-oxy, aryl-tio, halogen, and hydroxy groups. The phthalocyanine compound has a crystalline structure which is selected from a gamma type, an alpha type, and a beta type.

Kisuck Jung

Papers

Effects of nanocrystalline porous TiO2 films on interface adsorption of phthalocyanines and polymer electrolytes in dye-sensitized solar cells

Synthesis, Characterization, and Photovoltaic Properties of Soluble TiOPc Derivatives

A salt for color filter application, a process for making the same, and a colorant comprising the same

Preparations and Characterizations of TiO2 Pastes for Flexible Dye-Sensitized Solar Cells

A phthalocyanine compound for solar cells