Dye-sensitized pv cellular Progress
Recently, the chinese language Academy of Sciences, Changchun Institute of used Chemistry of Polymer Physics and Chemistry, suggest essential Laboratory of Swiss researchers in cooperation with researchers and Wang Peng, the dye-sensitized photo voltaic cell review has produced essential progress, pertinent effects through the June 29 on the net concern inside the internationally renowned medical diary “Nature – Materials” (Nature Materials) on.
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Current dye-sensitized solar cells under test conditions in the air mass 1.5G power conversion efficiency has reached 11.1%, but this device is to use high-volatile, highly toxic cyanide electrolyte, greatly hindered the process actually used. Non-volatile at room temperature ionic liquids as to solve the problem program provides an important, but high viscosity ionic liquid, the Huodeqijian’s not efficient enough.
Peng and his collaborators through a variety of solid salt mixture to achieve the system by solid-liquid phase transition entropy to gain room temperature ionic liquids (China Patent Application No.: 200710306662.1). This greatly broadens the concept of a total of molten ionic liquid material selection. More importantly, based on these solid-state ionic materials with high lattice energy of molten liquid at room temperature ionic liquids than conventional lower viscosity and higher conductivity. To room temperature ionic liquids were prepared by melting the solar cell power conversion efficiency of 8.2%, setting a solvent-free dye-sensitized solar cells a world record in the device accelerated aging test conditions, exhibited excellent stability.
They also adopted the plan of ion mobility and viscosity of association, amendments toward the classical Stokes – Einstein equation, to clarify the three iodine ions within your ionic fluid at the same time to conventional actual physical diffusion transport, there are actual physical diffusion coupling electric trade mechanism. Also the 1st time they observed within your mesoporous conductor of electron transport from the relaxation of cations. This research will significantly market the versatile dye-sensitized photo voltaic cellular commercialization for easily transportable electric gadgets (such as cellular phones, audio tracks players, electronic cameras, laptops, etc.) to provide new energy. professional evaluation with this purpose was praised as “a breakthrough work.
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