Dye sensitization solar cell module

Abstract

A dye-sensitized solar cell module, which belongs to the field of photoelectric conversion device technology, comprises a first electrode and a second electrode arranged correspondingly, wherein the peripheries of the first and the second electrodes are sealed to form a sealed cavity, and the cavity is filled with electrolyte; a nano porous semiconductor thin film soaked with a photosensitive material is arranged on the side of the work region of the first electrode; a catalyst layer is arranged on the side of the work region of the second electrode; and at least one of the first and the second electrode is transparent. The sealed structure is characterized in that one or more pinholes are provided on at least one electrode and sealed at the periphery; and a working current is guided to the electrode from the pinholes. The invention can increase the effective working area of the solar cell and lower the permeable corrosion possibility of electrolyte by obviating the protection of a metal gate electrode, thus greatly improving the safety factor of the solar cell and widening the selection range of sealing materials.

Description

technical field [0001] The invention relates to a photoelectric conversion device, in particular to a dye-sensitized solar cell module. Background technique [0002] Dye-sensitized solar cells have attracted attention due to their simple structure, low cost and high photoelectric conversion efficiency. The dye-sensitized solar cell module in the prior art generally includes the following main parts: a first electrode composed of a nanoporous semiconductor film and a transparent conductive substrate that absorbs a photosensitizing dye, and a second electrode containing a catalytic layer that is opposite and spaced apart from it. An electrode, an electrolyte filled between the two electrodes, and a sealing material. The two electrodes include at least one transparent electrode to ensure the light absorption of the battery, and the transparent conductive substrate is usually conductive glass or flexible transparent conductive film. The electrolyte material is usually an organ...

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Problems solved by technology

The significant problems brought by this method include the following parts: First, a large number of grid electrodes and shielding layers prepared on the transparent substrate block the incidence of light, which greatly reduces the light utilization efficiency of the transparent electrode window; literature (large-area dye-sensitive Experimental research on chemical solar cells, Weng Jian / Xiao Shangfeng / Chen Shuanghong / Dai Songyuan, Acta Physica Sinica; 2007, Volume 56, Issue 6, 3602-3606) reported a 15×20cm battery module using the above structure, and its effective area is only 187.2cm 2 , the opening ratio of the window is only 62.4%; secondly, the shielding layer must cover the gate electrode metal completely and densely, and tiny flaws will cause penetrating corrosion of the gate electrode, leading to the failure of the entire battery module and making the battery The scrap rate is greatly increased; in addition, this method makes the internal structure of the battery complicated, which is not conducive to controlling the production cost of the battery

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