DSCs are based on a dye-adsorbed porous TiO2 layer as a photo electrode . Under the illumination, dye molecules are excited and electrons are produced. The injected electrons in the conduction band of TiO2 may recombine with the electrolyte. To obtain high performance DSCs, it is essential to retard the recombination. The charge recombination can be reduced by forming core-shell structure. In this work, we investigated the core-shell structure with Al2O3 and MgO coating layer on the porous TiO2 layer. We confirmed the photovoltaic properties by I-V characteristics. The current and the efficiency was improved. In addition to, Through decrease in the width of EIS arc, which is the sum of the interfacial charge transfer resistances of both electrodes, we can be indicated that the block effect.
|Number of pages||4|
|Journal||Transactions of the Korean Institute of Electrical Engineers|
|Publication status||Published - Jan 2012|
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering