Abstract
V₂O 5 -P₂O 5 -ZnO-Sb₂O₃ glasses modified with BaO and Al₂O₃ are synthesized as a sealing material for large-scale dye-sensitized solar cells (DSSCs). A compositional study is performed in order to determine the glass that can be sintered below 500℃ with a high chemical stability against the electrolyte. The flow size of the glasses after the heat treatment and the glass stability are increased with the addition of Al₂O₃ and BaO, while the glass transition temperature is decreased. After the reaction with the electrolyte at 60℃ for 72 h, the addition of 5 mol% of BaO and 2 mol% of Al₂O₃ considerably enhances the chemical stability of the glass. X-ray diffraction (XRD) and scanning electron microscope (SEM) are used to examine the reaction between the electrolyte and glasses. The structural contribution of the additives is also investigated and discussed.
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