Reliability Study of Ruthenium-Based Dye-Sensitized Solar Cells (DSCs)
Reliability Study of Ruthenium-Based Dye-Sensitized Solar Cells (DSCs)
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DOI：
10.1109/jphotov.2011.2180702
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发表时间：
2012-01
影响因子：
3
通讯作者：
D. Bari;A. Cester;N. Wrachien;Laura Ciammaruchi;Thomas M. Brown;A. Reale;Aldo Di Carlo;Gaudenzio Meneghesso
中科院分区：
文献类型：
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作者：
D. Bari;A. Cester;N. Wrachien;Laura Ciammaruchi;Thomas M. Brown;A. Reale;Aldo Di Carlo;Gaudenzio Meneghesso
本文研究了敏化太阳电池的可靠性。我们进行了加速光照应力，目的是提取降解规律作为时间，光照强度和温度的函数，以了解哪些是参与降解的最重要机制。在光照胁迫下，TiO 2/敏化剂/电解质界面上形成的缺陷和化学物种是导致TiO 2/敏化剂/电解质界面上电荷转移和离子迁移减少的主要原因。由于太阳光照射会增加染料敏化太阳能电池（DSC）的温度，我们研究了温度对DSC在纯热应力下降解的作用。我们发现，温度单独强烈影响DSC性能，增强敏化剂的降解，然后降低光生电流。
In this paper, we study the reliability of sensitized solar cells. We carried out accelerated illumination stresses with the purpose to extract a degradation law as a function of time, illumination intensity, and temperature in order to understand which are the most important mechanisms involved in the degradation. The main responsible for degradation during illumination stresses is the formation of defects and chemical species at TiO 2/sensitizer/electrolyte interface, which reduces the charge transfer at the interface and the ion migration across the electrolyte. Since the sunlight exposure increases the temperature of the dye-sensitized solar cell (DSC), we have studied the role of temperature on the degradation of DSCs by pure thermal stresses. We found that temperature alone strongly impacts the DSC performance, enhancing the degradation of the sensitizer and then reducing the photogenerated current.