...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Anion Effects in Organic Dye-Sensitized Mesoscopic Solar Cells with Ionic Liquid Electrolytes: Tetracyanoborate vs Dicyanamide
【24h】

Anion Effects in Organic Dye-Sensitized Mesoscopic Solar Cells with Ionic Liquid Electrolytes: Tetracyanoborate vs Dicyanamide

机译：离子液体电解质对有机染料敏化介观太阳能电池中阴离子的影响：季铁硼酸酯与双氰胺

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We compare the impacts of tetracyanoborate and dicyanamide anions in solvent-free ionic liquid electrolytes upon the optoelectronic features of dye-sensitized solar cells based on an organic push—pull chromophore. With respect to dicyanamide, tetracyanoborate confers a bathochromic and higher photocurrent response upon a dye-coated mesoporous titania film. Numerical simulations on electrical impedance spectroscopies disclose that tetracyanoborate anions evoke a downward displacement of the conduction-band edge of an electrolyte-sinking nanocrystalline film in comparison with dicyanamide, generating a more favorable energy-offset at the titania/dye interface and therefore a better exciton dissociation yield, as proved via the transient emission measurements. An effective recombination reaction rate constant U_(0k) is used to depict the charge-transfer behavior at the titania/electrolyte interface in dye-sensitized solar cells. The negative impact of an about 4 times larger U_(0k) of the dicyanamide cell is overwhelmed by the noticeably higher conduction band edge, leading to the experimentally observed anion-dependent open-circuit photovoltage.
机译：我们比较了基于有机推挽发色团的无溶剂离子液体电解质中四氰基硼酸酯和二氰胺阴离子对染料敏化太阳能电池光电特性的影响。关于双氰胺，四氰基硼酸酯在染料涂覆的中孔二氧化钛膜上赋予红移和更高的光电流响应。电阻抗光谱的数值模拟表明，与双氰胺相比，四氰硼酸酯阴离子引起了吸收电解质的纳米晶体膜导带边缘的向下位移，从而在二氧化钛/染料界面产生了更有利的能量偏移，因此激子更好。解离产率，通过瞬态发射测量证明。有效的重组反应速率常数U_（0k）用于描述染料敏化太阳能电池中二氧化钛/电解质界面处的电荷转移行为。双氰胺电池的U_（0k）约大4倍的负面影响被明显更高的导带边缘所淹没，从而导致了实验观察到的与阴离子有关的开路光电压。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号