Oligomer Approaches for Solid-State Dye-Sensitized Solar Cells Employing Polymer Electrolytes
Oligomer Approaches for Solid-State Dye-Sensitized Solar Cells Employing Polymer Electrolytes
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DOI：
10.1021/jp067621k
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发表时间：
2007-03
影响因子：
3.7
通讯作者：
Moon-Sung Kang;Jong Hak Kim;J. Won;Y. Kang
中科院分区：
文献类型：
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作者：
Moon-Sung Kang;Jong Hak Kim;J. Won;Y. Kang
利用齐聚物制备固体染料敏化太阳能电池的三种不同方法，称为“齐聚物法”，然后是原位自固化，被成功地用于制备固体染料敏化太阳能电池。低聚物方法采用(1)链两端含有四个氢键中心的超分子，(2)低聚物与高分子量聚合物共混，以及(3)低聚物与二氧化硅纳米颗粒的纳米复合材料。在日照条件下，总的能量转换效率高达4.5%，这可能主要是由于离子电导率的增加以及由于小尺寸液体低聚物电解液的深度渗透而使TiO2层与电解液之间的界面接触更好。∼的阈值离子电导率为1×10~(-4)S cm~(-1)，低于这个阈值的离子电导率可能是决定光电流和能量转换效率的关键因素。在阈值离子电导率以上，离子电导率可能起到次要的作用。
Three different approaches utilizing oligomers, termed the “oligomer approaches”, followed by in situ self-solidification, were applied successfully to prepare solid-state dye-sensitized solar cells. The oligomer approach employs (1) supramolecules containing quadruple hydrogen-bonding sites at both chain ends, (2) oligomer blends with high-molecular-weight polymers, and (3) nanocomposites of oligomer with SiO2 nanoparticles. The overall energy conversion efficiency was as high as 4.5% at 1 sun condition, which may be primarily due to both the increased ionic conductivity and the better interfacial contact between the TiO2 layer and the electrolyte due to the deep penetration of the small-sized liquid oligomer electrolyte. A threshold ionic conductivity of ∼1 × 10-4 S cm-1 was also observed, below which the ionic conductivity may play a key role in determining the photocurrent and the energy conversion efficiency. Above the threshold ionic conductivity, the ionic conductivity may play a less-important rol...