Triphenylamine-based dyes for dye-sensitized solar cells

Triphenylamine-based dyes for dye-sensitized solar cells
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用于染料敏化太阳能电池的三苯胺基染料

DOI:
10.1016/j.dyepig.2008.10.012
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发表时间:
2009-06
期刊:
影响因子:
4.5
通讯作者:
薄志山
薄志山
中科院分区:
材料科学2区
文献类型:
--
作者:
薄志山

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设计并合成了三种新型双三苯胺染料,并对其光学和电化学性质进行了表征。用该染料作为光敏剂制备的TiO 2基染料敏化太阳能电池显示出比相应的单TPA取代的供体-受体染料更高的开路电压和功率转换效率。染料中的两个疏水性双三苯胺供体基团有效地抑制了I3-接近纳米锐钛矿TiO 2膜表面。最有前途的新型染料显示出5.06%的功率转换效率,10.25 mA cm-2的短路光电流密度,0.678 V的开路光电压和0.73的填充因子。
Three, novel dyes carrying bis-triphenylamine donor groups were designed and synthesized, and their optical and electrochemical properties were characterized. TiO2-based dye-sensitized solar cells fabricated with the dyes as photosensitizers displayed higher open-circuit voltage and power conversion efficiency than the corresponding mono-TPA substituted donor-acceptor dyes. The two, hydrophobic bis-triphenylamine donor groups within the dyes effectively inhibited the approach of I3−to the surface of nanocrystallite TiO2film. The most promising of the novel dyes displayed a power conversion efficiency of 5.06%, short circuit photocurrent density of 10.25 mA cm−2, open circuit photovoltage of 0.678 V and fill factor of 0.73.
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