Synchronously Reduced Surface States, Charge Recombination, and Light Absorption Length for High-Performance Organic Dye-Sensitized Solar Cells
Synchronously Reduced Surface States, Charge Recombination, and Light Absorption Length for High-Performance Organic Dye-Sensitized Solar Cells
复制标题
同步减少高性能有机染料敏化太阳能电池的表面态、电荷复合和光吸收长度
DOI：
10.1021/jp101222s
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发表时间：
2010-04-08
影响因子：
3.3
通讯作者：
Wang, Peng
中科院分区：
文献类型：
--
作者：
Li, Renzhi;Liu, Jingyuan;Wang, Peng
我们采用4,4-二己基-4H-环戊[2,1-b:3,4-b']二噻吩（CPDT）片段作为共轭间隔基，构建了用于染料敏化太阳能电池的极高摩尔吸收系数有机发色团，在100 mW cm(-2) AM1.5G太阳光照射下表现出8.95%的高功率转换效率。我们的比较实验证明了采用 CPDT 代替流行的 2,2'-二噻吩 (DT) 作为进一步染料设计的基础材料的显着优点。我们还证明，半导体纳米晶体上染料分子和电解质成分的可控共组装可以同时降低表面态并抑制电荷复合。
We employ the 4,4-dihexyl-4H-cyclopenta[2,1-b:3,4-b']dithiophene (CPDT) segment as a conjugated spacer to construct an extremely high-molar-absorption-coefficient organic chromophore for dye-sensitized solar cells, exhibiting a high power conversion efficiency of 8.95% measured under irradiation of 100 mW cm(-2) AM1.5G sunlight. Our comparative experiments have proved the prominent merit of employing CPDT instead of the prevailing 2,2'-dithiophene (DT) as the building block for the further dye design. We also have demonstrated that a controllable coassembling of dye molecules and electrolyte components on semiconducting nanocrystals can reduce surface states and inhibit charge recombination synchronously.