Dye-sensitized Solar Cells with New One-Dimensional Halide-Bridged Cu(I)-Ni(II) Heterometal Coordination Polymers Containing Hexamethylene Dithiocarbamate Ligand
Dye-sensitized Solar Cells with New One-Dimensional Halide-Bridged Cu(I)-Ni(II) Heterometal Coordination Polymers Containing Hexamethylene Dithiocarbamate Ligand
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DOI：
10.3390/polym4031613
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发表时间：
2012-09-01
期刊：
影响因子：
5
通讯作者：
Kuroda-Sowa, Takayoshi
中科院分区：
文献类型：
--
作者：
Okubo, Takashi;Tanaka, Naoya;Kuroda-Sowa, Takayoshi
合成了含六亚甲基二硫代氨基甲酸酯(HM-DTC)配体的一维卤代桥联铜(I)-镍(II)异金属配位聚合物，并对其进行了结晶学表征。用UV-Vis-NIR和光电子能谱计算了配位聚合物的最高占据分子轨道(HOMO)和最低未占据分子轨道(LUMO)能级，结果表明这些配位聚合物具有合适的HOMO能级，可用作染料增感。直流电导率测量和阻抗测量表明，这些一维铜(I)-镍(II)异金属配位聚合物是绝缘体(sigma(300K)和lt；10(-12)S cm(-1))。此外，该配位聚合物还被用作染料敏化太阳能电池的敏化材料。与一维卤化物桥联的铜(I)-铜(II)混价配位聚合物相比，一维Cu(I)-Ni(II)异金属配位聚合物的性能较差。
One-dimensional (1D) halide-bridged Cu(I)-Ni(II) heterometal coordination polymers containing a hexamethylene dithiocarbamate (Hm-dtc) ligand have been synthesized and crystallographically characterized. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels of the coordination polymers were estimated using UV-Vis-NIR and photoelectron spectroscopies, and it was revealed that these coordination polymers have appropriate HOMO levels for use as dye sensitizers. Direct-current electrical conductivity measurements and impedance measurements indicated that these 1D Cu(I)-Ni(II) heterometal coordination polymers were insulators (sigma(300K) < 10(-12) S cm(-1)). In addition, the coordination polymers were used as sensitizing materials in dye-sensitized solar cells (DSSCs). DSSCs with 1D Cu(I)-Ni(II) heterometal coordination polymers showed lower performances than those with 1D halide-bridged Cu(I)-Cu(II) mixed-valence coordination polymers.