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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Investigation of 35 Elements as Single Metal Oxides, Mixed Metal Oxides, or Dopants for Titanium Dioxide for Dye-Sensitized Solar Cells
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Investigation of 35 Elements as Single Metal Oxides, Mixed Metal Oxides, or Dopants for Titanium Dioxide for Dye-Sensitized Solar Cells

机译：染料敏化太阳能电池用二氧化钛中的35种元素作为单一金属氧化物，混合金属氧化物或掺杂剂的研究

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摘要

A total of 35 elements were investigated as single component metal oxides and as dopants for TiO2 for use in dye-sensitized solar cells (DSCs). An array dispenser and scanner system was utilized for high-throughput testing of the single component metal oxides and hundreds of doped TiO2 compositions. The optimal dopant concentrations were identified and summarized according to their effect on short circuit current (J_(SC)) and open circuit voltage (V_(OC)). New dopant candidates were discovered, including several post-transition metals, which showed improvements in DSC performance when incorporated at compositions of 6% In TiO2, 6% Sn TiO2, and 6% Sb TiO2 (metals basis). These compositions were used to synthesize scaled-up DSC devices for detailed characterization. Incorporation of 6% In into TiO2 enhanced V_(OC) substantially and increased I_(SC) slightly, 6% Sn improved I_(SC) while preserving V_(OC), and 6% Sb increased I_(SC) significantly but decreased V_(OC). When coincorporated, Cr and Sb showed a complementary interaction, which reduced resistance to charge transport in the DSC device. The 2% Cr, 6% Sb TiO2 showed higher I_(SC) and V_(OC) values than 6% Sb TiO2 and considerably higher I_(SC) than 2% Cr TiO2. The fill-factor for 2% Cr, 6% Sb TiO2 was relatively low, but the maximum power was higher than the other compositions due to the higher currents. The V_(OC) values for DSC devices with different compositions correlated linearly with the measured flat-band potentials (E_(FB)).
机译：共研究了35种元素，作为单组分金属氧化物和TiO2的掺杂剂，用于染料敏化太阳能电池（DSC）。阵列分配器和扫描仪系统用于单组分金属氧化物和数百种掺杂的TiO2组合物的高通量测试。根据最佳掺杂浓度对短路电流（J_（SC））和开路电压（V_（OC））的影响，确定并总结了最佳浓度。发现了新的候选掺杂剂，包括几种过渡后金属，当掺入6％In TiO2、6％Sn TiO2和6％Sb TiO2（基于金属）时，DSC性能得到改善。这些组合物用于合成按比例放大的DSC设备，以进行详细表征。在TiO2中掺入6％In可以显着提高V_（OC）并稍微提高I_（SC），6％Sn可以改善I_（SC）同时保留V_（OC），6％Sb可以显着提高I_（SC）但降低V_（ OC）。当合并时，Cr和Sb表现出互补的相互作用，从而降低了DSC器件中电荷传输的阻力。 2％Cr，6％Sb TiO2的I_（SC）和V_（OC）值均高于6％Sb TiO2，而I_（SC）的值明显高于2％Cr TiO2。 2％Cr，6％Sb TiO2的填充系数相对较低，但由于电流较高，因此最大功率高于其他组合物。具有不同成分的DSC器件的V_（OC）值与测得的平带电势（E_（FB））线性相关。

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