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首页> 外文期刊>Advanced Functional Materials >PtCoFe Nanowire Cathodes Boost Short-Circuit Currents of Ru(II)-Based Dye-Sensitized Solar Cells to a Power Conversion Efficiency of 12.29%
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PtCoFe Nanowire Cathodes Boost Short-Circuit Currents of Ru(II)-Based Dye-Sensitized Solar Cells to a Power Conversion Efficiency of 12.29%

机译：PtCoFe纳米线阴极可提高基于Ru（II）的染料敏化太阳能电池的短路电流，使功率转换效率达到12.29％

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摘要

PtCoFe nanowires with different alloying compositions are chemically prepared and acted as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs) with Ru(II)-based dyes. Due to their superior I-3(-) reduction activity, PtCoFe nanowires with rich (111) facets enhance the performance of DSSCs. Hence, N719 DSSCs with PtCoFe nanowires, respectively, produce better power conversion efficiency (PCE) of 8.10% for Pt33Co24Fe43 nanowire, 8.33% for Pt74Co12Fe14 nanowire, and 9.26% for Pt49Co23Fe28 nanowire in comparison to the PCE of Pt CE (7.32%). Further, the PRT-22 DSSC with Pt49Co23Fe28 nanowire exhibits a maximum PCE of 12.29% with a certificated value of 12.0%, which surpass the previous PCE record of the DSSCs with Ru(II)-based dyes. The photovoltaic and electrochemical results reveal the composition-dependent activity along with a volcano-shaped trend in the I-/I(3)(-)redox reaction. Theoretical work on the adsorption energies of I-2, the desorption energies of I-, and the corresponding absolute energy demonstrates that the I-3(-) reduction activity followed in the order of Pt49Co23Fe28(111) plane > Pt74Co12Fe14(111) plane > Pt33Co24Fe43(111) plane, proving Pt49Co23Fe28 nanowire to be a superior cathode material for DSSCs.
机译：化学合成具有不同合金成分的PtCoFe纳米线，并在含Ru（II）的染料的染料敏化太阳能电池（DSSC）中充当反电极（CE）。由于其优异的I-3（-）还原活性，具有丰富（111）小面的PtCoFe纳米线可增强DSSC的性能。因此，与Pt CE的PCE（7.32％）相比，带有PtCoFe纳米线的N719 DSSC分别产生更好的功率转换效率（PCE），分别为Pt33Co24Fe43纳米线为8.10％，Pt74Co12Fe14纳米线为8.33％，Pt49Co23Fe28纳米线为9.26％。此外，具有Pt49Co23Fe28纳米线的PRT-22 DSSC的最大PCE为12.29％，认证值为12.0％，超过了以前基于Ru（II）染料的DSSC的PCE记录。光伏和电化学结果揭示了I- / I（3）（-）氧化还原反应中的依赖于火山的趋势以及与组成有关的活性。对I-2的吸附能，I-的解吸能以及相应的绝对能的理论研究表明，I-3（-）的还原活性依次为Pt49Co23Fe28（111）平面> Pt74Co12Fe14（111）平面> Pt33Co24Fe43（111）平面，证明Pt49Co23Fe28纳米线是DSSC的优良阴极材料。

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