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首页> 外文期刊>Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry >Cost-effective liquid-junction solar devices with plasma-implanted Ni/TiN/CNF hierarchically structured nanofibers
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Cost-effective liquid-junction solar devices with plasma-implanted Ni/TiN/CNF hierarchically structured nanofibers

机译：具有等离子体植入的Ni / TiN / CNF分层结构纳米纤维的经济高效的液态交联太阳能器件

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摘要

Carbon-based conductive materials have been recognized as promising alternatives to noble metals as the electrode in optoelectronic devices. Herein, by utilizing energetic plasma ion implantation, Ni-doped TiN nanowire (NWs) modified graphitic carbon nanofibers (CNF) are designed and prepared as the candidates of the platinum (Pt) counter electrode for low-cost hybrid perovskite-based liquid-junction photoelectrochemical solar cells (LPSCs). Notably, the photoelectrochemical (PEC) response of p-Rb(0.05)FA(0.95)PbI(3) based-LPSCs equipped with the Ni/TiN/CNF counter electrode is almost identical to that with a typical Pt counter electrode. From electrochemical investigations, i.e., electrochemical impedance spectroscopy (EIS), we observe that the CNF-based materials show a similar redox activity compared with the Pt counter electrode, indicating low charge-transfer resistance (R-ct) and large capacitance (C). The LPSCs, with a configuration of p-Rb(0.05)FA(0.95)PbI(3)/BQ (2 mM), BQ(center dot-) (2 mM)/Ni/TiN/CNF-based counter electrode, exhibit an open-circuit photovoltage of 1.00 V and a short-circuit current density of 7.02 mA/cm(2) under 100 mW/cm(2) irradiation. The overall optical-to-electrical energy conversion efficiency is 5.06%. The PEC solar cell shows good stability for 5 h under irradiation. The CNF-based counter electrode enables potential applications, including but not limited to PEC solar devices, dye-sensitized solar cells (DSSCs), solar fuel devices and hydrogen evolution reaction.
机译：碳基导电材料已被公认为贵金属作为光电器件电极的有前途的替代品。本文利用高能等离子体离子注入技术，设计并制备了镍掺杂锡纳米线（NWs）修饰的石墨碳纳米纤维（CNF），作为低成本钙钛矿混合液结光电化学太阳能电池（LPSCs）的铂（Pt）对电极候选材料。值得注意的是，配备Ni/TiN/CNF对电极的p-Rb（0.05）FA（0.95）PbI（3）基LPSC的光电化学（PEC）响应与配备典型Pt对电极的LPSC几乎相同。通过电化学研究，即电化学阻抗谱（EIS），我们观察到CNF基材料显示出与铂对电极类似的氧化还原活性，表明电荷转移电阻（R-ct）较低，电容（C）较大。LPSCs的结构为p-Rb（0.05）FA（0.95）PbI（3）/BQ（2mm），BQ（中心点-）（2mm）/Ni/TiN/CNF基对电极，在100mW/cm（2）辐照下，其开路光电压为1.00V，短路电流密度为7.02mA/cm（2）。总的光电能量转换效率为5.06%。PEC太阳能电池在辐照下表现出良好的5h稳定性。基于CNF的对电极具有潜在的应用，包括但不限于PEC太阳能装置、染料敏化太阳能电池（DSSC）、太阳能燃料装置和析氢反应。

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