Facile synthesis and promising application of iron-doped nickel selenide nanoparticles as high-efficiency counter electrodes of dye-sensitized solar cells |
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| Authors: | Pengkun Wei Jing Li Hongzhi Kang Yang Yang Zewei Hao Xue Chen Donggang Guo Lu Liu |
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| Affiliation: | 1. Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350 China;2. College of Environment and Resource, Shanxi University, Taiyuan, 30006 China |
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| Abstract: | The coexistence of different metal cations in single crystal structure may improve electron transfer rate and catalytic activity. Hence, a series of iron-doped nickel selenide nanoparticles were engineered by adjusting the iron amount as counter electrodes (CEs) in dye-sensitized solar cells. By contrast, the as-designed iron-doped nickel selenides possess more excellent electrochemical properties than the pure nickel selenides. In particular, 10% Fe-Ni0.85Se achieves the lowest charge-transfer resistance and highest electrocatalytic performance, outperforming that of Pt. As expected, based on the optimal 10% Fe-Ni0.85Se CE, the dummy dye-sensitized solar cell yields a higher power conversion efficiency of 8.57% compared with that of 15% Fe-Ni0.85Se (8.33%), 5% Fe-Ni0.85Se (8.15%), Ni0.85Se (7.89%), and even Pt CEs (8.04%). |
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| Keywords: | counter electrode dye-sensitized solar cell iron-doped nickel selenide |
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