研究目的
Investigating the use of nickel selenide nanoparticles as a cheaper alternative to Pt-counter electrodes in dye-sensitized solar cells.
研究成果
The study successfully synthesized Ni3Se2 and Ni3Se4 nanocrystals with different stoichiometric ratios and crystal structures, demonstrating their potential as efficient and cheaper alternatives to Pt-counter electrodes in DSCs, with efficiencies comparable to Pt-based cells.
研究不足
The study is limited to the synthesis and application of Ni3Se2 and Ni3Se4 nanocrystals as counter electrodes in DSCs, with a focus on their electrocatalytic performance compared to Pt.
1：Experimental Design and Method Selection:
The synthesis of Ni3Se2 and Ni3Se4 nanocrystals was carried out using the hot injection method by varying the injection and growth temperature.
2：Sample Selection and Data Sources:
Anhydrous nickel acetylacetonate and Se powder were used as precursors.
3：List of Experimental Equipment and Materials:
A 50 mL 4-neck RB flask equipped with a condenser, Schlenk line, and various chemicals including 1-octadecene, oleic acid, and trioctylphosphine.
4：Experimental Procedures and Operational Workflow:
The synthesis involved heating the mixture under an Ar atmosphere, degassing under vacuum, and injecting a TOPSe solution at specific temperatures.
5：Data Analysis Methods:
The crystal structures were investigated by X-ray diffraction (XRD), and the morphology was examined by TEM and HRTEM.
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