研究目的
Investigating the use of copper sulfide/cuprous selenide (Cu2S/Cu2Se) composite as a new counter electrode in quantum-dot-sensitized solar cells (QDSSCs) to enhance electrocatalytic performance towards the polysulfide electrolyte.
研究成果
The (Cu2S/Cu2Se) composite CE significantly improves the performance of QDSSCs by reducing the charge transfer resistance and enhancing the electrocatalytic activity towards the polysulfide electrolyte. The optimized (Cu2S/Cu2Se (5)) CE achieved a cell efficiency of 4.60%, demonstrating its potential as an efficient alternative to traditional CEs.
研究不足
The study focuses on the performance of (Cu2S/Cu2Se) CEs in QDSSCs but does not extensively explore the long-term stability or scalability of these materials for industrial applications.
1：Experimental Design and Method Selection:
The (Cu2S/Cu2Se) CEs were synthesized using the SILAR method. The performance of these CEs was evaluated in QDSSCs.
2：Sample Selection and Data Sources:
FTO substrates were used for the deposition of Cu2S and Cu2Se layers. The photoelectrodes were prepared based on ZnO nanorods sensitized with CdS and CdSe QDs.
3：List of Experimental Equipment and Materials:
Solar simulator equipment (model 'Sharif solar simulator'), EIS equipment, FESEM equipment (model 'FESEM-S4160 Hitachi'), and XRD method were used for characterization.
4：Experimental Procedures and Operational Workflow:
The CEs were assembled with the photo-anode, and polysulfide electrolyte was injected into the cells. The J–V characteristics were measured under AM 1.5G illumination.
5：5G illumination.
Data Analysis Methods:
5. Data Analysis Methods: The impedance of the CE was measured using EIS, and the photovoltaic parameters were extracted from the J–V curves.
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