研究目的
Development of a new maximum power point tracking method for power conversion efficiency measurement of metastable perovskite solar cells.
研究成果
The new MPPT method developed in this paper effectively eliminates oscillation in Pmax measurements for slow-responding metastable PV devices like PSCs. The reliability of the method was confirmed by comparison with dynamic I-V measurements, suggesting its potential for accurate PCE measurements of such devices.
研究不足
The study acknowledges that complete steady-state is difficult to attain for cells with large hysteresis, which may limit the effectiveness of the new algorithm for such devices.
1：Experimental Design and Method Selection:
The study developed a new MPPT algorithm to eliminate oscillation in Pmax measurements for PSCs by comparing powers at different voltages after changing the voltage in the same direction.
2：Sample Selection and Data Sources:
Two types of PSCs were used, with structures detailed in the paper, and measurements were performed at STC conditions.
3：List of Experimental Equipment and Materials:
A source meter, solar simulator, thermostatic chamber, and Peltier cooling unit were used for I-V curve measurements. A KEYSIGHT B2912A Precision Source/Measure Unit was used for MPPT measurements.
4：Experimental Procedures and Operational Workflow:
The voltage was changed step-wise, and current was measured after stabilization. The new algorithm compared powers at different voltages after changing the voltage in the same direction to prevent oscillation.
5：Data Analysis Methods:
The reliability of the new MPPT method was examined by comparing Pmax data with those obtained by the dynamic I-V method.
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