研究目的
To discover the ideal perovskite material for solar cell application by exploring a large parameter space (composition, surrounding condition, fabrication technique etc.) using a rapid combinatorial screening approach to speed-up the rate of discovery.
研究成果
The high-throughput solar simulator based system for perovskite solar cells provides rapid and reliable research-scale characterization, allowing for excellent versatility in terms of measurement protocols. The system tackles commonly known issues found when measuring hysteretic PSCs and can potentially set a benchmark for PCS measurement protocols. The automation of the solar simulator can reduce the discovery time of novel perovskite materials and improve the productivity of perovskite research laboratories.
研究不足
The study acknowledges the complexity of measuring perovskite solar cells due to their ionic movement within the material, resulting in a range of transient behaviors. The manual handling of the devices during the fabrication and characterization and the arbitrary choice of measurement parameters contribute to difficulties when comparing PCE from lab-to-lab.
1：Experimental Design and Method Selection:
The study details a high-throughput solar cell testing system that enables parallel, real-time and comprehensive measurements, allowing for 16 solar cells to be characterized simultaneously. The system is designed to perform user predefined electrically, automated and parallel 4-wire sense current-voltage analysis (J-V, constant voltage and MPPT) and employs a jig-based sample holder with temperature and humidity control.
2：Sample Selection and Data Sources:
The devices were made on custom-designed pre-patterned FTO substrates that are being probed in a 4-wire sense configuration with spring-loaded pins.
3：List of Experimental Equipment and Materials:
The system includes a custom-built PCB board, a 16-channel potentiostat (Bio-Logic VMP3), a commercial solar simulator (Abet Technologies Sun 3000 class AAA), and a reference Si solar cell with KG5 filter.
4：Experimental Procedures and Operational Workflow:
The system allows for the customization of measurement parameters and protocols, simultaneous measurement of several devices, and a sample holder to precisely overlap the aperture mask with the counter electrodes. The measurement protocol includes light and bias pre-conditioning, and versatility in selecting J-V parameters such as dwell time or scan speed.
5：Data Analysis Methods:
The software automatically processes the measurements and provides an output file with the calculated photovoltaic parameters.
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