研究目的
Investigating the metastable behavior of cesium fluoride (CsF)-treated Cu(In1–x,Gax)Se2 (CIGS) solar cells under heat-light soaking (HLS) and heat-soaking (HS) treatments.
研究成果
The metastable behavior observed in CsF-treated CIGS solar cells under HLS and HS treatments is attributed to the specific behavior of alkali-containing new compounds at the surface and/or the migration of alkali metals at the surface and bulk regions. The study challenges the traditional concept of the VSe–VCu divacancy complex for the total beneficial effect of HLS in alkali-treated CIGS solar cells.
研究不足
The study focuses on CsF-treated CIGS solar cells, and the findings may not be directly applicable to other types of solar cells or treatments. The mechanisms behind the observed metastable behavior require further investigation.
1：Experimental Design and Method Selection:
The study investigates the metastable behavior of CsF-treated CIGS solar cells under HLS and HS conditions.
2：Sample Selection and Data Sources:
Polycrystalline CIGS thin films were deposited on Mo-coated SLG substrates via a modified three-stage coevaporation process.
3：List of Experimental Equipment and Materials:
Equipment includes a solar simulator, secondary ion mass spectrometry (SIMS), scanning electron microscopy (SEM), and transmission electron microscopy with energy dispersive X-ray spectroscopy (TEM-EDX).
4：Experimental Procedures and Operational Workflow:
CsF-PDT was performed at 350°C for 2 min with and without selenium vapor. HLS treatment was conducted at 130°C for 30 min under 1 sun illumination in air, whereas HS treatment was performed for 30 min in dark in air.
5：Data Analysis Methods:
Current–voltage (J–V) and capacitance–voltage (C–V) measurements were performed to analyze the solar cells' performance.
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