研究目的
Investigating the use of an additive to improve the Ag metal-assisted chemical etching (Ag-MACE) process for multicrystalline silicon (mc-Si) solar cells to achieve uniform texturing and enhanced performance.
研究成果
The additive developed for the Ag-MACE process significantly improves the uniformity of silver nanoparticle deposition on mc-Si wafers, leading to uniform texturing and enhanced solar cell performance. The maximum efficiency achieved was 19.51%, demonstrating the additive's potential for commercial application in the photovoltaic industry.
研究不足
The study focuses on the improvement of the Ag-MACE process using an additive for mc-Si solar cells. Limitations include the specific conditions under which the additive was tested and the scale of production considered. Further optimization and testing under varying conditions may be necessary for broader applicability.
1：Experimental Design and Method Selection:
The study involved the development of an additive to improve the Ag-MACE process for mc-Si solar cells. The additive, containing alkylphenol polyoxyethylene, was used to ensure uniform deposition of silver nanoparticles on the silicon wafer surface.
2：Sample Selection and Data Sources:
P-type DWS mc-Si wafers were used as the substrate. The wafers were divided into two groups: one treated with the additive (experimental group) and one without (control group).
3：List of Experimental Equipment and Materials:
SEM (Hitachi, S4800) for surface morphology characterization, IPCE solar cell system for reflectance, EQE, and IQE measurements, Sinton WCT-120 and Semilab PV-2000 for minority carrier lifetime measurements, and a current–voltage (I-V) measurement system under AM
4：5G for electrical performance study. Experimental Procedures and Operational Workflow:
The process included saw damage removal, Ag deposition with and without the additive, etching, nanostructure enlargement, alkaline cleaning, silver removal, and drying.
5：Data Analysis Methods:
The performance of the solar cells was analyzed based on reflectivity, efficiency, IQE, EQE, and electrical parameters.
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