研究目的
Investigating the influence of encapsulant material on module performance using optical ray-tracing models based on updated complex refractive index data.
研究成果
The study successfully compiled updated complex refractive index data for various encapsulants and used it in ray-tracing simulations to predict CTM current loss. The predictions were found to be adequate when compared to actual measurements, with encapsulant low-wavelength cutoff identified as the most critical parameter for minimizing CTM current loss. Further research is needed to refine the simulation model and verify the prediction of environmental cycling module loss.
研究不足
The method predicts slightly higher CTM loss than actual measurements, indicating a need for further refinements to the model. The study also assumes that the solar cell is adequately protected by the encapsulant during environmental testing.
1：Experimental Design and Method Selection:
The study involved compiling updated complex refractive index data for various encapsulants and using these data in ray-tracing simulations to predict CTM loss.
2：Sample Selection and Data Sources:
Five laminated encapsulant materials commonly used in commercial solar modules were investigated.
3：List of Experimental Equipment and Materials:
A Perkin Elmer Lambda 1050 optical spectrometer was used for measuring hemispherical reflectance and transmittance.
4：Experimental Procedures and Operational Workflow:
Encapsulants were laminated in a glass-encapsulant-glass sample structure, and their optical properties were measured before and after damp heat testing.
5：Data Analysis Methods:
The data were used to calculate n and (cid:6) and predict optical power loss due to reflection and absorption by the encapsulant.
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