| Summary: | 碩士 === 中華大學 === 機械工程學系碩士班 === 97 === The demand of energy is drastic increasing due to the rapid development of technology and economics. The results of burning the fossil fuels have gradually exhausted the nature resources and have worsen the global warming effects. Recently, alternative energy becomes a subject in view of the oil crisis and environmental protection.
The solar power energy is the most applicable and abundant resources compared with the others energy. Its advantages include safety, clean, endless, transportation-less and no burden to the earth’s heat. However, the high unit cost of power generation becomes the main reason that the solar energy is not prevailing.
The research is focus on the improvement of efficiency for the Polycrystalline Silicon Solar Cells. The higher efficiency represents more cells electricity under the same unit size of solar cells which reduces the solar module size and cost. This research based on parameters study of the front contact screen printing process. The methodology adopt Taguchi method to design printing conditions into four factors – Emulsion thickness, Print pressure, Print speed and Snap-off distance plus three level’s for each factor. From the specimen, the electric characteristics and the conversion efficiency are analyzed and theoretical verification by the weight of front side Ag paste, finger height and finger width. According to the results of this study, parameter adjustment of the Poly-Silicon solar cell screen printing process was achieved to improve efficiency of the solar cells.
|
|---|
