Characterization of laser carved micro channel polycrystalline silicon solar cell |
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Authors: | Hsin-Chien Chen Liann-Be Chang Ming-Jer Jeng Chao-Sung Lai |
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Affiliation: | a Department of Electronic Engineering & Green Technology Research Center, Chang-Gung University, #259, Winhwa 1st Rd., Kueisan-Taoyuan 333, Taiwan, ROC;b Department of Computer & Communication, Army Accident ROC, CO32092 No. 113, Sec. 4, Jungshan E. Rd., Jungli City, Taoyuan County, Taiwan, ROC |
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Abstract: | In this study the efficiency of polycrystalline silicon solar cells was increased carving micro channel structures using a laser. In research to date, micro channel structures on the surface of polycrystalline silicon solar cells have been manufactured and studied. In an experiment polycrystalline silicon solar cell with micro channel structures on the surface demonstrated an increase in efficiency of 0.23-1.50%, as the radius of the micro channel structures varied from 15 μm to 35 μm. Micro channels also improved the Fill Factor of polycrystalline silicon solar cells. However, the efficiency started to decrease when the radius of the micro channel structures was greater than 40 μm. Detailed features of the variation in current voltage of polycrystalline silicon solar cells with micro channels are discussed. |
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Keywords: | Micro channel Polycrystalline silicon Solar cell Laser carving |
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