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Home > Archive>Volume 34, Issue 5, 2015 >551-557. DOI:10.11972/j.issn.1001-9014.2015.05.007
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Correlation between polycrystalline based solar cell conversion efficiency and crystallization defects
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State Key Laboratory of PV Science and Technology,Changzhou Trina Solar Energy Co,Ltd,State Key Laboratory of PV Science and Technology,Changzhou Trina Solar Energy Co,Ltd,State Key Laboratory of PV Science and Technology,Changzhou Trina Solar Energy Co,Ltd,State Key Laboratory of PV Science and Technology,Changzhou Trina Solar Energy Co,Ltd,Key Laboratory of Polar Materials and Devices,Ministry of Education,Key Laboratory of Polar Materials and Devices,Ministry of Education

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    Abstract:

    With remarkable advantage of comprehensive cost, multicrystalline based photovoltaic module products become the most competitive and widely used PV products. A strong correlation was found between crystal defects of multicrystalline silicon and the cell efficiency thereby. The defect density at the bottom and top brick is very high, as a result, the corresponding cell efficiency is low (14.5~15.5%). The cell efficiency of the wafers from the middle position of brick is high (16.5~17.5%) due to the low defect density. However, different kinds of defects exert different influence on the cell performance. For instance, some stable defects (such as dislocation) will survive at the final cell, and some other defects (such as interstitial metal impurities) are removed during the cell process.

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ZHANG Ying-Bin, XIONG Zhen, CHEN Yi-Feng, FENG Zhi-Qiang, YANG Ping-Xiong, CHU Jun-Hao. Correlation between polycrystalline based solar cell conversion efficiency and crystallization defects[J]. Journal of Infrared and Millimeter Waves,2015,34(5):551~557

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History
  • Received:August 25,2014
  • Revised:January 27,2015
  • Adopted:January 28,2015
  • Online: November 30,2015
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