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Passivation of defect states in surface and edge regions on pn-junction Si solar cells by use of hydrogen cyanide solutions

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Takahashi M., Shishido T., Iwasa H., Kobayashi H.
Open Physics
|
2009
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vol. 7
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issue 2
227-231
EN
The local photovoltage of the pn-junction single-crystalline silicon solar cells observed by spot light scanning gradually decreases in the vicinity of edges. The energy conversion efficiency is increased by shadowing the edge regions where the local photovoltage is lower, showing that the defect density is high in the edge regions. From the analysis of the local photovoltage, the spacial distribution of defect states is obtained. The cyanide method, i. e., immersion of solar cells in HCN solutions at room temperature, increases the local photovoltage and increases the energy conversion efficiency.
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The slewing drive system for tower crane with permanent magnet synchronous motor

86%
Knypiński Ł., Krupiński J., Knypiński Ł., Krupiński J.
Archives of Electrical Engineering
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2021
|
vol. 70
|
issue 1
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