2016 Fiscal Year Final Research Report
Process control of hemispherical silicon solar cell
| Project/Area Number |
15K14196
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Metal making/Resorce production engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 結晶成長 / ファセット / 双晶 / 金属生産工学 / 電子・電気材料 |
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| Outline of Final Research Achievements |
A development of film deposition process without a cutting process is necessary due to the possession of silicon resources of solar cells. Therefore, a misty molten metal specimen using water, low melting point alloys and bismuth alloy, which has facet solidification and is similar to silicon, were fabricated and analyzed their microstructures. The pressure to pump molten metal influenced the square of the propellant gas velocity and density when the gas flow velocity was relatively high, but the suction power became low due to entrainment phenomenon and gas inflow, when the flow velocity was low. The thickness and the surface roughness of the formed specimen became unstable depending on the distance and angle from the nozzle. Furthermore, the microstructure became finer and homogenized at specimen edge positions, and it was thought that similar phenomena occurred in silicon specimen.
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| Free Research Field |
結晶工学
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