Development of field-effect passivation layer prepared by wet-process for cost effective silicon solar cells
| Project/Area Number |
18K05008
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 31020:Earth resource engineering, Energy sciences-related
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| Research Institution | Hirosaki University |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | シリコン太陽電池 / 表面パッシベーション / ゾルゲル法 / アルミナ / 電界効果パッシベーション / パッシベーション |
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| Outline of Final Research Achievements |
Conversion efficiency of the photovoltaics can be improved by introducing surface passivation layer. Alumina layer is act as field-effect passivation layer. In this study, we prepared alumina passivation layer by sol-gel wet process and evaluated the layer preparation conditions. The samples calcined around 500℃ to 600℃ shows longer minority carrier lifetime, and lower interface state density. On the other hand, the samples one week after calcination tend to reduce carrier lifetime value around 60%. At the same time, interface state density also increased. To overcome the issue, we prepared thicker layer (2 nm at initial condition) and we can obtain more better passivation quality.
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| Academic Significance and Societal Importance of the Research Achievements |
シリコン太陽電池は出荷シェアの9割近くを占めており、近い将来にわたって主流であり続けることが期待される。太陽電池の特性をより向上させることができる表面パッシベーション膜は、高い変換効率を持つ太陽電池に適用されているが、成膜、製造コストの問題により高価となる。本研究課題で検討しているゾルゲル法は、安価かつ簡便な成膜手法であるため、本手法で良好なパッシベーション膜を開発することで、高性能かつ安価な太陽電池の実現が期待できる。
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Report
(4 results)
Research Products
(16 results)
