成果報告書詳細
管理番号20110000000323
タイトル*平成22年度中間年報 新エネルギー技術研究開発/革新的太陽光発電技術研究開発(革新型太陽電池国際研究拠点整備事業)/低倍率集光型薄膜フルスペクトル太陽電池の研究開発(光学設計技術)
公開日2011/7/28
報告書年度2010 - 2010
委託先名株式会社カネカ
プロジェクト番号P07015
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:1. 研究開発の内容及び成果等 [目標]H22年度中間目標 低倍率集光系シリコン系/化合物系多接合薄膜太陽電池において、以下の目標を達成する。 (1)変換効率30%を達成するためのオプティカルカップリング構造の提案(シミュレーションによる光学設計) (2)オプティカルカップリング・オプティカルスプリッティング構造を有する低倍率集光型薄膜フルスペクトル太陽電池において、光学設計による3%の変換効率向上の実証
英文要約Title: Research and Development on Innovative Solar Cells (International Research Center for Innovative Solar Cell Program) Research and Development of Thin Film Full Spectrum Solar Cells with Low Concentration Ratios (Optical Control) (FY2008-2012) FY2010 Annual Report
We have been researching to develop optical coupling structure for thin film full spectrum solar cells. We have successfully fabricated optical coupler that has high spectral selectivity optimized by optical simulation. Therefore, we have confirmed that we can fabricate a optimal optical coupler designed by simulation. Furthermore, we have proposed a novel parallel and series solar cell structure and examined bottom two stack cells. As the first step for fabricating novel structure, we examined to optimize tunnel junction between microcrystalline Si and CIS (CIGS) cells. As a result, we have successfully fabricated two stack tandem structure of microcrystalline Si and CIS (or CIGS) cells for the first time. And we have examined top a-Si top cell for parallel connection. Further improvement of cell property would be expected by improving quality for each layer and the way of fabricating. Cell property of a quadruple junction solar cell with optical coupler is calculated using optical simulation and electronic circuit simulation. And we have designed a thin film full spectrum solar cell with conversion efficiency of 30% under the low concentration ratios from calculations. Hereby, we can conclude that we have accomplished our intermediate target. With regard to optical splitter, we have been applying optical simulation technique that was used for optical coupler designing. And we found that we can design optical splitter having high spectral selectivity.
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