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首页> 外文期刊>Journal of Crystal Growth >Effect of excitons on the absorption in the solar-cell with AlGaAs/GaAs superlattice grown by molecular beam epitaxy
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Effect of excitons on the absorption in the solar-cell with AlGaAs/GaAs superlattice grown by molecular beam epitaxy

机译:激子对分子束外延生长的AlGaAs / GaAs超晶格在太阳能电池中吸收的影响

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摘要

We investigate the effect of excitons on the photo-absorption in the solar-cell with AlGaAs/GaAs superlattice active layer. Absorption spectrum measured at room temperature is analyzed by using numerical simulation. Experimentally obtained spectrum is well explained by the simulation taking the excitonic effect into account. The photo-absorption is enhanced by excitons especially near the absorption edge due to the discrete bound exciton states as well as unbound continuous sates. This result clearly indicates that the excitonic absorption is effective in the superlattice even at room temperature. Superlattice active layer enhances the absorption efficiency of solar-cells and very useful for device applications.
机译:我们研究激子对具有AlGaAs / GaAs超晶格活性层的太阳能电池中光吸收的影响。使用数值模拟分析在室温下测量的吸收光谱。考虑到激子效应,模拟可以很好地解释实验获得的光谱。由于离散的结合激子状态以及未结合的连续态,激子特别是在吸收边缘附近增强了光吸收。该结果清楚地表明,即使在室温下,激子吸收在超晶格中也是有效的。超晶格活性层提高了太阳能电池的吸收效率,对设备应用非常有用。

著录项

  • 来源
    《Journal of Crystal Growth》 |2011年第1期|p.504-507|共4页
  • 作者单位

    Waseda Institute for Advanced Study (WIAS), Waseda University, J-6-J Nishi-Waseda, Shinjuku, Tokyo 169-8050,Japan,Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 769-8555, Japan,Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26 Nishi-Waseda, Shinjuku, Tokyo 169-0051, Japan,CREST, Japan Science and Technology Agency, Sanbancho 5, Chiyoda, Tokyo 102-0075, Japan;

    NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan;

    Waseda Institute for Advanced Study (WIAS), Waseda University, J-6-J Nishi-Waseda, Shinjuku, Tokyo 169-8050,Japan,Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26 Nishi-Waseda, Shinjuku, Tokyo 169-0051, Japan,CREST, Japan Science and Technology Agency, Sanbancho 5, Chiyoda, Tokyo 102-0075, Japan;

    Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 769-8555, Japan,Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26 Nishi-Waseda, Shinjuku, Tokyo 169-0051, Japan,NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A3. Molecular beam epitaxy; A3. Superlattices; B2. Semiconducting gallium arsenide; B3. Solar cells;

    机译:A3。分子束外延;A3。超晶格;B2。半导体砷化镓;B3。太阳能电池;

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