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  • 标题:Modeling Multiple Quantum Well and Superlattice Solar Cells
  • 本地全文:下载
  • 作者:Carlos I. Cabrera ; Julio C. Rimada ; Maykel Courel
  • 期刊名称:Natural Resources
  • 印刷版ISSN:2158-706X
  • 电子版ISSN:2158-7086
  • 出版年度:2013
  • 卷号:4
  • 期号:3
  • 页码:235-245
  • DOI:10.4236/nr.2013.43030
  • 出版社:Scientific Research Publishing
  • 摘要:The inability of a single-gap solar cell to absorb energies less than the band-gap energy is one of the intrinsic loss mechanisms which limit the conversion efficiency in photovoltaic devices. New approaches to “ultra-high” efficiency solar cells include devices such as multiple quantum wells (QW) and superlattices (SL) systems in the intrinsic region of a p-i-n cell of wider band-gap energy (barrier or host) semiconductor. These configurations are intended to extend the absorption band beyond the single gap host cell semiconductor. A theoretical model has been developed to study the performance of the strain-balanced GaAsP/InGaAs/GaAs MQWSC, and GaAs/GaInNAs MQWSC or SLSC. Our results show that conversion efficiencies can be reached which have never been obtained before for a single-junction solar cell.
  • 关键词:Quantum Well; Strain in Solids; Solar Cell; Conversion Efficiency; Modeling
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