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Characterisation of high-efficiency multi-junction solar cells and tunnel junctions.

机译:高效多结太阳能电池和隧道结的表征。

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摘要

Tunnel junctions for use in solar cells and monolithic multi junction solar cells are studied experimentally. The current density-voltage characteristic of an AlGaAs/AlGaAs tunnel junction having a mesa resistance of 0.11 mO·cm2 is determined using time-averaged measurements. A tunneling peak higher than the operating point of a solar cell is recorded by this method, with a value of ∼950 A/cm2. Due to the unstable nature of the negative differential resistance region of the current density-voltage curve, measurements of the tunneling peak and valley current densities are obscured. A time-dependent analysis is performed on this sample, from which a tunneling peak of a value larger than 1100 A/cm 2 is determined. An A1GaAs/InGaP tunnel junction having a tunneling peak of 80 A/cm2 is presented. Multi junction solar cells fabricated using indium tin-oxide as transparent top electrodes are measured. These cells have a maximal efficiency of 25.1% at 3 suns illumination and 26.1% at 20 suns, ∼40% lower efficiency than the standard multi junction solar cell.
机译:实验研究了用于太阳能电池和单片多结太阳能电池的隧道结。使用时间平均测量来确定台面电阻为0.11 mO·cm2的AlGaAs / AlGaAs隧道结的电流密度-电压特性。用这种方法记录的隧穿峰高于太阳能电池的工作点,其峰值约为950 A / cm2。由于电流密度-电压曲线的负差分电阻区域的不稳定特性,因此无法测量隧道峰值和谷值电流密度。对该样品进行随时间变化的分析,由此确定大于1100 A / cm 2的值的隧穿峰。提出了具有80 A / cm2隧穿峰的AlGaAs / InGaP隧道结。测量了使用铟锡氧化物作为透明顶部电极制造的多结太阳能电池。这些电池在3个太阳照射下的最大效率为25.1%,在20个太阳照射下的最大效率为26.1%,比标准多结太阳能电池低约40%。

著录项

  • 作者

    Kolhatkar, Gitanjali.;

  • 作者单位

    University of Ottawa (Canada).;

  • 授予单位 University of Ottawa (Canada).;
  • 学科 Physics Condensed Matter.
  • 学位 M.Sc.
  • 年度 2011
  • 页码 135 p.
  • 总页数 135
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:44:23

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