Multilayer antireflection coating design for GaAs0.69P0.31/Si dual-junction solar cells

Sueda Saylan, Timothy Milakovich, Sabina Abdul Hadi, Ammar Nayfeh, Eugene A. Fitzgerald, Marcus S. Dahlem

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

In this paper, we systematically investigate the use of multilayer antireflection coatings (ARC) on GaAs0.69P0.31/Si dual-junction solar cells for achieving broadband reflection suppression. We incorporate dispersion, absorption, and both coherent and incoherent interference, by modeling the solar cell as a multilayer medium of thin films and a substrate, using the transfer matrix method. The analytical model is verified through reflectance measurements on a GaAs(1-x)Px/GaP stack. Our results show that optimized double- and triple-layer ARCs can minimize reflectance to below 5% within the spectral range of ~400-945nm, with the latter maintaining this performance over a broader spectrum of 390-1000nm, in comparison to 25-45% reflectance for the bare solar cell.

Original languageBritish English
Pages (from-to)76-86
Number of pages11
JournalSolar Energy
Volume122
DOIs
StatePublished - 1 Dec 2015

Keywords

  • Antireflection coating
  • GaAsP/silicon tandem cell
  • Multi-junction solar cell
  • Transfer matrix method

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