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Real time spectroscopic ellipsometry of thin film CdTe deposition by magnetron sputtering for photovoltaic applications

  • J. A. Zapien
  • , Jie Chen
  • , Jian Li
  • , J. Inks
  • , N. J. Podraza
  • , Chi Chen
  • , J. Drayton
  • , A. Vasko
  • , A. Gupta
  • , S. L. Wang
  • , R. W. Collins
  • , A. D. Compaan

Research output: Journal Publications and ReviewsRGC 22 - Publication in policy or professional journal

Abstract

Real time spectroscopic ellipsometry based on rotating-compensator modulation and multichannel detection has been implemented to characterize CdTe deposition for polycrystalline thin film photovoltaic applications. The CdTe film measured and analyzed in detail in this study was prepared by magnetron sputtering onto a native oxide-covered crystalline silicon substrate. Key observations from this study include: (i) monolayer-level surface roughness thickness (-3 Å) at the onset of bulk layer formation and during subsequent growth to ∼50 Å; (ii) gradual development of a lower density bulk layer after ∼1300 Å of CdTe thickness; and (iii) much broader above-gap critical points in the dielectric function for thin film polycrystalline CdTe compared to the single crystal. © 2005 IEEE.
Original languageEnglish
Pages (from-to)461-464
JournalConference Record of the IEEE Photovoltaic Specialists Conference
DOIs
Publication statusPublished - 2005
Event31st IEEE Photovoltaic Specialists Conference - 2005 - Lake Buena Vista, FL, United States
Duration: 3 Jan 20057 Jan 2005

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

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