Alloy Loss Mitigation Through Use of Barrier Layers during CdCl Processing of Cd0.60Zn0.4Te and Cd0.87Mg0.13Te

Carey L. Reich, Drew E. Swanson, Arthur Onno, Tushar Shimpi, Wyatt K. Metzger, Walajabad S. Sampath, Zachary Holman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

The main obstacle to realizing the use of polycrystalline wide bandgap alloys of CdTe with Mg and Zn in PV is the CdCl processing step. This step, essential to CdTe device performance, removes Zn and Mg from the alloy films while producing less of the benefits seen from the process with CdTe. In this study, the use of AlO3CdS, and MgZnO films at the free surface of the alloys to prevent loss of Mg or Zn is investigated. It is found that AlO3 is the most effective at reducing loss of Mg and Zn, followed by CdS and then MgZnO. A new method of evaluating the transition to CdTe from the as deposited alloy is proposed to account for differences in transition behaviors.

Original languageEnglish (US)
Title of host publication2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages283-288
Number of pages6
ISBN (Electronic)9781538685297
DOIs
StatePublished - Nov 26 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: Jun 10 2018Jun 15 2018

Other

Other7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
CountryUnited States
CityWaikoloa Village
Period6/10/186/15/18

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Keywords

  • II-VI alloys
  • passivation
  • tandem photovoltaics
  • thin films

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Reich, C. L., Swanson, D. E., Onno, A., Shimpi, T., Metzger, W. K., Sampath, W. S., & Holman, Z. (2018). Alloy Loss Mitigation Through Use of Barrier Layers during CdCl Processing of Cd0.60Zn0.4Te and Cd0.87Mg0.13Te. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC (pp. 283-288). [8548155] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2018.8548155