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

doi:10.1109/PVSC.2018.8548155

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 proceeding › Conference 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 language	English (US)
Title of host publication	2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	283-288
Number of pages	6
ISBN (Electronic)	9781538685297
DOIs	https://doi.org/10.1109/PVSC.2018.8548155
State	Published - Nov 26 2018
Event	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States Duration: Jun 10 2018 → Jun 15 2018

Other

Other	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country	United States
City	Waikoloa Village
Period	6/10/18 → 6/15/18

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

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10.1109/PVSC.2018.8548155

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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

Alloy Loss Mitigation Through Use of Barrier Layers during CdCl Processing of Cd0.60Zn0.4Te and Cd0.87Mg0.13Te. / Reich, Carey L.; Swanson, Drew E.; Onno, Arthur; Shimpi, Tushar; Metzger, Wyatt K.; Sampath, Walajabad S.; Holman, Zachary.

2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., 2018. p. 283-288 8548155.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Reich, CL, Swanson, DE, Onno, A, Shimpi, T, Metzger, WK, Sampath, WS & 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., 8548155, Institute of Electrical and Electronics Engineers Inc., pp. 283-288, 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States, 6/10/18. https://doi.org/10.1109/PVSC.2018.8548155

Reich CL, Swanson DE, Onno A, Shimpi T, Metzger WK, Sampath WS et al. 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. Institute of Electrical and Electronics Engineers Inc. 2018. p. 283-288. 8548155 https://doi.org/10.1109/PVSC.2018.8548155

Reich, Carey L. ; Swanson, Drew E. ; Onno, Arthur ; Shimpi, Tushar ; Metzger, Wyatt K. ; Sampath, Walajabad S. ; Holman, Zachary. / Alloy Loss Mitigation Through Use of Barrier Layers during CdCl Processing of Cd0.60Zn0.4Te and Cd0.87Mg0.13Te. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 283-288

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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.",

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