Damp-Heat Induced Degradation of Transparent Conducting Oxides for Thin-Film Solar Cells: Preprint

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The stability of intrinsic and Al-doped single- and bi-layer ZnO for thin-film CuInGaSe2 solar cells, along with Al-doped Zn1-xMgxO alloy and Sn-doped In2O3 (ITO) and F-doped SnO2, was evaluated by direct exposure to damp heat (DH) at 85oC and 85% relative humidity. The results show that the DH-induced degradation rates followed the order of Al-doped ZnO and Zn1-xMgxO >> ITO > F:SnO2. The degradation rates of Al:ZnO were slower for films of higher thickness, higher substrate temperature in sputter-deposition, and with dry-out intervals. As inferred from the optical micro-imaging showing the initiation and propagation of degrading patterns and regions, the ... continued below

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9 p.

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Pern, F. J.; Noufi, R.; Li, X.; DeHart, C. & To, B. May 1, 2008.

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The stability of intrinsic and Al-doped single- and bi-layer ZnO for thin-film CuInGaSe2 solar cells, along with Al-doped Zn1-xMgxO alloy and Sn-doped In2O3 (ITO) and F-doped SnO2, was evaluated by direct exposure to damp heat (DH) at 85oC and 85% relative humidity. The results show that the DH-induced degradation rates followed the order of Al-doped ZnO and Zn1-xMgxO >> ITO > F:SnO2. The degradation rates of Al:ZnO were slower for films of higher thickness, higher substrate temperature in sputter-deposition, and with dry-out intervals. As inferred from the optical micro-imaging showing the initiation and propagation of degrading patterns and regions, the degradation behavior appears similar for all TCOs, despite the obvious difference in the degradation rate. A degradation mechanism is proposed to explain the temporal process involving thermal hydrolysis.

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9 p.

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  • Presented at the 33rd IEEE Photovoltaic Specialists Conference, 11-16 May 2008, San Diego, California

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  • Report No.: NREL/CP-520-42525
  • Grant Number: AC36-99-GO10337
  • Office of Scientific & Technical Information Report Number: 929591
  • Archival Resource Key: ark:/67531/metadc899799

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  • May 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • April 6, 2017, 3:27 p.m.

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Pern, F. J.; Noufi, R.; Li, X.; DeHart, C. & To, B. Damp-Heat Induced Degradation of Transparent Conducting Oxides for Thin-Film Solar Cells: Preprint, article, May 1, 2008; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc899799/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.