Publications

E.R. Weber

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Intermetallic phases and transition metal interaction in mc-silicon

M. Heuer, S. Langkau, T. Buonassisi, A.A. Istratov, A. Minor, and E.R. Weber
Proc. 22nd European Photovoltaic Solar Energy Conference and Exhibition, Milan, Italy (2007)
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From understanding towards engineering metal impurities in multicrystalline silicon

T. Buonassisi, A.A. Istratov, M. Heuer, M.D. Pickett, M.A. Marcus, B. Lai, S.M. Heald, and E.R. Weber
Proc. 21st European Photovoltaic Solar Energy Conference and Exhibition, Dresden, Germany; pp.696-699 (2006)
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Transition metal interaction and formation of intermetallic phases in multicrystalline silicon

M. Heuer, T. Buonassisi, M.A. Marcus, A.A. Istratov, M.D. Pickett, A. Minor, B. Lai, and E.R. Weber
Proc. 21st European Photovoltaic Solar Energy Conference and Exhibition, Dresden, Germany; pp.1105–1107 (2006)
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Metal particle evolution during solar cell processing in multicrystalline silicon

T. Buonassisi, M.D. Pickett, A.A. Istratov, E. Sauar, T.C. Lommasson, R.F. Clark, S. Narayanan, S.M. Heald, and E.R. Weber
(2005)

15th workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes, Editor: B.L.Sopori, NREL, Golden, CO, pp.174-177 (2005).

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Distinguishing the impacts of individual metal species on multicrystalline silicon performance in a multiple metal environment

T. Buonassisi, A.A. Istratov, M. Heuer, M.D. Pickett, and E.R. Weber
Proc. 20th European Photovoltaic Solar Energy Conference, Barcelona, Spain (2005)
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Synchrotron-based investigations into metallic impurity distribution and defect engineering in multicrystalline silicon via thermal treatments

T. Buonassisi, A.A. Istratov, M.A. Marcus, S. Peters, C. Ballif, M. Heuer, T.F. Ciszek, Z. Cai, B. Lai, R. Schindler, and E.R. Weber
Proc. 31st IEEE Photovoltaic Specialists Conference, Lake Buena Vista, USA; pp.1027–1030 (2005)
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Impact of iron contamination in multicrystalline silicon solar cells: Origins, chemical states, and device impacts

T. Buonassisi, M. Heuer, A.A. Istratov, M.A. Marcus, R. Jonczyk, B. Lai, Z. Cai, J. Isenberg, W. Warta, R. Schindler, and E.R. Weber
Proc. 19th European Photovoltaic Solar Energy Conference, Paris, France; pp.488–491 (2004)
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Application of x-ray synchrotron techniques to the characterization of the chemical nature and recombination activity of grown-in and process-induced defects and impurities in solar cells

T. Buonassisi, O.F. Vyvenko, A.A. Istratov, E.R. Weber, and R. Schindler
MRS Symposium Proceedings 719, 179 (2002)
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Synchrotron-based infrared spectromicroscopy of oxygen gettering by grain boundaries in multicrystalline silicon

M.D. Pickett, T. Buonassisi, A.A. Istratov, R.F. Clark, S. Narayanan, and E.R. Weber

15th workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes, Editor: B.L.Sopori, NREL, Golden, CO, pp.178-181 (2005).

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Efficiency-limiting ‘defect bands’ in string ribbon silicon: correlations between structural, impurity, and electrical properties

T. Buonassisi, G. Hahn, A.M. Gabor, J. Schischka, A.A. Istratov, M.D. Pickett, and E.R. Weber

15th workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes, Editor: B.L.Sopori, NREL, Golden, CO, pp.170-173 (2005).

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Synchrotron-based spectrally-resolved X-ray beam induced current: a technique to quantify the effect of metal-rich precipitates on minority carrier diffusion length in multicrystalline silicon

T. Buonassisi, A.A. Istratov, M.D. Pickett, M.A. Marcus, G. Hahn, S. Riepe, J. Isenberg, W. Warta, G. Willeke, T.F. Ciszek, and E.R. Weber

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Assessing the role of impurities in silicon nitride crucible lining material as a potential source of metal contamination in photovoltaic-grade ingot-cast multicrystalline silicon

T. Buonassisi, A.A. Istratov, M.D. Pickett, J. Rakotoniaina, O. Breitenstein, M.A. Marcus, S.M. Heald, and E.R. Weber

15th workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes, Editor: B.L.Sopori, NREL, Golden, CO, pp.162-165 (2005).

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EXAFS studies on Ni11.6Fe2.8Cu0.4Si27.6 precipitates in multicrystalline silicon

M. Heuer, T. Buonassisi, M.A. Marcus, A.A. Istratov, M.D. Pickett, and E.R. Weber

15th workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes, Editor: B.L.Sopori, NREL, Golden, CO, pp.158-161 (2005).

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Transition metals in silicon solar cells: sources of contamination, interactions, defect engineering

A.A. Istratov, T. Buonassisi, M. Heuer, M.D. Pickett, and E.R. Weber

15th workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes, Editor: B.L.Sopori, NREL, Golden, CO, pp.70-77 (2005).

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Improvement of solar grade silicon through defect control

A.A. Istratov, T. Buonassisi, and E.R. Weber

Freiberger Siliciumtage, Freiberg, Germany (2005).

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The impact of chemical state and thermal stability of metal precipitates on gettering efficiency in silicon

A.A. Istratov, T. Buonassisi, and E.R. Weber

Proc. 4th International Symposium on Advanced Science and Technology of Silicon Materials, Kona, Hawaii, USA (2004).
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The impact of metal impurity clusters on solar cell performance in multicrystalline silicon

T. Buonassisi, A.A. Istratov, and E.R. Weber

Proc. 2004 National Center for Photovoltaics Review Meeting, Denver, USA (2004).

 

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Differences and similarities between metal clusters in mc-Si materials from different manufacturers

T. Buonassisi, A.A. Istratov, T.F. Ciszek, D.W. Cunningham, A.M. Gabor, R. Jonczyk, R. Schindler, M. Sheoran, A. Upadhyaya, A. Rohatgi, B. Lai, Z. Cai, M.A. Marcus, and E.R. Weber

Proc. 14th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Winter Park, CO, pp.226-229 (2004).

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Aluminum gettering and dissolution of Cu3Si precipitates in silicon

T. Buonassisi, A.A. Istratov, and E.R. Weber

Proc. 14th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Winter Park, CO, pp.222-225 (2004).
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Stress-induced nitrogen and oxygen segregation and complexing investigated by high resolution synchrotron FTIR

A. Karoui, T. Buonassisi, F. Sahtout Karoui, G.A. Rozgony, M.C. Martin, E.R. Weber, and T.F. Ciszek

Proc. 14th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Winter Park, CO, pp.204-207 (2004).

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Dependence of precipitation behavior of Cu and Ni in CZ and multicrystalline silicon on cooling conditions

A.A. Istratov, T. Buonassisi, M.A. Marcus, T.F. Ciszek, and E.R. Weber

Proc. 14th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Winter Park, CO, pp.165-169 (2004).
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Distribution and chemical state of Cu-rich clusters in silicon

T. Buonassisi, M.A. Marcus, A.A. Istratov, M. Heuer, T.F. Ciszek, B. Lai, Z. Cai, and E.R. Weber

Proc. 14th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Winter Park, CO, pp.161-164 (2004).
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Transition metals in multicrystalline solar cells: Understanding the nature, origins and impacts of metal contamination in multicrystalline Si and minimizing its impact on solar cell performance

T. Buonassisi, A.A. Istratov, and E.R. Weber

Proc. 14th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Winter Park, CO, pp.17-26 (2004).
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Neutron activation analysis study of metal content of multicrystalline silicon for cost-efficient solar cells

A.A. Istratov, T. Buonassisi, R.J. McDonald, A.R. Smith, R. Schindler, J.A. Rand, J.P. Kalejs, and E.R. Weber

Proc. 13th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Vail, CO, pp.158-161 (2003).

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Experimental procedure for determination of the depth of metal clusters in XBIC/µ-XRF mapping of metal clusters in silicon solar cells

O.F. Vyvenko, T. Buonassisi, A.A. Istratov, and E.R. Weber

Proc. 13th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Vail, CO, pp.102-105 (2003).

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Statistically meaningful data on the chemical state of iron precipitates in processed multicrystalline silicon using synchrotron-based x-ray absorption spectroscopy

T. Buonassisi, M. Heuer, A.A. Istratov, E.R. Weber, Z. Cai, B. Lai, M.A. Marcus, J. Lu, G.A. Rozgony, R. Schindler, R. Jonczyk, and J. Rand

Proc. 13th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Vail, CO, pp.96-101 (2003).

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Impact of metal impurities on solar cell performance

A.A. Istratov, T. Buonassisi, E.R. Weber, R.J. McDonald, A.R. Smith, R. Schindler, J. Isenberg, J.P. Kalejs, J. Rand, P.Geiger, G. Hahn, J. Rakotoniaina, and O. Breitenstein

Proc. 2003 National Center for Photovoltaics Review Meeting, Denver, USA (2003).
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Application of synchrotron radiation based x-ray microprobe techniques for the analysis of recombination activity of metals precipitated at Si/SiGe misfit dislocations

O.F. Vyvenko, T. Buonassisi, A.A. Istratov, E.R. Weber, M. Kittler, and W. Seifert

Proc. 12th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Breckenridge, CO, pp.111-116 (2002).
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Analysis of shunts in multicrystalline silicon solar cells using microprobe x-ray fluorescence technique

T. Buonassisi, O.F. Vyvenko, A.A. Istratov, E.R. Weber, R. Schindler, and G. Hahn

Proc. 12th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Breckenridge, CO, pp.266-270 (2002).

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Application of x-ray fluorescence microprobe technique for the analysis of fully processed solar cells

O.F. Vyvenko, A.A. Istratov, T. Buonassisi, E.R. Weber, and R. Schindler

Proc. 11th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Golden, CO, pp.172-176 (2001).