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Origin of orange co...
Origin of orange color in nominally undoped HVPE GaN crystals
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- Zimmermann, F. (author)
- TU Bergakad Freiberg, Germany
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- Beyer, Franziska (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Gaertner, G. (author)
- TU Bergakad Freiberg, Germany
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- Roeder, C. (author)
- TU Bergakad Freiberg, Germany
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- Nguyen, Son Tien (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Janzén, Erik (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Vesela, D. (author)
- Research Centre Rez, Czech Republic
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- Lorincik, J. (author)
- Research Centre Rez, Czech Republic
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- Hofmann, P. (author)
- NaMLab gGmbH, Germany
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- Krupinski, M. (author)
- NaMLab gGmbH, Germany
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- Mikolajick, T. (author)
- NaMLab gGmbH, Germany; Technical University of Dresden, Germany
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- Habel, F. (author)
- Freiberger Compound Mat GmbH, Germany
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- Leibiger, G. (author)
- Freiberger Compound Mat GmbH, Germany
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- Heitmann, J. (author)
- TU Bergakad Freiberg, Germany
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(creator_code:org_t)
- ELSEVIER SCIENCE BV, 2017
- 2017
- English.
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In: Optical materials (Amsterdam). - : ELSEVIER SCIENCE BV. - 0925-3467 .- 1873-1252. ; 70, s. 127-130
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- In this article we investigated unintentionally doped (UID) GaN grown by hydride vapor phase epitaxy (HVPE) with respect to point defects and impurity concentration. The samples were orange tinted to different extent. Optical analysis was performed by micro-photoluminescence and absorption spectroscopy. Absorption measurements revealed an absorption peak at 1.5 eV related to an internal transition in Mn3+ impurities and a second band with low energy onset at 1.9 eV, both increasing with the extent of orange color. Electron paramagnetic resonance investigations showed the presence of Mn2+ and Fe3+ in the colored crystals. The overall impurity concentration was verified by secondary ion mass spectrometry. Orange tint is associated with an increase of transition metal contamination, especially Mn. Based on these observations we suggest that the orange coloring in the investigated UID HVPE GaN samples is caused by the presence of Mn impurities. (C) 2017 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Crystal impurities; Bulk GaN; Hydride vapor phase epitaxy; Absorption spectroscopy; Electron paramagnetic resonance spectroscopy
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Zimmermann, F.
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Beyer, Franziska
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Gaertner, G.
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Roeder, C.
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Nguyen, Son Tien
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Janzén, Erik
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show more...
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Vesela, D.
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Lorincik, J.
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Hofmann, P.
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Krupinski, M.
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Mikolajick, T.
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Habel, F.
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Leibiger, G.
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Heitmann, J.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Optical material ...
- By the university
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Linköping University