Composition-Dependent Band Gap and Band-Edge Bowing in AlInN: A Combined Theoretical and Experimental Study

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概要

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• A combined experimental and theoretical study of the band gap of AlInN is presented, which confirms the breakdown of the virtual crystal approximation (VCA) for the conduction and valence band edges. Composition-dependent bowing parameters for these quantities are extracted. Additionally, composition-dependent band offsets for GaN/AlInN systems are provided. We show that local strain and built-in fields affect the band edges significantly, leading to optical polarization switching at a much lower In composition than expected from a VCA approach.

• 2013-12-25

著者

• Martin Robert

  Department Of Biological Sciences Murray State University

• Schulz Stefan

  Tyndall National Institute, Lee Maltings, Cork, Ireland

• Caro Miguel

  Tyndall National Institute, Lee Maltings, Cork, Ireland

• Tan Lay-Theng

  Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, U.K.

• Parbrook Peter

  Tyndall National Institute, Lee Maltings, Cork, Ireland

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• Optical Properties of GaN Nanorods Containing a Single or Multiple InGaN Quantum Wells
• Composition-Dependent Band Gap and Band-Edge Bowing in AlInN: A Combined Theoretical and Experimental Study
• Optical Properties of GaN Nanorods Containing a Single or Multiple InGaN Quantum Wells

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