Location of lanthanide impurity levels in the III-V semiconductor GaN

Journal article (2006)

Authors

Department

Radiation, Radionuclides and Reactors () (TU Delft)

DOI: https://doi.org/doi:10.1063/1.2336716

Ground states Photoluminescence Wide band gap semiconductors Praseodymium III-V semiconductors Impurity states Gallium compounds Europium Terbium Valence bands Conduction bands Ytterbium

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Published Date

10-08-2006

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Source:

Applied Physics Letters, 89 (6), 2006

Faculty

Applied Sciences

Department

Radiation, Radionuclides and Reactors

Abstract

Knowledge from lanthanide spectroscopy on wide band gap (6–10?eV) inorganic compounds is used to understand and predict optical and electronic properties of the lanthanides in the III-V semiconductor GaN. For the first time the location of the 4fn ground state energy of each divalent and trivalent lanthanide ion relative to the valence and conduction bands in GaN is presented. The authors will demonstrate that the quantum efficiency of luminescence from Pr3+, Eu3+, Tb3+, and Yb3+ depends on the location of the lanthanide levels. Level location also controls electron acceptor and electron donor properties of lanthanide ions.

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