Figures

Figure 1

CL spectra of AlN:Eu processed as follows: (a) no O₂ and no heat treatment; (b) no O₂ but heated to 923 K; (c) grown under 1.6% O₂; (d) grown under 3.8% O₂; and (e) grown under 20% O₂.

Figure 2

Photograph of CL emission from AlN:Eu³⁺ samples doped with varying amounts of oxygen.

Figure 3

The integrated CL(x) and PL(?) intensities from AlN:Eu³⁺ samples versus oxygen content of the plasma, normalized to the emission intensity from an oxygen-free sample.

Figure 4

PL emission spectrum from AlN:Eu³⁺ grown under 20% oxygen.

Figure 5

Semilogarithmic PL decays from AlN:Eu³⁺ samples doped with varying amounts of oxygen. The slow component of each decay has a rate constant of (0.4 ms)^-1. The decays have been vertically offset for clarity.

top        text        endnotes

© 2001 The Materials Research Society