{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:54:29Z","timestamp":1753872869891,"version":"3.41.2"},"reference-count":23,"publisher":"AIP Publishing","issue":"8","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2009,10,15]]},"abstract":"<jats:p>Off-axis implantation of 80 keV Eu ions into epitaxial c-plane InAlN\/GaN bilayers confines rare-earth (RE) doping largely to the InAlN layer. Rutherford backscattering spectrometry and x-ray diffraction show good correlations between the Eu3+ emission linewidth and key structural parameters of InxAl1\u2212xN films on GaN in the composition range near lattice matching (x\u223c0.17). In contrast to GaN:Eu, selectively excited photoluminescence (PL) and PL excitation spectra reveal the presence of a single dominant optical center in InAlN. 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