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A. Sternig, J. Bernardi, K. McKenna, O. Diwald:
"Surface-specific visible light luminescence from composite metal oxide nanocrystals";
Journal of Materials Science, 50 (2015), 8153 - 8165.

Low-coordinated surface elements on metal
oxide nanoparticles represent the basis for a new concept of
luminescent nanoparticles made of abundant, non-toxic,
and thermally stable materials. This combined experi-
mental and theoretical study describes the generation and
stability of Ba-doped MgO nanoparticle surfaces and their
optical absorption and luminescence dependence on Ba
loading. It is demonstrated that the vapor phase growth
process employed here represents a particularly robust
synthesis approach for particle powders with reproducibly
adjustable photoluminescence emission properties in the
range between blue and yellow light. Moreover, this in-
depth characterization also provides an understanding of
the electronic and optical characteristics of this nanopar-
ticulate material with a so far unnoticed potential for solid-
state light applications that are based on down conversion
of UV light.

http://dx.doi.org/10.1007/s10853-015-9393-2

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