Photoluminescence and electrical properties in Pr-modified (Ba1-xCax)TiO3 multifunctional ceramics
2020
Mechanoluminescence materials, characterized with non-thermal light emission
in response to mechanical stimuli, can have many applications in direct
conversion of mechanical energy into light energy. The aim of this study was
to develop wet chemistry approaches for the synthesis of the finest ceramic
powders of barium calcium titanate for the use in the production of a
mechanoluminescent detector. Wet chemistry route allows the control of the
particle size of ceramic materials up to several nanometers. For the first
time luminescence was recorded in Ba0.9Ca0.1TiO3 ceramics despite reports
that light emission in BCT is possibly only over 23% of calcium content. The
resulting ceramics showed high relative density, reasonable ferro and
dielectric properties, and red light emission can be observed with the naked
eye.
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