Photoluminescence and dielectric properties of pure/Yb-doped SrZrO3 crystals

High quality SrZrO3 nanocubes have been successfully synthesized via a facile hydrothermal method. Then, the Yb-doped SrZrO3 were also fabricated by solid state reaction using the as-synthesized pure SrZrO3. The as-synthesized SrZrO3 nanocubes distributed homogeneously and displayed sharp edges with an average particle size of about 100 nm. In addition, the dielectric loss value of the pure SrZrO3 at 1 MHz was only 0.05 when the temperature rose from 25 °C to 550 °C. Meanwhile, the band gap of SrZrO3 could be reduced by about 0.3 eV after Yb3+ doping, where Yb3+ mainly occupied Sr2+ position (A site doping). Besides, all of the pure and Yb-doped SrZrO3 samples exhibit violet light emission centered at 423 nm (excited at 372 nm), which was originated from material intrinsic defects.231