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Electroinduced structural change- and random walks-based impact on the light emission in Er3+/Yb3+ doped (Pb,La)(Zr,Ti)O3 ceramics
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Image of FIG. 1.
FIG. 1.

(a) Electrical enhancement/reduction of UCE versus wavelength in a Er/Yb doubly doped PLZT ceramic slab (the inset is the schematic configuration of the experimental setup); (b) time dependence of the UCE after removing of the external electric field (the inset is a photo taken from the UCE spot).

Image of FIG. 2.
FIG. 2.

Configuration of the ABO perovskite unit cell for RE doped PLZT: the left diagram is for zero-field; the right diagrams exhibit electro-induced polarizations.

Image of FIG. 3.
FIG. 3.

The ratio of I and I increases monotonous as a function of temperature from 200 to 500 K.

Image of FIG. 4.
FIG. 4.

(a) The vacancies distribution in ABO perovskite unit cell for RE doped PLZT ceramics; (b) An AFM micrograph of the surface of Er/Yb codoped PLZT ceramics; (c)The spectrum taken from typical electrical sparks formed in the air without Er doped PLZT specimen on the way towards the spectrometer; (d) Schematic diagram of energy levels that illustrates distribution of disconnected electrons traps (DET) and recombination centers (DHT), and optical energy storage and optical amplification process.

Image of FIG. 5.
FIG. 5.

The direct comparison of UCEs in the Er/Yb doubly doped PLZT ceramics before and after UV light exposure.

Image of FIG. 6.
FIG. 6.

Random walks for different light in intrinsically disordered Er/Yb codoped PLZT ceramics: solid line presents the path of 529 nm and 543 nm UCEs light and dashed line presents for the path of 556 nm, 568 nm, and three red UCEs light.


Generic image for table
Table I.

Changes of the electric dipole transition intensity for different green emission peaks.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electroinduced structural change- and random walks-based impact on the light emission in Er3+/Yb3+ doped (Pb,La)(Zr,Ti)O3 ceramics