Photoinduced color centers creation in superionic crystals RbAg 4 I 5 |
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| Authors: | N Kovaleva A Boris S Bredikhin T Awano |
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| Institution: | 1. Institute of Solid State Physics, Chernogolovka , Moscow dist. , 142432 , Russia;2. Department of Applied Physics , Tohoku Gakuin University , Tagajo , 985 , Japan |
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| Abstract: | Abstract A new phenomenon of a reversible photoinduced coloration caused by light irradiation is discovered and investigated in superionic RbAg 4 I 5 crystals. The reversible photoinduced absorption is found to be a result of irradiation by light with wavelengths in the region from 420 nm to 450 nm. The proposed mechanism of the discovered effect is associated with ambipolar diffusion of screened by mobile ions optically excited electronic carriers. The processes of color centers creation in superionic crystals RbAg 4 I 5 due to additive coloring in iodine vapours, ionic implantation and γ-ray irradiation are considered. |
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| Keywords: | Superionic crystals photoinduced color centers |
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