Abstract
Near-stoichiometric LiNbO<sub>3</sub> crystals slightly doped with Mn from different Li concentrations in the melt were grown by the top seeded solution growth method. The light-induced (small polarons) absorption under UV illumination was probed using near-IR of 780 nm. The dark decay process shows a stretched-exponential behavior. The dependences of the light-induced absorption, the decay time constant, and the stretching factor on the pumping intensity were presented. The photovoltaic current intensity and the photoconductivity under UV illumination were measured by applying a DC field along the z-axis of the sample. The photoconductivity intensity showed superlinear dependence of intensity. The experimental results can be explained quantitatively by developing the two-center charge transport model with direct excitation and recombination between Mn and small polarons.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
