Add time:07/31/2019         Source:sciencedirect.com

High optical quality undoped Strontium iodide (cas 10476-86-5) crystal grown by using the Bridgman method was characterized. Crystal growth process was described and growth technical parameters were discussed. Impurity analysis of raw materials and as-grown crystal boule indicates that it is feasible to pre-purify the raw material by zone refining or recrystallization. Luminescence properties were studied by photoluminescence, radioluminescence, fluorescence decay time, and scintillation time response. As-grown crystal shows good optical transmittance with wavelength concerned and is transparent for its large Stoke shift, 540 nm peaked broad emission, which has a fluorescence decay time 494 ns at 300 K. The broad emission range from 350 nm to 800 nm was tentatively speculated to be intrinsic and have an origin of self-trapped exciton.

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