Time-resolved photoluminescence of n-doped SrTiO_3

Details Time-resolved photoluminescence of n-doped SrTiO_3 Time-resolved photoluminescence of n-doped SrTiO_3

2008-02-20

arxiv.org/abs/0802.2907v1

Appl. Phys. Lett. 92, 021102 (2008)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.2832666

Following the recent surge of interest in n-doped strontium titanate as a possible blue light emitter, a time-resolved photoluminescence analysis was performed on nominally pure, Nb-doped and oxygen-deficient single-crystal SrTiO3 samples. The doping-effects on both the electronic states involved in the transition and the decay mechanism are respectively analyzed by comparing the spectral and dynamic features and the yields of the emission. Our time-resolved analysis, besides shedding some light on the basic recombination mechanisms acting in these materials, sets the intrinsic bandwidth limit of the proposed blue light emitting optoelectronic devices made of Ti-based perovskites heterostructures in the GHz range.

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