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 gigahertz range.
Time-resolved photoluminescence of n-doped SrTiO3 / Rubano, Andrea; D., Paparo; M., Radović; Sambri, Alessia; F., Miletto Granozio; SCOTTI DI UCCIO, Umberto; Marrucci, Lorenzo. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 92:(2008), pp. 021102-1-021102-3. [10.1063/1.2832666]
Time-resolved photoluminescence of n-doped SrTiO3
RUBANO, ANDREA;SAMBRI, ALESSIA;SCOTTI DI UCCIO, UMBERTO;MARRUCCI, LORENZO
2008
Abstract
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 gigahertz range.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
