Luminescence and Absorption Spectroscopy of Weakly Mn-Doped SrTiO(3) Crystals

作者：Potucek Z^*; Trepakov V; Deyneka A; Bryknar Z; Galinetto P; Rossella F

来源：Ferroelectrics, 2008, 367: 102-110.

DOI：10.1080/00150190802371572

• Photoluminescence
• optical absorption
• strontium titanate
• Mn impurity centers

The emission and excitation spectra of photoluminescence of the as-grown and reduced SrTiO3:Mn (280 ppm) crystal were studied within wide temperature (12 - 300 K) and spectral (300 - 1600 nm) regions. The emission spectra consist of two overlapping bands. The first one corresponds to the emission of Mn4 + ions substituted in octahedral coordinated Ti4+ sites with zero-phonon line peaking at 723.23 nm at 12 K. The second broad emission band peaking near 870 nm was observed on SrTiO3:Mn crystals for the first time. Temperature behavior of photoluminescence intensity and the origin of this new Mn related emission band are discussed.

• 出版日期2008