Strong quenching of Y 2 SiO 5 :Pr 3+  nanocrystal luminescence by praseodymium nonuniform distribution | Zendy

Zhmurin P. N. | Zendy; Znamenskii N. V. | Zendy; Yukina T. G. | Zendy; Malyukin Yu. V. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Strong quenching of Y 2 SiO 5 :Pr 3+ nanocrystal luminescence by praseodymium nonuniform distribution

Author(s) -

Zhmurin P. N.,

Znamenskii N. V.,

Yukina T. G.,

Malyukin Yu. V.

Publication year - 2007

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200642544

Subject(s) - luminescence , nanocrystal , quenching (fluorescence) , praseodymium , ionic radius , analytical chemistry (journal) , materials science , relaxation (psychology) , spectroscopy , ionic bonding , ion , chemistry , fluorescence , nanotechnology , optoelectronics , optics , physics , social psychology , psychology , organic chemistry , chromatography , quantum mechanics , metallurgy

Using site‐selective and time‐resolved spectroscopy technique in combination with single molecular spectroscopy technique the concentration quenching of the 1 D 2 luminescence of Pr 3+ ions has been examined in Y 2 SiO 5 :Pr 3+ nanocrystals. The direct comparison of the data obtained for nano‐ and bulk Y 2 SiO 5 :Pr 3+ crystals has revealed that the concentration threshold of luminescence quenching is strikingly low for nanocrystals. In this case the ordered stage in the 1 D 2 luminescence decay has been observed at anomalously low Pr concentration (0.5 at%). This effect is caused by the preferred Pr accumulation at the nanocrystal periphery that provides the relaxation of elastic tension arising due to the difference of ionic radii of Pr 3+ and Y 3+ . The temporal behavior of the 1 D 2 luminescence decay in the disordered stage shows that the concentration quenching is caused by the cooperative cross‐relaxation. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research