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Optics Letters


  • Vol. 36, Iss. 2 — Jan. 15, 2011
  • pp: 100–102

Ultrabroad near-infrared photoluminescence from ionic liquids containing subvalent bismuth

Hong-Tao Sun, Yoshio Sakka, Minoru Fujii, Naoto Shirahata, and Hong Gao  »View Author Affiliations

Optics Letters, Vol. 36, Issue 2, pp. 100-102 (2011)

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We have shown that Lewis-acidic halogenoaluminate ionic liquid (IL) containing subvalent bismuth can be used as a near-IR (NIR) luminescent material. Raman and absorption spectra evidence the coexistence of Bi 5 3 + and Bi + in the liquid. The Bi 5 3 + and Bi + emitters, stabilized by this Lewis-acidic liquid, demonstrate ultrabroad NIR photoluminescence with a lifetime of around 1 μs . We envisage that the bismuth activated ILs would not only enrich the well-established spectrum of soft luminescent materials but also might promote the design of novel photonic materials activated by other p-block elements.

© 2011 Optical Society of America

OCIS Codes
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(300.2140) Spectroscopy : Emission

ToC Category:

Original Manuscript: October 12, 2010
Manuscript Accepted: November 13, 2010
Published: January 6, 2011

Hong-Tao Sun, Yoshio Sakka, Minoru Fujii, Naoto Shirahata, and Hong Gao, "Ultrabroad near-infrared photoluminescence from ionic liquids containing subvalent bismuth," Opt. Lett. 36, 100-102 (2011)

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