In:
physica status solidi (b), Wiley, Vol. 243, No. 2 ( 2006-02), p. 488-493
Abstract:
We have investigated the optical absorption spectra of the CsBr:Au – crystals irradiated with an ultraviolet (UV) light. Before the UV‐light irradiation, the absorption bands associated with the isolated Au – ion (monomer) are observed in the energy region of UV. After a slight UV‐light irradiation, the absorption intensities of the monomer bands decrease and the absorption bands due to paired Au – ions appear around the monomer bands. Furthermore, UV‐light irradiation on the CsBr:Au – crystals brings about the appearance of several new absorption bands in the visible region. From the analogy with the aggregation of the F centers in alkali halide crystals, the new absorption bands are attributed to the aggregate centers of the Au – ions. They can also be regarded as the CsAu nanocluster constructed from the Cs + cations and the Au – anions. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Type of Medium:
Online Resource
ISSN:
0370-1972
,
1521-3951
DOI:
10.1002/pssb.200541314
Language:
English
Publisher:
Wiley
Publication Date:
2006
detail.hit.zdb_id:
208851-4
detail.hit.zdb_id:
1481096-7
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