Luminescence of Cu+ in halosulphate phosphor
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Ultraviolet photo-excited luminescence from Cu-doped halosulphate phosphors has been investigated. The intense emission of the spectrum is assigned to electronic transitions 3d94s1 → 3d10 in Cu+ ions. Increase in photoluminescence (PL) peak intensity suggesting that Cu plays an important role in PL emission in the present matrix. However, limited hosts with Cu+ as luminescence center were studied due to difficulties in incorporating it in a luminescence form. Cu-doped halosulphate phosphors were synthesized by wet chemical method. X-ray diffraction and PL characterization of phosphors has been reported in this article. The article discusses the luminescence of Cu+ and the simple method of incorporation in various new hosts.
KeywordsCuBr Excitation Maximum Li2B4O7 Divalent Form Monovalent Copper
Authors are indebted to Director, NEERI, Nagpur for providing facilities. SJD is thankful to BRNS, Department of Atomic Energy, Government of India, for the financial support.