2012
DOI: 10.1364/oe.20.007212
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On the origin of near-IR luminescence in Bi-doped materials (II) Subvalent monocation Bi^+ and cluster Bi_5 ^3+ luminescence in AlCl_3/ZnCl_2/BiCl_3 chloride glass

Abstract: Broadband NIR photoluminescence (from 1000 to 2500 nm) was observed from partially reduced AlCl₃/ZnCl₂/BiCl₃ glass, containing subvalent bismuth species. The luminescence consists of three bands, assigned to Bi⁺ , Bi₂⁴⁺, and Bi₅³⁺ ions. The physical and optical characteristics of these centers and possible contribution to NIR luminescence from bismuth-doped oxide glasses are discussed.

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Cited by 88 publications
(52 citation statements)
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“…Bismuth-doped glasses can give rise to photoluminescence (PL) at wavelengths ranging from 400 nm [1] to 2500 nm [2], under variation of the pump wavelength and composition of the host glass. A wide variety of traditional glass hosts containing Bi have been investigated to date, mainly silicates [3][4][5] and germanates [6][7][8], but also phosphates [9], borates [10], chalcogenides [11,12] and chlorides [2].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Bismuth-doped glasses can give rise to photoluminescence (PL) at wavelengths ranging from 400 nm [1] to 2500 nm [2], under variation of the pump wavelength and composition of the host glass. A wide variety of traditional glass hosts containing Bi have been investigated to date, mainly silicates [3][4][5] and germanates [6][7][8], but also phosphates [9], borates [10], chalcogenides [11,12] and chlorides [2].…”
Section: Introductionmentioning
confidence: 99%
“…A wide variety of traditional glass hosts containing Bi have been investigated to date, mainly silicates [3][4][5] and germanates [6][7][8], but also phosphates [9], borates [10], chalcogenides [11,12] and chlorides [2]. The origin of the infrared emission from Bi-doped glasses remains controversial, with convincing arguments being made for a variety of different emission centers, including Bi + [10], Bi 5+ [13,14], Bi metal clusters [8], point defects [15] and negatively charged Bi2 dimers [16,17].…”
Section: Introductionmentioning
confidence: 99%
“…Bi þ and various clusters [27,28]), however it seems to be a hard challenge to prove their nature unambiguously. Although Fujimoto considers Bi 5 þ as luminescent active center [23], the formation of reduced valence states is more likely.…”
Section: Resultsmentioning
confidence: 99%
“…The presence of bismuth in the form of isomorphous impurity in the position of cations having the formal charge 1+ (K, Rb, Cs, Tl) was only assumed based on the close ionic radii of Bi + and these cations [12]. It is isomorphism and synthesis conditions that formed the basis for correlating the spectral bands with Bi + ions [13][14][15][16][17][18]. However, neither confirmation of isomorphous substitution of the abovementioned components, nor consideration of any other possible Bi + locations in the crystal structures of Bi + -containing compounds with different compositions can be found in the literature.…”
Section: Introductionmentioning
confidence: 99%