Structural and optical characterization of Dy‐doped heavy‐metal oxide and oxyhalide borate glasses

Abstract

ARTICLE INFO ABSTRACT The transition metal ions such as Copper, Silver and Titanium when dissolved in B 2 O 3 glass matrix, even in very small quantities, influence the properties very strongly. In the present study Borate Glasses doped with different transition metals have been prepared in laboratory by using Melt Quench Technique. The absorption spectra of the prepared samples have been obtained by using UV/Visible spectroscopy. The Band-Gap Energy (E g) values are obtained by using Tau's Plots. The significant increase in E g values from 2.60 to 3.18 eV is observed. A transmission window is observed in the spectra of Cu-doped glass sample which indicates the possibility of large number of applications in the field of nonlinear optics. An increase in the density values from 4.851 to 5.038 gm/cm 3 is observed with the addition of TMOs having higher atomic number.

Physical, optical and structural studies of copper-doped lead oxychloro borate glasses

“…The inclusion of PbO and PbX 2 (X = F, Cl and Br) in the borate composition resulted in creating BO 3 and BO 4 units with the further considerable increase in transparency in IR radiation, high refractive index and optical nonlinearities. Lead glasses with halides have special optical properties leading to applications in modern optical devices, such as laser engineering and drawing of optical fibres [8][9][10][11]. Electron paramagnetic resonance (EPR) technique can present extensive knowledge about the microscopic local environment of the transition metal (TM) ions in glasses, which in turn are influenced by the local structure.…”

White emission materials from glass doped with rare Earth ions: A review

“…As explained later, the observed variations in the branching ratios of the transitions occurred for Dy 3+ ion due to changes in the local structure allowing dysprosium to work as a 'local field sensor' [22]. Also, the Dy 3+ doped/codoped glasses and phosphors have been extensively studied for various applications [18][19][20][21][22][23][24][25]. In this work, the development of Dy 3+ doped in several glass structures for white emitting materials application have reviewed.…”

“…There are many advantages of using Dy 3+ ion including potential applications in white light generation as a single phase white emitting source, mercury-free luminescence lamps, electron trapping materials and as light conversion materials when used along with a mixture of other RE ions [18][19][20][21][22]. Moreover, Dy 3+ ion is one of the most preferred activator ions to be used for estimating the local environment inside the luminescent materials [21]. As explained later, the observed variations in the branching ratios of the transitions occurred for Dy 3+ ion due to changes in the local structure allowing dysprosium to work as a 'local field sensor' [22].…”

A comparable study of the EPR spectra and local structures for 3d1‐ and 3d9‐doped halo‐borate glasses

“…For example, due to the flexible composition in terms of the BO 3 triangles and BO 4 tetrahedra, of which the amount can be modified by importing PbO and PbX 2 (X = F, Cl, and Br) in the network and thus enhance the transparency in the IR region. 7,8 In addition, the heavy metal oxide glass containing Pb 2+ ions can produce strong absorption in the ultraviolet region, which means that those electrons in some ionic structures can be excited by ultraviolet light to produce transitions and hence it will affect the electrical conductivity of the glasses. 9 Meanwhile, the introduction of halogen into the glass matrix also increases the anionic conductivity of glass.…”