The effect of modifiers on the fluorescence and life-time of Gd3+ ions doped in borate glasses

Preparation of thin films of perovskite-type YAlO 3 :Gd 3+ –Pr 3+ UV phosphors

“…Because these values were almost the same between the film and powder samples, we may consider that no extra defects that might affect the Gd 3+ emission were generated during the film preparation. These values also agree well with those reported for Gd 3 + single doped materials such as CaAl 12 O 19 :Gd 3 + (2 ms) [36], SiO 2 :Gd 3 + (1-2 ms) [37,38], borates (1-3 ms) [39,40], and glasses (1-5 ms) [41,42]. This result implies that Pr 3+ co-doping does not influence the Gd 3+ emission lifetime significantly in YAlO 3 :Gd 3+ -Pr 3+ .…”

Luminescence properties of rare earth and transition metal ions doped potassium lead borophosphate glass

“…Ti 2+ ions with D 0 configuration has dominated the emission peak and shifted the peak to indigo-blue band region while codoped with Y 2+ ions at 436 nm and energy level transition of z 4 D o 5/2 ĺa 2 P 1/22 shown in sample (4). Sample (7) has been observed that Nd 2+ activator energy level fell back to the lower energy level from higher energy 6 H o . This phenomenon can be seen from the sample (1) and (2), which the peaks that dominated by Nd 2+ ions at near UV region.…”

“…We can observe the trend of emission according to activators which are differentiated with single or codoped technique in Figure 2. Sample (5), (6), (7), and (8) are the single doped sample doped with Nd 2+ , Ti 2+ , Fe 2+ , and Y 2+ ions. All samples containing 0.01 mole percentage of activator to enhance the luminescence properties.…”

“…Glass modifiers were used in modifying the glass network structure hence affects the optical characteristics of host glasses [7]. In this study, lead oxide was used as glass modifier and glass former because of it has the ability of forming glasses over a wide range of concentration [8].…”

Study of elastic moduli of lithium borobismuthate glasses using ultrasonic technique

“…At lower Li 2 O content, Li + ions go into the structural interstices to compensate the excess negative charge of BiO 6 octahedra [4][5][6][7][8][9][10]. Thus, Bi 2 O 3 -based glasses have attracted a considerable attention due to their potential applications as fast ion conducting glasses [11][12][13], layers for optical and optoelectronic devices [14,15], and thermal sensor [16]. These glasses have good mechanical resistance, enhanced magnetic properties [17][18][19], and photo induced non-linear optical properties, which are caused by substantial contribution of anharmonic electron-phonon interactions [20].…”