Luminescent properties of Sr2SiO4: Eu2+ nanorods for near-UV white LED

White light emission from γ-irradiated Ag/Eu co-doped phosphate glass under NUV light excitation

“…However, the difference between the individual degradation rates of the blue LED chip and the phosphors coated on the chip result in chromatic aberration and thus poor white-light performance [7]. This problem can be avoided by rare earth ions co-doped singlephased white-emitting phosphors based on UV LEDs [4,8,9].…”

Preparation and luminescent characteristics of Sr3RE2(BO3)4:Dy3+ (RE=Y, La, Gd) phosphors for white LED

“…3D. The La 2 (BO 3 ) 4 :Dy 3+ has the highest intensity at 575 nm and the Sr 3 Y 2 (BO 3 ) 4 :Dy 3+ has the lowest.…”

“…The several band peaks at 326 nm, 350 nm, 365 nm, 387 nm, 426 nm, 453 nm and 473 nm correspond to the transitions from the ground state 6 H 15/2 to the excited states 4 K 15/2 ; 4 P 7/2 ; 4 P 3/2 ; 4 F 7/2 ; 4 G 21/2 ; 4 H 15/2 ; and 6 F 9/2 , respectively, and the maximum excitation wavelength is located at 350 nm [15,16,18]. 4 :Dy 3+ will be discussed as representative. Three emission bands peaked at 484 nm, 575 nm and 680 nm are observed.…”

“…However, there are some drawbacks to these combinations, for example, white-emitting color changes with input powder and temperature, low color rendering index and low color reproducibility [3,4]. In addition, W-LEDs are fabricated by using two or three different kinds of phosphors and reabsorption of emission wavelengths leads to a decrease in luminous efficiency [5].…”

Nanorods of white light emitting Sr2SiO4:Eu2+: microemulsion-based synthesis, EPR, photoluminescence, and thermoluminescence studies

“…[8] Few reports are also available on the solgel synthesis of strontium silicate. [9][10][11][12] Among all the chemical processes, the microemulsion processing (reverse micelle synthesis) has been demonstrated as a very versatile and reproducible method. [13][14][15][16] The main idea behind this technique is that by appropriate control of the synthesis parameters one can use these nanoreactors to produce tailor-made products down to a nanoscale level with new and special properties.…”