Intense ∼1.2 μm emission from Ho3+/Y3+ ions co-doped oxyfluoride glass-ceramics containing BaF2 nanocrystals

Structural and luminescence properties of silica powders and transparent glass‐ceramics containing LaF3:Eu3+ nanocrystals

“…The infrared luminescence was recorded both for Nd 3+ ‐doped (BaNdF 5 , Ba 2 NdF 7 , NaLaF 4 :Nd 3+ , β‐PbF 2 :Nd 3+ ) as well as Tm 3+ ‐doped (β‐PbF 2 :Tm 3+ ) nanofluoride materials . Moreover, the Yb 3+ /Er 3+ , Yb 3+ /Tm 3+ as well as Ho 3+ /Y 3+ co‐doped fluoride nanocrystalline systems exhibit bright up‐conversion luminescence under the λ exc = 980 nm excitation. Among all nanofluoride systems, many works are concentrated on AF 3 :RE 3+ type, for example, YF 3 :Eu 3+ , LaF 3 :Pr 3+ , GdF 3 :Pr 3+ , YF 3 :Pr 3+ , LaF 3 :Tb 3+ , LaF 3 :Eu 3+ , YF 3 :Yb 3+ /Er 3+ .…”

Laser precipitation of PbS quantum dots in glass rods to achieve broadband near‐infrared emission

“…[1][2][3] Many combinations of rare-earth (RE) ions have been failed to meet this goal, due to their narrow emission bandwidths and difficulties in controlling multiphonon relaxation in some RE ions. [4][5][6][7] Bismuth-doped and nickel-doped glasses and glass-ceramics with broad near-infrared emissions also have been reported. [8][9][10][11] Bandwidth of these glasses are 1000 ~ 1600 nm (bismuth) when excited at wavelength λ = 808 nm and 1200 ~ 2400 nm (nickel) when excited at λ = 405 nm.…”

“…Broadband amplifiers that cover the low‐loss transmission window of silica fiber (1.2‐1.7 μm) have been actively investigated to increase the transmission capacity of fiber‐optic communication systems . Many combinations of rare‐earth (RE) ions have been failed to meet this goal, due to their narrow emission bandwidths and difficulties in controlling multiphonon relaxation in some RE ions . Bismuth‐doped and nickel‐doped glasses and glass‐ceramics with broad near‐infrared emissions also have been reported .…”

Transparent Na5Gd9F32:Er3+ glass-ceramics: enhanced up-conversion luminescence and applications in optical temperature sensors

“…Fluoride nanocrystal-based oxyuoride glass-ceramics, a new type of nanocomposite material, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] have received much interest in recent years. Generally, glass-ceramics are fabricated by a traditional melt-quenching technique with subsequent crystallization processes.…”

“…That is to say that glass-ceramics combine the high chemical, mechanical and thermal stability of glasses with the low phonon energy and strong crystal eld environment of uoride nanocrystals. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] Inspiringly, doped rare earth (RE) ions will preferentially get incorporated into the as-synthesized uoride nanocrystals phase [8][9][10][11][12][13][14][15][16][17] and exhibit excellent luminescent behavior, which makes RE ion-doped uoride glass-ceramics potential candidates for optoelectronic devices, such as in lighting, 22 multicolor displays, 11 sensors 15 and scintillators. 23 In this case, numerous RE uoride glass-ceramics have been fabricated and explored, such as La, Gd, Yb, Lu and Y-based uoride glassceramics.…”