Research output: Contribution to journal › Article › peer-review
Fabrication of microcrystalline NaPbLa(WO4)3 : Yb3+/Ho3+(x = Yb3+/Ho3+ phosphors and their upconversion photoluminescent characteristics. / Lim, Chang Sung; Atuchin, Victor V.; Aleksandrovsky, Aleksandr S. et al.
In: Korean Journal of Materials Research, Vol. 29, No. 12, 01.12.2019, p. 741-746.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Fabrication of microcrystalline NaPbLa(WO4)3
T2 - Yb3+/Ho3+(x = Yb3+/Ho3+ phosphors and their upconversion photoluminescent characteristics
AU - Lim, Chang Sung
AU - Atuchin, Victor V.
AU - Aleksandrovsky, Aleksandr S.
AU - Denisenko, Yuriy G.
AU - Molokeev, Maxim S.
AU - Oreshonkov, Aleksandr S.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - New triple tungstate phosphors NaPbLa(WO4)3:Yb3+/Ho3+ (x = Yb3+/Ho3+ = 7, 8, 9, 10) are successfully fabricated by microwave assisted sol-gel synthesis and their structural and frequency upconversion (UC) characteristics are investigated. The compounds crystallized in the tetragonal space group I41/a and the NaPbLa(WO4)3 host have unit cell parameters a = 5.3927(1) and c = 11.7961(3) A, V = 343.05(2) A3, Z = 4. Under excitation at 980 nm, the phosphors have yellowish green emissions, which are derived from the intense 5S2/ 5F4 → 5I8 transitions of Ho3+ ions in the green spectral range and strong 5F5 → 5I8 transitions in the red spectral range. The optimal Yb3+:Ho3+ ratio is revealed to be x = 9, which is attributed to the quenching effect of Ho3+ ions, as indicated by the composition dependence. The UC characteristics are evaluated in detail under consideration of the pump power dependence and Commission Internationale de L'Eclairage chromaticity. The spectroscopic features of Raman spectra are discussed in terms of the superposition of Ho3+ luminescence and vibrational lines. The possibility of controlling the spectral distribution of UC luminescence by the chemical content of tungstate hosts is demonstrated.
AB - New triple tungstate phosphors NaPbLa(WO4)3:Yb3+/Ho3+ (x = Yb3+/Ho3+ = 7, 8, 9, 10) are successfully fabricated by microwave assisted sol-gel synthesis and their structural and frequency upconversion (UC) characteristics are investigated. The compounds crystallized in the tetragonal space group I41/a and the NaPbLa(WO4)3 host have unit cell parameters a = 5.3927(1) and c = 11.7961(3) A, V = 343.05(2) A3, Z = 4. Under excitation at 980 nm, the phosphors have yellowish green emissions, which are derived from the intense 5S2/ 5F4 → 5I8 transitions of Ho3+ ions in the green spectral range and strong 5F5 → 5I8 transitions in the red spectral range. The optimal Yb3+:Ho3+ ratio is revealed to be x = 9, which is attributed to the quenching effect of Ho3+ ions, as indicated by the composition dependence. The UC characteristics are evaluated in detail under consideration of the pump power dependence and Commission Internationale de L'Eclairage chromaticity. The spectroscopic features of Raman spectra are discussed in terms of the superposition of Ho3+ luminescence and vibrational lines. The possibility of controlling the spectral distribution of UC luminescence by the chemical content of tungstate hosts is demonstrated.
KW - Microwave assisted sol-gel
KW - Triple tungstate
KW - Upconversion characteristics
KW - Yellowish green phosphor
KW - upconversion characteristics.
KW - MODULATED STRUCTURE
KW - YB3+
KW - LUMINESCENCE PROPERTIES
KW - microwave assisted sol-gel
KW - yellowish green phosphor
KW - triple tungstate
UR - http://www.scopus.com/inward/record.url?scp=85079689977&partnerID=8YFLogxK
U2 - 10.3740/MRSK.2019.29.12.741
DO - 10.3740/MRSK.2019.29.12.741
M3 - Article
AN - SCOPUS:85079689977
VL - 29
SP - 741
EP - 746
JO - Korean Journal of Materials Research
JF - Korean Journal of Materials Research
SN - 1225-0562
IS - 12
ER -
ID: 23826059