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Morphology control and temperature sensing properties of micro‐rods NaLa(WO 4 ) 2 :Yb 3+ ,Er 3+ phosphors
Author(s) -
Xiao Qi,
Dong Xinyao,
Yin Xiumei,
Wang Hong,
Yu Weiguang,
Zhong Hua,
Xing Mingming,
Tian Ying,
Fu Yao,
Dong Bin,
Luo Xixian
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17426
Subject(s) - phosphor , materials science , luminescence , analytical chemistry (journal) , photon upconversion , rod , ion , crystal (programming language) , excitation , nuclear chemistry , optoelectronics , chemistry , physics , medicine , alternative medicine , chromatography , pathology , organic chemistry , quantum mechanics , computer science , programming language
Uniform spindle‐like micro‐rods NaLa(WO 4 ) 2 :Yb 3+ ,Er 3+ phosphors are prepared by the solvothermal method in the text. Controllable morphology of NaLa(WO 4 ) 2 crystal can be obtained by adjusting the prepared temperature, PH value, complexing agent content, and solvent ratio. Uniform NaLa(WO 4 ) 2 :Yb 3+ ,Er 3+ micro‐rods of 1.8 μm in length and 0.5 μm in width are synthesized at a low temperature of 120°C. The prepared NaLa(WO 4 ) 2 :Yb 3+ ,Er 3+ phosphors present green upconversion luminescence under 980 nm excitation, luminescence intensity reaches to maximum at the Yb 3+ and Er 3+ concentration of 6 and 2 mol%. The temperature performance of the NaLa(WO 4 ) 2 :Yb 3+ ,Er 3+ phosphors are evaluated based on thermal coupling technology. Temperature dependence of the two green emissions ratio of Er 3+ ion is obtained, and the sensitivity of the sample can be calculated, the maximum sensitivity of NaLa(WO 4 ) 2 :Yb 3+ ,Er 3+ is up to 0.019 K −1 at the sample temperature of 564 K.