Designing Ln3+-doped BiF3 particles for luminescent primary thermometry and molecular logic

Abstract

The design of molecular materials suitable for disparate fields could lead to new advances in engineering applications. In this work, a series of Ln3+-doped BiF3 sub-microparticles were synthesized through microwave-assisted synthesis. The effects of doping are evaluated from the structural and morphological viewpoint. In general, increasing the Ln3+ concentration the octahedral habitus is distorted to a spheric one, and some aggregates are visible without any differences in the crystalline phase. The optical response of the samples confirms that the BiF3 materials are suitable hosts for the luminescence of the tested trivalent lanthanide (Ln3+) ions (Ln = Eu, Tb, Tm, Ho, Er, Yb). A Yb3+/Er3+ co-doped sample is presented as an illustrative example of all-photonic molecular logic operations and primary luminescent thermometry.

Lanthanide-based logic: a venture for the future of molecular computing

“…80 Very recently we demonstrated the application of BiF 3 :YbEr sub-micro particles for defining molecular logic operations. 81 We described a molecular chipset of four logic gates (AND, NAND, NOR and NOT) setting as inputs the temperature (logic value 0 for 305 K, and 1 for 360 K) and the power density (logic value of 0 at 5 W cm À2 , and 1 at 111 W cm À2 ). For digitalizing the output, we calculated the intensity of some Stark components of Er 3+ transitions 4 S 3/2 -4 I 15/2 , and 2 H 11/2 -4 I 15/2 (labelled from I 1 to I 6 ), then we defined four ratiometric outputs (R 1-4 ) that allowed us to describe the four logic operations (Fig.…”

A novel Mn2+ doped ScTaO4 dual-emitting phosphor for high temperature optical thermometry

“…[4][5][6][7] In the field of remote optical thermometry, a variety of temperature measurement methods have been developed, including the reflectance intensity ratio (RIR) colorimetric method, excitation intensity ratio (EIR) method, luminescence intensity ratio (LIR) method and so on. [8][9][10][11][12][13][14][15][16][17][18] Among these methods, LIR thermometry has emerged as a prominent research focus due to its high measurement accuracy and immunity to ambient light interference. In the development based on LIR optical thermometers, the majority of LIR optical thermometers for temperature measurement rely on the thermal coupling energy level (TCEL) emission of a single lanthanide (Ln) ion or a transition metal (TM) ion, such as Cr 3+ ( 2 E, 4 T 2 ), 8,[10][11][12] Tm 3+ ( 3 F 3 , 1 G 4 ), 13 Eu 3+ ( 5 D 0 , 5 D 1 ), 14 Er 3+ ( 2 H 11/2 , 4 S 3/2 ) [15][16][17] and so on.…”

“…[8][9][10][11][12][13][14][15][16][17][18] Among these methods, LIR thermometry has emerged as a prominent research focus due to its high measurement accuracy and immunity to ambient light interference. In the development based on LIR optical thermometers, the majority of LIR optical thermometers for temperature measurement rely on the thermal coupling energy level (TCEL) emission of a single lanthanide (Ln) ion or a transition metal (TM) ion, such as Cr 3+ ( 2 E, 4 T 2 ), 8,[10][11][12] Tm 3+ ( 3 F 3 , 1 G 4 ), 13 Eu 3+ ( 5 D 0 , 5 D 1 ), 14 Er 3+ ( 2 H 11/2 , 4 S 3/2 ) [15][16][17] and so on. However, this type of optical thermometer faces challenges, including low relative sensitivity, overlapping emission peaks, and low resolution due to the small band gap between thermal coupling energy levels, limiting its further application.…”

Ultralow pressure sensing and luminescence thermometry based on the emissions of Er3+/Yb3+ codoped Y2Mo4O15 phosphors

“…Moreover, Yb/Er-based thermometers, in principle, serve as primary thermometers, eliminating the need for calibration. 16,17 Recent advancements in Cr 3+ -doped phosphors have also demonstrated their effectiveness in temperature sensing. Furthermore, Cr 3+ -doped materials, like Ruby, have maintained their status as the global standard in pressure-sensing applications.…”