[1] Pearce J M S. A brief history of the clinical thermometer[J]. QJM: An International Journal of Medicine, 95, 251-252(2002).

[2] Wang C L, Jin Y H, Zhang R T et al. A review and outlook of ratiometric optical thermometer based on thermally coupled levels and non-thermally coupled levels[J]. Journal of Alloys and Compounds, 894, 162494(2022).

[3] Khan M A, Allemand C, Eagar T W. Noncontact temperature measurement. I. Interpolation based techniques[J]. Review of Scientific Instruments, 62, 392-402(1991).

[4] Bednarkiewicz A, Marciniak L, Carlos L D et al. Standardizing luminescence nanothermometry for biomedical applications[J]. Nanoscale, 12, 14405-14421(2020).

[5] Liu C, Yu M, Liu X Y et al. Optical thermometry based on transparent KLu2F7∶Er3+/Yb3+-nanostructural glass-ceramics[J]. Laser & Optoelectronics Progress, 59, 1516022(2022).

[6] Zhang D Y, Luo Y X, Chen J Y et al. A dual-mode optical thermometer based on dual-excitation Bi3+, Sm3+ co-doped Y4GeO8 phosphors[J]. Journal of Rare Earths, 42, 1437-1446(2024).

[7] Ruxiangul A, Sun Y M, Kuerbanjiang N et al. Preparation and optical properties of Bi2Ga3.985O9∶1.5%Fe3+, Eu3+ persistent luminescent nanoparticles[J]. Acta Optica Sinica, 44, 0216001(2024).

[8] Feng M J, Li L J, Guo J J et al. Multi-mode temperature sensing of Lu2WO6∶Er3+, Yb3+ up-conversion materials[J]. Journal of the American Ceramic Society, 107, 4766-4776(2024).

[9] Dramićanin M D. Trends in luminescence thermometry[J]. Journal of Applied Physics, 128, 040902(2020).

[10] Zhang B B, Guo X J, Zhang Z L et al. Luminescence thermometry with rare earth doped nanoparticles: status and challenges[J]. Journal of Luminescence, 250, 119110(2022).

[11] Brites C D S, Marin R, Suta M et al. Spotlight on luminescence thermometry: basics, challenges, and cutting-edge applications[J]. Advanced Materials, 35, e2302749(2023).

[12] Guo H Z, Bayer T J M, Guo J et al. Current progress and perspectives of applying cold sintering process to ZrO2-based ceramics[J]. Scripta Materialia, 136, 141-148(2017).

[13] Lu Y, Ma Y X, Zhu J et al. Molten salt synthesis and upconversion of cubic ZrO2 submicron phosphors for temperature sensor and anticounterfeit applications[J]. Crystal Growth & Design, 24, 499-505(2024).

[14] Wang X Y, Tan X J, Xu S L et al. Preparation and up-conversion luminescence of Er-doped yttria stabilized zirconia single crystals[J]. Journal of Luminescence, 219, 116896(2020).

[15] Tan X J, Xu S L, Zhang L et al. Preparation and optical properties of Ho3+-doped YSZ single crystals[J]. Applied Physics A, 124, 853(2018).

[16] Han Y D, Zhang X X, Gao X Q et al. Pursuing reliability and sensitivity of Pr3+ fluorescence temperature sensing: through the lens of excitation strategy[J]. Advanced Optical Materials, 12, 2401559(2024).

[17] Chen Y, Chen J Y, Luo Y X et al. Ba2LuNbO6∶Er3+, Yb3+ up-conversion phosphors for dual-mode thermometry based on fluorescence intensity ratio[J]. Journal of the American Ceramic Society, 107, 8246-8255(2024).

[18] Suo H, Zhao X Q, Zhang Z Y et al. Rational design of ratiometric luminescence thermometry based on thermally coupled levels for bioapplications[J]. Laser & Photonics Reviews, 15, 2000319(2021).

[19] Luo Y X, Chen Y, Li L J et al. Three-mode fluorescence thermometers based on double perovskite Ba2GdNbO6∶Eu3+, Mn4+ phosphors[J]. Ceramics International, 49, 38007-38014(2023).

[20] Yang A P, Zhou H Y, Fang J et al. Strong interference-resistant flexible fluorescent fiber optic temperature sensor based on fluorescence intensity ratio technology[J]. Laser & Optoelectronics Progress, 60, 1316005(2023).

[21] Zhang H, Ye J T, Wang X L et al. Highly reliable all-fiber temperature sensor based on the fluorescence intensity ratio (FIR) technique in Er3+/Yb3+ co-doped NaYF4 phosphors[J]. Journal of Materials Chemistry C, 7, 15269-15275(2019).

[22] van Swieten T P, Yu D C, Yu T et al. A Ho3+-based luminescent thermometer for sensitive sensing over a wide temperature range[J]. Advanced Optical Materials, 9, 2001518(2021).

[23] Hasegawa T, Takahashi Y, Goto T et al. Er3+/Tm3+ co-doped Zr0.85Y0.15O1.925∶Yb3+ phosphors: dual-mode ratiometric thermometry based on near infrared up-conversion/down-shifting photoluminescence[J]. Dalton Transactions, 53, 13617-13627(2024).

[24] Yin H J, Feng Y S, Liang N et al. Boosting photo upconversion in electropolymerised thin film with Yb/Er complexes[J]. Advanced Optical Materials, 11, 2202550(2023).

[25] Mita Y, Togashi M, Yamamoto H. Energy transfer processes in rare-earth-ion-doped materials[J]. Journal of Luminescence, 87, 1026-1028(2000).

[26] Pisarska J, Lisiecki R, Ryba-Romanowski W et al. Up-converted luminescence in Yb-Tm co-doped lead fluoroborate glasses[J]. Journal of Alloys and Compounds, 451, 226-228(2008).

[27] Wang Z J, Christiansen J, Wezendonk D et al. Thermal enhancement and quenching of upconversion emission in nanocrystals[J]. Nanoscale, 11, 12188-12197(2019).

[28] Zhou Y H, Cheng Y, Huang Q G et al. Abnormal thermally enhanced upconversion luminescence of lanthanide-doped phosphors: proposed mechanisms and potential applications[J]. Journal of Materials Chemistry C, 9, 2220-2230(2021).

[29] Binnemans K. Lanthanide-based luminescent hybrid materials[J]. Chemical Reviews, 109, 4283-4374(2009).

[30] Tu D T, Liu D L, Ju D Q et al. Time-resolved FRET biosensor based on amine-functionalized lanthanide-doped NaYF4 nanocrystals[J]. Angewandte Chemie International Edition, 50, 6306-6310(2011).

[31] Zhang Q H, Li L, Liu F W et al. Optical thermometry of Tm3+/Yb3+ co-doped Ba3Gd2F12 up-conversion glass-ceramic with high sensitivity[J]. Journal of Solid State Chemistry, 308, 122927(2022).

[32] Zhang X, Zheng H H, Hu J X et al. Enhanced up-conversion luminescence and temperature sensing property of Ba3-xSrxLu4O9∶Tm3+/Yb3+ phosphors[J]. Ceramics International, 47, 32290-32296(2021).

[33] Liu X L, Cao L, Mi X Y et al. Improvement on upconversion luminescence and temperature detection of NaBiF4∶Tm3+/Yb3+ by introducing Lu3+[J]. Materials Research Bulletin, 176, 112822(2024).

[34] Sharma A K, Nair G B, Dhoble S J et al. Luminescence thermometry based on the upconversion luminescence from the stark sublevels of BaY2F8∶Yb3+, Tm3+ phosphor[J]. Journal of Fluorescence, 34, 1039-1048(2024).

[35] Zhou H L, Zhu K S, Wang J et al. Effects of Yb3+ concentration on up-conversion luminescence and temperature sensing characteristics of Tm3+/Yb3+∶Y2O3 phosphors[J]. Journal of Alloys and Compounds, 918, 165674(2022).

[36] Lisiecki R, Ryba-Romanowski W. Silica-based oxyfluoride glass and glass-ceramic doped with Tm3+ and Yb3+-VUV-VIS-NIR spectroscopy and optical thermometry[J]. Journal of Alloys and Compounds, 814, 152304(2020).