[1] DUAN Chengchen, LIANG Liuen, LI Li et al. Recent progress in up-conversion luminescence nanomaterials for biomedical applications[J]. Journal of Materials Chemistry B, 6, 192-209(2018).

[2] CHAI Ruitao, LIAN Hongzhou, CHENG Ziyong et al. Preparation and characterization of up-conversion luminescent NaYF4: Yb, Er (Tm)/PS bulk transparent nanocomposites through in situ polymerization[J]. Journal of Colloid and Interface Science, 345, 262-268(2010).

[3] DU Peng, YU J S. Near-infrared light-triggered visible upconversion emissions in Er3+/Yb3+ co-doped Y2Mo4O15 microparticles for simultaneous noncontact optical thermometry and solid-state lighting[J]. Industrial & Engineering Chemistry Research, 57, 13077-13086(2018).

[4] ZHANG Jia, CHEN Jiajun, ZHANG Yining et al. Yb3+/Tm3+ and Yb3+/Ho3+ doped NaY9(SiO4)6O2 phosphors: up-conversion luminescence processes, temperature-dependent emission spectra and optical temperature-sensing properties[J]. Journal of Alloys and Compounds, 860, 158473(2021).

[5] ZHANG Zhao, MA Ningning, KANG Xiena et al. Switchable up and down-conversion luminescent properties of Nd(III)-nanopaper for visible and near-infrared anti-counterfeiting[J]. Carbohydrate Polymers, 252, 117134(2020).

[7] SHAO Jinzhu, WANG Mitang, LIU Zhaogang et al. Prepared Zn2+ doped NaAlSiO4: Er3+,Yb3+ microcrystalline glass and up-conversion luminescence performance[J]. Journal of Functional Materials, 52, 05135-05165(2021).

[8] WANG Shiping, ZHANG Bingye, LI Ying et al. High quality up-conversion luminescence and excellent thermal stability of Yb3+, Er3+ co-doped Sr3NaY(PO4)3F phosphors[J]. Materials Research Bulletin, 140, 111306(2021).

[9] KACZMAREK A M, KACZMAREK M K, Van DEUN R. Er3+ to Yb3+ and Pr3+ to Yb3+ energy transfer for highly efficient near-infrared cryogenic optical temperature sensing[J]. Nanoscale, 11, 833-837(2019).

[10] WANG Linxiang, Juan TUO, YE Ying et al. Preparation and luminescence properties of Li+, Zn2+, Mg2+ doped Lu2O3: Er3+ phosphors[J]. Chinese Optics, 12, 112-121(2019).

[11] XU Boxu, DONG Guangzong, LIU Juncheng et al. The luminescence regulation effect of Na+ on the Yb3+/Er3+ co-doped Y2O3 up-conversion films[J]. Journal of Luminescence, 203, 16-25(2018).

[12] JI Heming, TANG Jiale, TANG Xunze et al. Enhanced up-conversion emissions of NaNbO3: Er3+/Yb3+ nanocrystals via Mg2+ ions doping[J]. Materials Letters, 302, 130348(2021).

[13] HUANG Zhangyu, YI Mengji, GAO Huiping et al. Enhancing single red band upconversion luminescence of KMnF3: Yb3+/Er3+ nanocrystals by Mg2+ doping[J]. Journal of Alloys and Compounds, 694, 241-245(2017).

[14] IZABELA K, ALEKSANDRA W, PRZEMYSŁAW K et al. Synthesis and characterization of Gd2O3: Er3+, Yb3+ doped with Mg2+, Li+ ions-effect on the photoluminescence and biological applications[J]. Nanotechnology, 32, 20-24(2021).

[15] HUA Yongbin, DU Peng, YU J S. Synthesis and luminescent properties of Er3+ activated LaBMoO6 green-emitting phosphors for optical thermometry[J]. Materials Research Bulletin, 107, 314-320(2018).

[16] BLASSE G. Energy transfer in oxidic phosphors[J]. Physics Letters A, 28, 444-445(1968).

[17] DEXTER D L. A Theory of sensitized luminescence in solids[J]. Journal of Chemical Physics, 21, 836-850(1953).

[18] SUNITHA D V, NAGABHUSHANA H, SINGH F et al. Ion beam induced amorphization and bond breaking in Zn2SiO4: Eu3+ nanocrystalline phosphor[J]. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 90, 18-21(2012).

[19] CUI Hongqiang, CAO Yongze, ZHANG Yuhang et al. Thermal enhancement of up-conversion luminescence in Lu2W2.5Mo0.5O12: Er3+, Yb3+ phosphors[J]. Ceramics International, 47, 21271-21275(2021).

[20] REMYA M P, SUBASH G, VIDYADHARAN V et al. Synthesis and luminescence characteristics of CaB2O4: Er3+, Li+ phosphor[J]. Journal of Luminescence, 187, 113-120(2017).