[1] Manley M. Near-infrared spectroscopy and hyperspectral imaging: non-destructive analysis of biological materials[J]. Chemical Society Reviews, 43, 8200-8214(2014).

[2] Wang Q, Dai Y N, Xu J Z et al. All-in-one phototheranostics: single laser triggers NIR-II fluorescence/photoacoustic imaging guided photothermal/photodynamic/chemo combination therapy[J]. Advanced Functional Materials, 29, 1901480(2019).

[3] Rajendran V, Fang M H, de Guzman G N et al. Super broadband near-infrared phosphors with high radiant flux as future light sources for spectroscopy applications[J]. ACS Energy Letters, 3, 2679-2684(2018).

[4] Qiao J W, Zhou G J, Zhou Y Y et al. Divalent europium-doped near-infrared-emitting phosphor for light-emitting diodes[J]. Nature Communications, 10, 5267(2019).

[5] Chen X Z, Li Y, Huang K et al. Trap energy upconversion-like near-infrared to near-infrared light rejuvenateable persistent luminescence[J]. Advanced Materials, 33, e2008722(2021).

[6] Song J, Sun L L, Geng H C et al. Near-infrared light-triggered β-NaYF4∶Yb, Tm, Gd@MIL-100(Fe) nanomaterials for antibacterial applications[J]. New Journal of Chemistry, 46, 4806-4813(2022).

[7] Luan X W, Pan Y C, Gao Y F et al. Recent near-infrared light-activated nanomedicine toward precision cancer therapy[J]. Journal of Materials Chemistry B, 9, 7076-7099(2021).

[8] Francés-Soriano L, Ferrera-González J, González-Béjar M et al. Near-infrared excitation/emission microscopy with lanthanide-based nanoparticles[J]. Analytical and Bioanalytical Chemistry, 414, 4291-4310(2022).

[9] Afara I O, Shaikh R, Nippolainen E et al. Characterization of connective tissues using near-infrared spectroscopy and imaging[J]. Nature Protocols, 16, 1297-1329(2021).

[10] Fuchi S, Shimizu Y, Watanabe K et al. Ultrawide-band near-infrared light source over 1 mW by Sm3+, Pr3+-codoped glass phosphor combined with LED[J]. Applied Physics Express, 7, 072601(2014).

[11] Suo H, Wang Y, Zhao X Q et al. Rapid nondestructive detection enabled by an ultra-broadband NIR pc-LED[J]. Laser & Photonics Reviews, 16, 2200012(2022).

[12] Nair G B, Swart H C, Dhoble S J. A review on the advancements in phosphor-converted light emitting diodes (pc-LEDs): Phosphor synthesis, device fabrication and characterization[J]. Progress in Materials Science, 109, 100622(2020).

[13] Zhang Q, Wang X C, Tang Z B et al. A K3ScSi2O7: Eu2+ based phosphor with broad-band NIR emission and robust thermal stability for NIR pc-LEDs[J]. Chemical Communications, 56, 4644-4647(2020).

[14] Hou D J, Zheng S M, Lin Z S et al. A Mn4+ activated (Gd, La)2(Zn, Mg)TiO6 deep-red emission phosphor: the luminescence properties and potential application for full-spectrum pc-LEDs[J]. Journal of Luminescence, 247, 118895(2022).

[15] Chen J Y, Guo C F, Yang Z et al. Li2SrSiO4: Ce3+, Pr3+ phosphor with blue, red, and near-infrared emissions used for plant growth LED[J]. Journal of the American Ceramic Society, 99, 218-225(2016).

[16] Benayas A, del Rosal B, Pérez-Delgado A et al. Nd: YAG near-infrared luminescent nanothermometers[J]. Advanced Optical Materials, 3, 687-694(2015).

[17] Nyk M, Kumar R, Ohulchanskyy T Y et al. High contrast in vitro and in vivo photoluminescence bioimaging using near infrared to near infrared up-conversion in Tm3+ and Yb3+ doped fluoride nanophosphors[J]. Nano Letters, 8, 3834-3838(2008).

[18] Du J R, De Clercq O Q, Korthout K et al. LaAlO3: Mn4+ as near-infrared emitting persistent luminescence phosphor for medical imaging: a charge compensation study[J]. Materials, 10, 1422(2017).

[19] Feng G F, Zhou S F, Bao J X et al. Transparent Ni2+-doped lithium aluminosilicate glass-ceramics with broadband infrared luminescence[J]. Journal of Alloys and Compounds, 457, 506-509(2008).

[20] Zhang L L, Zhang S, Hao Z D et al. A high efficiency broad-band near-infrared Ca2LuZr2Al3O12∶Cr3+ garnet phosphor for blue LED chips[J]. Journal of Materials Chemistry C, 6, 4967-4976(2018).

[21] Zabiliūtė A, Butkutė S, Žukauskas A et al. Sol-gel synthesized far-red chromium-doped garnet phosphors for phosphor-conversion light-emitting diodes that meet the photomorphogenetic needs of plants[J]. Applied Optics, 53, 907-914(2014).

[22] Djellabi R, Su P D, Elimian E A et al. Advances in photocatalytic reduction of hexavalent chromium: from fundamental concepts to materials design and technology challenges[J]. Journal of Water Process Engineering, 50, 103301(2022).

[23] Dalal U, Reddy S N. A novel nano zero-valent iron biomaterial for chromium (Cr6+ to Cr3+) reduction[J]. Environmental Science and Pollution Research, 26, 10631-10640(2019).

[24] Dharnaik A S, Ghosh P K. Hexavalent chromium[Cr(VI)] removal by the electrochemical ion-exchange process[J]. Environmental Technology, 35, 2272-2279(2014).

[25] Basore E T, Xiao W G, Liu X F et al. Broadband near-infrared garnet phosphors with near-unity internal quantum efficiency[J]. Advanced Optical Materials, 8, 2000296(2020).

[26] Fang M H, Huang P Y, Bao Z et al. Penetrating biological tissue using light-emitting diodes with a highly efficient near-infrared ScBO3∶Cr3+ phosphor[J]. Chemistry of Materials, 32, 2166-2171(2020).

[27] Yao L Q, Shao Q Y, Han S Y et al. Enhancing near-infrared photoluminescence intensity and spectral properties in Yb3+ codoped LiScP2O7∶Cr3+[J]. Chemistry of Materials, 32, 2430-2439(2020).

[28] Song Q Q, Liu Z H, Jiang H J et al. The hydrothermally synthesis of K3AlF6∶Cr3+ NIR phosphor and its performance optimization based on phase control[J]. Journal of the American Ceramic Society, 104, 5235-5243(2021).

[29] Lee C, Bao Z, Fang M H et al. Chromium(III)-doped fluoride phosphors with broadband infrared emission for light-emitting diodes[J]. Inorganic Chemistry, 59, 376-385(2020).

[30] Zhang S, Liu Y, Yin J et al. A novel Cr3+-activated far-red titanate phosphor: synthesis, luminescence enhancement and application prospect[J]. Materials Today Chemistry, 24, 100835(2022).

[31] Song E H, Ming H, Zhou Y Y et al. Cr3+-doped Sc-based fluoride enabling highly efficient near infrared luminescence: a case study of K2NaScF6∶Cr3+[J]. Laser & Photonics Reviews, 15, 2000410(2021).

[32] Yu H J, Chen J, Mi R Y et al. Broadband near-infrared emission of K3ScF6∶Cr3+ phosphors for night vision imaging system sources[J]. Chemical Engineering Journal, 417, 129271(2021).

[33] Wu Z X, Han X X, Zhou Y Y et al. Efficient broadband near-infrared luminescence of Cr3+ doped fluoride K2NaInF6 and its NIR-LED application toward veins imaging[J]. Chemical Engineering Journal, 427, 131740(2022).

[34] Yang X, Chen W B, Wang D S et al. Near-infrared photoluminescence and phosphorescence properties of Cr3+-doped garnet-type Y3Sc2Ga3O12[J]. Journal of Luminescence, 225, 117392(2020).

[35] Zhou X Q, Ju G F, Dai T S et al. Endowing Cr3+-doped non-gallate garnet phosphors with near-infrared long-persistent luminescence in weak fields[J]. Optical Materials, 96, 109322(2019).

[36] Bachmann V, Meijerink A, Ronda C. Luminescence properties of SrSi2AlO2N3 doped with divalent rare-earth ions[J]. Journal of Luminescence, 129, 1341-1346(2009).

[37] Qiao J W, Zhao J, Liu Q L et al. Recent advances in solid-state LED phosphors with thermally stable luminescence[J]. Journal of Rare Earths, 37, 565-572(2019).

[38] Ming H, Liu S F, Liu L L et al. Highly regular, uniform K3ScF6∶Mn4+ phosphors: facile synthesis, microstructures, photoluminescence properties, and application in light-emitting diode devices[J]. ACS Applied Materials & Interfaces, 10, 19783-19795(2018).

[39] Salvi A M, Castle J E, Watts J F et al. Peak fitting of the chromium 2p XPS spectrum[J]. Applied Surface Science, 90, 333-341(1995).

[40] Widatallah H M, Al-Harthi S H, Johnson C et al. Formation, cationic site exchange and surface structure of mechanosynthesized EuCrO3 nanocrystalline particles[J]. Journal of Physics D: Applied Physics, 44, 265403(2011).

[41] Song E H, Jiang X X, Zhou Y Y et al. Heavy Mn2+ doped MgAl2O4 phosphor for high-efficient near-infrared light-emitting diode and the night-vision application[J]. Advanced Optical Materials, 7, 1901105(2019).

[42] Shao Q Y, Ding H, Yao L Q et al. Photoluminescence properties of a ScBO3∶Cr3+ phosphor and its applications for broadband near-infrared LEDs[J]. RSC Advances, 8, 12035-12042(2018).