Efficient green upconversion luminescence in highly crystallized ultratransparent nano-glass ceramics containing isotropic KY3F10 nanocrystals.

Yb3+/Er3+ co-doped nano-glass ceramics (GCs) containing isotropic KY3F10 nanocrystals (NCs) are obtained from a simple ternary oxyfluoride glass by controlled crystallization. The nano-GCs thus obtained, albeit having very large crystallinity of ∼35%, are ultratransparent in the whole visible-light wavelength region of 300-700 nm. Remarkably enhanced green upconversion luminescence (UCL) of Er3+ (by 55 times) is observed in the nano-GCs as compared to the precursor glass. Absolute quantum efficiency of the green UCL reaches as high as 0.41±0.02% in the GCs under 10  W/cm2 power density. The UCL efficiency is comparable to that of the famous ZBLAN: Yb3+/Er3+ glass and GCs containing β-NaYF4:Yb3+/Er3+ NCs, and nearly twice as large as that of GCs containing KYF4:Yb3+/Er3+ NCs under the same excitation conditions.

[1]  Jianzhong Zhang,et al.  Ultrabright single-band red upconversion luminescence in highly transparent fluorosilicate glass ceramics containing KMnF3 perovskite nanocrystals. , 2019, Optics letters.

[2]  T. Fan,et al.  Effect of radiation trapping on fluorescence lifetime and emission cross section measurements in solid-state laser media. , 1994, Optics letters.

[3]  Lirong Zheng,et al.  Controlling Selective Doping and Energy Transfer between Transition Metal and Rare Earth Ions in Nanostructured Glassy Solids , 2018 .

[4]  P. Metz,et al.  Deep red diode-pumped Pr³⁺:KY₃F₁₀ continuous-wave laser. , 2015, Optics letters.

[5]  A. Speghini,et al.  Structural and optical investigation of colloidal Ln3+/Yb3+ co-doped KY3F10 nanocrystals , 2009 .

[6]  M. Tonelli,et al.  Continuous-wave mid-infrared laser operation of Tm3+:KY3F10 at 2.3  μm. , 2019, Optics letters.

[7]  M. E. Borges,et al.  Heavy rare-earth-doped ZBLAN glasses for UV–blue up-conversion and white light generation , 2013 .

[8]  H. Jenssen,et al.  Properties of a new, efficient, blue-emitting material for applications in upconversion displays: Yb, Tm:KY3F10. , 2004, Applied optics.

[9]  Ronghua Jian,et al.  Up-conversion luminescence and photo-thermal effect of KY3F10:Yb3+,Ho3+ nanocrystals , 2018, Journal of Physics D: Applied Physics.

[10]  Jincheng Du,et al.  Phase‐Selective Nanocrystallization of NaLnF4 in Aluminosilicate Glass for Random Laser and 940 nm LED‐Excitable Upconverted Luminescence , 2018 .

[11]  Marc Eichhorn,et al.  Continuous-wave and Q-switched operation of a resonantly pumped Ho³⁺:KY₃F₁₀ laser. , 2014, Optics letters.

[12]  J. Méndez‐Ramos,et al.  Novel Sol–Gel Nano‐Glass–Ceramics Comprising Ln3+‐Doped YF3 Nanocrystals: Structure and High Efficient UV Up‐Conversion , 2011 .

[13]  M. Body,et al.  Insight into the factors influencing NMR parameters in crystalline materials from the KF-YF3 binary system. , 2019, Dalton transactions.

[14]  M. Kumke,et al.  Analysing the effect of the crystal structure on upconversion luminescence in Yb3+,Er3+-co-doped NaYF4 nanomaterials , 2015 .

[15]  A. Yoshikawa,et al.  Growth and optical properties of Pr,Yb-codoped KY3F10 fluoride single crystals for up-conversion visible luminescence , 2007 .

[16]  Liping Chen,et al.  Optical thermometry based on up-conversion luminescence behavior of self-crystallized K3YF6:Er3+ glass ceramics , 2016 .

[17]  Hongwei Lu,et al.  Tunable upconversion luminescence in self-crystallized Er(3+):K(Y(1-x)Yb(x))3F10 nano-glass-ceramics. , 2015, Physical chemistry chemical physics : PCCP.

[18]  Hirotoshi Sato,et al.  Spectroscopic properties, concentration quenching, and prediction of infrared laser emission of Yb 3+ -doped KY 3 F 10 cubic crystal , 2007 .

[19]  W. Lu,et al.  Integration of nanoscale light emitters: an efficient ultraviolet and blue random lasing from NaYF4:Yb/Tm hexagonal nanocrystals , 2018, Photonics Research.

[20]  Jincheng Du,et al.  Enhanced single-mode fiber laser emission by nano-crystallization of oxyfluoride glass-ceramic cores , 2019, Journal of Materials Chemistry C.