Down-conversion luminescence transparent glass ceramic with theoretical quantum yield of more than 1 and preparation method thereof
A technology of transparent glass and quantum yield, which is applied in the field of near-infrared quantum tailoring to convert luminescent transparent glass ceramics and its preparation technology, can solve the problems of poor transparency, serious scattering, and restrictions on the practical application of solar cells, and achieve low cost and high production efficiency. The effect of simple process, good mechanical properties and thermal stability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
example 1
[0017] Example 1: Analytical pure SiO 2 、Al 2 o 3 , NaF, YF 3 Powder and 99.99% HoF 3 with YbF 3 Powder, according to 44SiO 2 -28Al 2 o 3 -17YF 3 -9.9NaF-0.1HoF 3 -1YbF 3 (Molar ratio) is accurately weighed and placed in an agate mortar, ground for more than half an hour to make it evenly mixed, then placed in a platinum crucible, heated to 1450°C in a program-controlled high-temperature box-type resistance furnace, and then kept for 2 hours Make it melt, and then quickly pour the melt into a copper mold to cool and shape to obtain a precursor glass; put the precursor glass into a resistance furnace, anneal at 500°C for 2 hours and then cool with the furnace to eliminate internal stress. The annealed glass was kept at 670°C for 6 hours to partially crystallize it to obtain transparent glass ceramics.
[0018] Powder X-ray diffraction pattern ( figure 1 ) analysis shows that the crystal phase precipitated in the inorganic glass matrix is a single YF 3 Orthorhombi...
example 2
[0019] Example 2: Analytical pure SiO 2 、Al 2 o 3 , NaF, YF 3 Powder and 99.99% HoF3 with YbF 3 Powder, according to 45SiO 2 -30Al 2 o 3 -10YF 3 -14.3NaF-0.2HoF 3 -0.5YbF 3 (Molar ratio) is accurately weighed and placed in an agate mortar, ground for more than half an hour to make it evenly mixed, then placed in a platinum crucible, heated to 1500°C in a program-controlled high-temperature box-type resistance furnace, and then kept for 5 hours Make it melt, and then quickly pour the melt into a copper mold to cool and shape to obtain a precursor glass; put the precursor glass into a resistance furnace, anneal at 500°C for 2 hours and then cool with the furnace to eliminate internal stress. The annealed glass was kept at 670°C for 4 hours to partially crystallize it to obtain transparent glass ceramics. The sample was polished and measured at room temperature with a FLS920 fluorescence spectrometer. Under the excitation condition of 488 nm, Yb was observed 3+ : 2 f ...
example 3
[0020] Example 3: Analytical pure SiO 2 、Al 2 o 3 , NaF, YF 3 Powder and 99.99% HoF 3 with YbF 3 Powder, according to 50SiO 2 -24Al 2 o 3 -12YF 3 -13.85NaF-0.05HoF 3 -0.1YbF 3 (Molar ratio) is accurately weighed and placed in an agate mortar, ground for more than half an hour to make it evenly mixed, then placed in a platinum crucible, heated to 1400°C in a program-controlled high-temperature box-type resistance furnace, and then kept for 4 hours Make it melt, and then quickly pour the melt into a copper mold to cool and shape to obtain a precursor glass; put the precursor glass into a resistance furnace, anneal at 500°C for 2 hours and then cool with the furnace to eliminate internal stress. The annealed glass was kept at 670°C for 2 hours to partially crystallize it to obtain transparent glass ceramics. The sample was polished and measured at room temperature with a FLS920 fluorescence spectrometer. Under the excitation condition of 488 nm, Yb was observed 3+ : ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More