La2Hf2O7 system inorganic luminous material and preparation method thereof
A luminescent material and inorganic technology, applied in luminescent materials, luminescent coatings, chemical instruments and methods, etc., can solve the problems of difficult optical anti-counterfeiting label materials and easy imitation of fluorescent characteristics.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 6
[0135] Add 1.52 mmol of lanthanum nitrate, 0.3 mmol of ytterbium nitrate, 0.18 mmol of europium nitrate, 0.002 mmol of erbium nitrate and 2 mmol of citric acid into 8 ml of ethanol, stir for 30 minutes; then add 2 mmol of hafnium acetylacetonate and Stir for 30 minutes; at 50 o The temperature of C was incubated for 2 hours to obtain the xerogel; the xerogel was ground for 30 minutes, then placed in a muffle furnace, at 700 o C was kept warm for 4 hours, and the final product was obtained after cooling with the furnace.
[0136] Powder X-ray diffraction analysis shows that: the obtained product is pure cubic phase La 2 f 2 o 7 ( figure 1 ). Under 980nm laser irradiation, Yb / Er / Eu: La 2 f 2 o 7 Can get Er 3+ Ions emit bright green light with faint Eu in the spectrum 3+ Luminescence band ( figure 2 ). at 298nm ( image 3 ), 365nm ( Figure 4 ) with 415nm ( Figure 5 ) under xenon lamp excitation conditions, Eu 3+ Bright red light is emitted.
Embodiment 2
[0138] Add 1.68 mmol of lanthanum nitrate, 0.2 mmol of ytterbium nitrate, 0.12 mmol of europium nitrate, 0.005 mmol of erbium nitrate and 2 mmol of citric acid into 8 ml of ethanol, stir for 30 minutes; then add 2 mmol of hafnium acetylacetonate and Stir for 30 minutes; heat at 50°C for 2 hours to obtain dry gel; grind the dry gel for 30 minutes, then put it in a muffle furnace, keep it at 700°C for 4 hours, and cool down with the furnace to obtain the final product.
Embodiment 3
[0140] Add 1.42 mmol of lanthanum nitrate, 0.5 mmol of ytterbium nitrate, 0.08 mmol of europium nitrate, 0.001 mmol of erbium nitrate and 2 mmol of citric acid into 8 ml of ethanol, stir for 30 minutes; then add 2 mmol of hafnium acetylacetonate and Stir for 30 minutes; heat at 50°C for 2 hours to obtain dry gel; grind the dry gel for 30 minutes, then put it in a muffle furnace, keep it at 700°C for 4 hours, and cool down with the furnace to obtain the final product.
PUM
Login to view more Abstract
Description
Claims
Application Information
Login to view more - R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap