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Ytterbium and up-conversion rare earth luminescent ion double-doped potassium sodium niobate thick film

A technology of rare earth luminescence and potassium sodium niobate, which is applied in the directions of luminescent materials, chemical instruments and methods, and achieves the effects of simple process steps, expanded application scope and good repeatability

Pending Publication Date: 2021-07-23
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research on thick films at home and abroad mainly focuses on lead-based materials, and there are few reports on KNN-based lead-free thick films.

Method used

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  • Ytterbium and up-conversion rare earth luminescent ion double-doped potassium sodium niobate thick film
  • Ytterbium and up-conversion rare earth luminescent ion double-doped potassium sodium niobate thick film
  • Ytterbium and up-conversion rare earth luminescent ion double-doped potassium sodium niobate thick film

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preparation example Construction

[0031] A method for preparing a double-doped potassium sodium niobate thick film with ytterbium and upconversion rare earth luminescent ions, comprising the following steps:

[0032] (1) Self-made niobium source: weigh 7.9825 g niobium pentoxide (Nb 2 o 5 ) was dissolved in 15 mL of hydrofluoric acid (HF), and after reacting at 80°C for 12 h, a light yellow clear solution was obtained as solution A; 25.0325 g of ammonium oxalate ((NH 4 ) 2 C 2 o 4 ·H 2 O), dissolved in deionized water, stirred at 80°C until it was completely dissolved, slowly added liquid A dropwise into the ammonium oxalate solution to obtain an ammonium niobium oxalate solution; adding an appropriate amount of ammonia water to the ammonium niobium oxalate solution to obtain white Nb (OH) 5 After precipitation, several times of centrifugation to remove impurity ions, fresh Nb(OH) 5 The precipitate was placed in an oven and dried at 80°C for 5 h;

[0033] (2) Ingredients: according to the chemical comp...

Embodiment 1

[0042] A method for preparing a double-doped potassium sodium niobate thick film with ytterbium and upconversion rare earth luminescent ions, comprising the following steps:

[0043] (1) Self-made niobium source: weigh 7.9825 g niobium pentoxide (Nb 2 o 5 ) was dissolved in 15 mL of hydrofluoric acid (HF), and after reacting at 80°C for 12 h, a light yellow clear solution was obtained as solution A; 25.0325 g of ammonium oxalate ((NH 4 ) 2 C 2 o 4 ·H 2 O), dissolved in deionized water, stirred at 80°C until it was completely dissolved, slowly added liquid A dropwise into the ammonium oxalate solution to obtain an ammonium niobium oxalate solution; adding an appropriate amount of ammonia water to the ammonium niobium oxalate solution to obtain white Nb (OH) 5 After precipitation, several times of centrifugation to remove impurity ions, fresh Nb(OH) 5 The precipitate was placed in an oven and dried at 80°C for 5 h;

[0044] (2) Ingredients: According to the general formu...

Embodiment 2

[0053] A method for preparing a double-doped potassium sodium niobate thick film with ytterbium and upconversion rare earth luminescent ions, comprising the following steps:

[0054] (1) Self-made niobium source: weigh 7.9825 g niobium pentoxide (Nb 2 o 5 ) was dissolved in 15 mL of hydrofluoric acid (HF), and after reacting at 80°C for 12 h, a light yellow clear solution was obtained as solution A; 25.0325 g of ammonium oxalate ((NH 4 ) 2 C 2 o 4 ·H 2 O), dissolved in deionized water, stirred at 80°C until it was completely dissolved, slowly added liquid A dropwise into the ammonium oxalate solution to obtain an ammonium niobium oxalate solution; adding an appropriate amount of ammonia water to the ammonium niobium oxalate solution to obtain white Nb (OH) 5 After precipitation, several times of centrifugation to remove impurity ions, fresh Nb(OH) 5 The precipitate was placed in an oven and dried at 80°C for 5 h;

[0055] (2) Ingredients: According to the general formu...

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Abstract

The invention discloses an ytterbium and up-conversion rare earth luminescent ion double-doped potassium-sodium niobate thick film and a preparation method thereof.The preparation method comprises the steps that firstly, a niobium source is prepared, then RE3+ / Yb3+ double-doped K0.5Na0. 5NbO3 sol (RE=Er, Ho and Tm) is synthesized, the sol is dried into xerogel, then the xerogel is sintered into nano powder, then a tape casting technology is adopted, pressureless sintering is conducted at the temperature of 950-1050 DEG C, and the RE3+ / Yb3+ double-doped K0.5Na0.5NbO3 thick film which has a pure perovskite structure, a compact structure and fine and uniform crystal grains, and has strong up-conversion luminescence under 980 nm exciting light is obtained. The method is simple in process step, low in cost, good in repeatability and easy to operate, the thickness of the thick film is controllable, and the method is expected to be applied to the fields of microelectronic devices, information communication, clinical medicine and the like.

Description

technical field [0001] The invention belongs to the field of rare-earth-doped lead-free piezoelectric materials, and relates to a double-doped potassium-sodium niobate thick film of ytterbium and up-conversion rare-earth luminescent ions and a preparation method thereof. Background technique [0002] With the development of science and technology, electronic devices and optoelectronic devices are moving towards the road of miniaturization, integration and intelligence, especially the rapid development of micro-electromechanical systems (MEMS), the traditional ferroelectric block cannot meet the requirements of micro-electromechanical systems due to size limitations. The requirements of electronic devices make the research of ferroelectric materials develop from bulk materials to film materials. The ferroelectric thick film is less affected by the interface and surface than the thin film due to its piezoelectric properties, and the thickness reaches the micron level, so that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/495C04B35/622C04B35/624C09K11/77
CPCC04B35/495C04B35/62218C04B35/624C09K11/7766C04B2235/3201C04B2235/3224C04B2235/6025C04B2235/6562C04B2235/6567C04B2235/9646
Inventor 吴啸卢瑶佳鲁齐铃林枞高旻赵纯林
Owner FUZHOU UNIV
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