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Manganese titanium co-doped nitrogen germanate light-emitting film and preparation method thereof and electroluminescent device

A technology of luminescent film and germanate nitrogen, which is applied to the luminescent film of manganese-titanium co-doped germanate nitrogen and its preparation, in the field of electroluminescent devices

Inactive Publication Date: 2014-12-03
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not been reported that this type of material is made into a luminescent film.

Method used

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  • Manganese titanium co-doped nitrogen germanate light-emitting film and preparation method thereof and electroluminescent device
  • Manganese titanium co-doped nitrogen germanate light-emitting film and preparation method thereof and electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Choose MgO, GeO 2 , Ge 3 N 4 , MnO 2 and TiO 2The powder, whose molar ratio is 0.96:0.5:0.5:0.03:0.01, is uniformly mixed and sintered at 1200°C to form a Φ50×2mm ceramic target, and the target is loaded into a vacuum chamber. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, treated with oxygen plasma, and placed in a vacuum chamber. The distance between the target and the substrate was set to 70mm. Use a mechanical pump and a molecular pump to evacuate the cavity to 6.0×10 -4 Pa, hydrogen and argon are used as the working gas, the gas flow rate is 20 sccm, the pressure is 1.0 Pa, and the hydrogen content is 5%. The substrate temperature was 500°C. The obtained samples were annealed in a 0.01 Pa vacuum furnace for 2 h at a temperature of 600 °C. get Mg 0.96 Ge 2 o 2 N 2 :0.03Mn 4+ ,0.01Ti 4+ Glowing film.

Embodiment 2

[0030] Choose MgO, GeO 2 , Ge 3 N 4 , MnO 2 and TiO 2 The powder, whose molar ratio is 0.985:0.5:0.5:0.01:0.005, is uniformly mixed and sintered at 1200°C to form a Φ50×2mm ceramic target, and the target is loaded into a vacuum chamber. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, treated with oxygen plasma, and placed in a vacuum chamber. The distance between the target and the substrate was set to 70mm. Use a mechanical pump and a molecular pump to evacuate the cavity to 6.0×10 -4 Pa, hydrogen and argon are used as the working gas, the gas flow rate is 25 sccm, the pressure is 1.0 Pa, and the hydrogen content is 3%. The substrate temperature was 550°C. The obtained samples were annealed in a 0.01 Pa vacuum furnace for 2 h at a temperature of 650 °C. get Mg 0.985 Ge 2 o 2 N 2 :0.01Mn 4+ ,0.005Ti 4+ Glowing film.

Embodiment 3

[0032] Choose MgO, GeO 2 , Ge 3 N 4 , MnO 2 and TiO 2 , the molar ratio of which is 0.92:0.5:0.5:0.05:0.03, after uniform mixing, sintering at 1200°C to form a Φ50×2mm ceramic target, and put the target into a vacuum chamber. Then, the glass substrate with ITO was ultrasonically cleaned with acetone, absolute ethanol and deionized water successively, treated with oxygen plasma, and placed in a vacuum chamber. The distance between the target and the substrate was set to 70mm. Use a mechanical pump and a molecular pump to evacuate the cavity to 6.0×10 -4 Pa, hydrogen and argon are used as the working gas, the gas flow rate is 23 sccm, the pressure is 2.0 Pa, and the hydrogen content is 1%. The substrate temperature was 400°C. The obtained samples were annealed in a 0.01 Pa vacuum furnace for 2 h at an annealing temperature of 500 °C. get Mg 0.92 Ge 2 o 2 N 2 :0.05Mn 4+ ,0.03Ti 4+ Glowing film.

[0033] figure 1 For the EL spectrogram of the luminescent film sampl...

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Abstract

The invention belongs to the field of photoelectric materials, and discloses a manganese titanium co-doped nitrogen germanate light-emitting film and a preparation method thereof and an electroluminescent device; the light-emitting film has a chemical formula of Me1-x-yGe2O2N2:xMn<4 +>, yTi<4 +>; wherein Me1-x-yGe2O2N2 is a matrix, Mn<4 +> and Ti<4 +> are respectively activated light ions and sensitized ions, the Mn<4 +> is light-emitting centers of the light-emitting film, Me is selected from the group consisting of Mg, Ca, Sr or Ba element, the value range of x is 0.01-0.05, and the value range of y is 0.005-0.03. In the electroluminescence spectrum (EL) of the manganese titanium co-doped nitrogen germanate light-emitting film, strong light-emitting peaks show at 646 nm position.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to a luminescent thin film of manganese-titanium co-doped germanate nitrogen and a preparation method thereof. The invention also relates to an electroluminescent device using the luminescent thin film as a luminescent layer. Background technique [0002] Compared with the display screen made of traditional luminescent powder, the luminescent film shows strong advantages in terms of contrast, resolution, heat conduction, uniformity, adhesion to the substrate, and outgassing rate. Therefore, as functional materials, luminescent thin films have broad application prospects in flat panel display fields such as cathode ray tubes (CRTs), electroluminescence displays (ELDs) and field emission displays (FEDs). [0003] Thin film electroluminescent display (TFELD) has attracted widespread attention and developed rapidly due to its advantages such as active light emission, full solid s...

Claims

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Application Information

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IPC IPC(8): C09K11/66C23C14/35H05B33/14
Inventor 周明杰陈吉星王平张娟娟
Owner OCEANS KING LIGHTING SCI&TECH CO LTD