SiEuAlON Fluorescent Material Light Emission Intensity
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Solution Overview
Problem
Conventional fluorescent materials used in light emitting devices have limited light emission intensity, which hinders their performance in achieving high output requirements.
Innovation Solution
A fluorescent material with the composition SiuEuvAlwOxNy, where u, v, w, x, and y are within specific ranges, is developed, incorporating a crystal structure similar to Si2.24Al10.76O0.76N13.24, and produced through a heat treatment process using EuF3 and other raw materials, enhancing light emission intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional fluorescent materials are used, then the device structure is simple and manufacturing is easy, but the light emission intensity is limited and cannot meet high output requirements
Solution Approach 1:
The patent applies parameter changes by precisely controlling the compositional parameters u, v, w, x, and y in the fluorescent material formula SiuEuvAlwOxNy. Specific ranges are defined for each parameter to optimize light emission intensity while maintaining manufacturing feasibility. This systematic parameter optimization resolves the contradiction by achieving high output through controlled material composition rather than complex device structures.
Solution Approach 2:
The patent employs composite materials by creating a fluorescent material with a specific composite composition SiuEuvAlwOxNy that combines multiple elements (Si, Eu, Al, O, N) in optimized proportions. This composite approach enables high light emission intensity by leveraging the synergistic effects of different elements, resolving the contradiction between performance and complexity through material composition rather than structural complexity.
2Use of energy by moving object
If the fluorescent material composition is optimized for high light emission intensity, then the light absorption and wavelength conversion efficiency improve, but the manufacturing precision requirements increase
Solution Approach 1:
The patent defines specific parameter ranges for u, v, w, x, and y in the fluorescent material composition to optimize light absorption efficiency. By establishing these controlled ranges rather than requiring exact values, the patent balances manufacturing precision requirements with performance optimization, allowing for practical manufacturing while achieving high light absorption and wavelength conversion efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The new fluorescent material exhibits high light emission intensity, efficient light absorption, and wavelength conversion, leading to improved light emitting device performance with enhanced color reproducibility and rendering properties.
Implementation Method 1
Fluorescent materials are used for light emitting devices that emit light, such as a white color, a bulb color, and an orange color, through a combination with a light emitting diode (LED). These fluorescent materials are excited by, for example, a blue light emitted from a light emitting element, thereby emitting a luminescent color
Data Source
AI summary
Provided are a fluorescent material having a high light emission intensity, a method for producing the same, and a light emitting device using the same. The present fluorescent material includes a composition represented by formula (I): SiuEuvAlwOxNy, wherein when the sum of a parameter u and a parameter w is taken as 13, parameters u, v, w, x, and y in the formula (I) satisfy the following formulae (1) to (5).2.77≤u≤2.88 (1)0.04≤v≤0.08 (2)10.12≤w≤10.23 (3)0.42≤x≤0.95 (4)12.89≤y≤13.65 (5)