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高效和热稳定的辐射ZnS/ZnO光体,用于全可见光谱LED照明

Do Quang Trung¹, Manh Trung Tran², Nguyen Van Du¹

¹Faculty of Fundamental Sciences, Phenikaa University Yen Nghia, Ha-Dong District Hanoi 10000 Vietnam trung.doquang@phenikaa-uni.edu.vn.

|January 8, 2025

概括

研究人员为近紫外线 (NUV) 白色发光二极管 (WLED) 开发了高效的辐射ZnS/ZnO光. 这些无毒的光剂为固态照明应用提供了更好的色彩染和热稳定性.

科学领域:

材料科学材料科学材料科学
固态照明固态照明
光子材料的光子材料

背景情况:

接近紫外线 (NUV) 的白色发光二极管 (WLED) 往往呈现出差的色彩染,特别是在蓝色光谱 (480-520 nm).
对于在370-420nm范围内具有强度吸收的高效光的需求至关重要,以提高WLED的性能.
稀土虽然有效,但存在毒性和成本问题,需要开发替代材料.

研究的目的:

为了合成和描述新型的辐射ZnS/ZnO,用于NUV送的WLED.
评估合成的光学和热性质.
证明ZnS/ZnO作为稀土的无毒,高效替代品的潜力.

主要方法:

合成ZnS/ZnO光剂使用高能行星球磨,然后进行后.
颗粒大小 (1-3μm) 的表征.
制造一个原型的NUV-pumped色LED通过涂层一个NUV芯片 (370nm) 的合成.

主要成果:

合成的ZnS/ZnO光体表现出强烈的辐射,CIE色系坐标为 (0.2302,0.3759).
体表现出极好的热稳定性,激活能量为0.26 eV.
原型的NUV入的色LED实现了颜色坐标为 (0.2769,0.4380) 和77%的量子效率.

结论:

基于ZnS/ZnO的材料有望成为稀土的高效和无毒替代品.
开发的光剂显著改善了NUV-WLEDs在色范围内的色彩染.
这些发现为下一代固态照明的全光谱白色LED的发展铺平了道路.

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