Xie Yadian, Xue Miaoxuan, Gao Lanxing, Hou Yanqing, Yang Bo, Tong Xin
Guizhou Provincial Key Laboratory in High Education Institutions of Low-Dimensional Materials and Environmental and Ecological Governance, Key Laboratory of Low-Dimensional Materials and Big Data, College of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China.
Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
Materials (Basel). 2023 Aug 30;16(17):5938. doi: 10.3390/ma16175938.
The sapphire crystal, the most commonly used LED substrate material, has excellent optical and chemical properties and has rapidly developed in recent years. However, the challenge of growing large-size sapphire crystals remains. This paper presents a novel approach using alumina nanoparticles synthesized with abietic acid as a template to enhance sapphire growth via the heat exchange method. This study explores the effects of temperature, time, and template amount on the structure and morphology of the synthesized alumina nanoparticles. The results show that the morphology of the raw material, particularly spherical alumina nanoparticles, positively affects the quality and yield stability of sapphire products. Furthermore, the light output power of GaN-based LED chips made with the experimentally fabricated sapphire substrate increased from 3.47 W/µm to 3.71 W/µm, a 6.9% increase compared to commercially available sapphire substrates. This research highlights the potential of using abietic acid as a template for alumina nanoparticle synthesis and their application in sapphire growth for LED production.
蓝宝石晶体是最常用的LED衬底材料，具有优异的光学和化学性能，近年来发展迅速。然而，生长大尺寸蓝宝石晶体仍然面临挑战。本文提出了一种新方法，以松香酸为模板合成氧化铝纳米颗粒，通过热交换法促进蓝宝石生长。本研究探讨了温度、时间和模板用量对合成氧化铝纳米颗粒结构和形态的影响。结果表明，原料的形态，特别是球形氧化铝纳米颗粒，对蓝宝石产品的质量和产量稳定性有积极影响。此外，用实验制备的蓝宝石衬底制成的GaN基LED芯片的光输出功率从3.47 W/µm提高到3.71 W/µm，与市售蓝宝石衬底相比增加了6.9%。本研究突出了使用松香酸作为氧化铝纳米颗粒合成模板及其在LED生产蓝宝石生长中的应用潜力。
