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Overview Of Cell Separation And Isolation01:20

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Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.
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关于不同隔离技术对蓝色微型LED阵列应用的性能进行研究.

Shao-Hua Lin1, Yu-Yun Lo2, Yu-Hsuan Hsu2

  • 1Institute of Electrics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan, ROC.

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概括

这项研究优化了使用植入用于电气隔离的蓝色微型发光二极管 (LED). 更深的植入增强了光输出功率和外部量子效率,但效率下降略有增加.

关键词:
电气隔离器 电气隔离器离子植入技术技术 离子植入技术这是一个微型LED.像素大小 像素大小

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科学领域:

  • 固态物理 固态物理
  • 材料科学 材料科学 材料科学
  • 光电学是指光电子产品.

背景情况:

  • 微型发光二极管 (LED) 对于先进的显示和照明技术至关重要.
  • 高效的电气隔离对于高性能微型LED阵列至关重要.
  • 对于小规模的设备制造来说,传统的梅萨蚀刻可能是有问题的.

研究的目的:

  • 研究多能离子植入的效果,作为蓝色微型LED电气隔离的替代品.
  • 分析不同离子植入深度和配置对微型LED电气和光学性能的影响.
  • 为了优化制造过程,提高光输出功率和外部量子效率.

主要方法:

  • 使用金属有机化学蒸气沉积 (MOCVD) 在蓝宝石基板上制造3×3蓝色微LED阵列 (10×10 μm2像素大小,15 μm距离).
  • 利用光刻法,蚀刻,E射线蒸发和多能离子植入用于设备制造和隔离.
  • 系统地改变了植入深度和能量,以创建不同的深度配置文件.

主要成果:

  • 植入有效地取代了电气隔离的梅萨蚀刻,植入深度与平均能量相关.
  • 植入深度的增加导致了更高的光输出功率和峰值外部量子效率,从5.33%提高到9.82%.
  • 更深入的植入也导致效率下降的轻微增加 (从46.3%降至48.6%) 和n-GaN层的潜在损伤,增加了系列电阻.

结论:

  • 多能离子植入是蓝色微型LED制造中电气隔离的可行方法,提供更高的效率.
  • 需要仔细控制植入深度和能量,以平衡效率的增长与潜在的缺点,如增加串联电阻和垂落.
  • 进一步的研究可以集中在减轻n-GaN损害和减少效率下降,以获得更好的微型LED性能.