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Types of Semiconductors01:20

Types of Semiconductors

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Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
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相关实验视频

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Preparation of Macroporous Epitaxial Quartz Films on Silicon by Chemical Solution Deposition
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解决方案处理的薄膜和晶体管.

Tatsuya Shimoda1, Yasuo Matsuki, Masahiro Furusawa

  • 1Technology Platform Research Centre, Seiko Epson Corporation, 281 Fujimi, Fujimi-machi, Nagano-ken, 399-0293 Japan.

Nature
|April 7, 2006
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概括

研究人员开发了一种使用液体前体的薄膜晶体管 (TFT) 的新解决方案工艺. 这种方法可以打印高性能多晶TFT,为传统的制造提供了具有成本效益的替代方案.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电子工程 电子工程
  • 半导体物理 半导体物理

背景情况:

  • 解决方案处理为制造电子设备提供了基于真空的方法的经济有效的替代方案.
  • 目前的研究重点是用于可打印电子产品的有机和金属化物半导体,在可靠性和性能方面面临挑战.
  • 基于的电子产品由于其高性能而主导了该行业,但传统制造复杂且昂贵.

研究的目的:

  • 为了证明高质量的膜的溶液加工的可行性.
  • 开发一种基于西兰的液体前体,用于溶液处理的薄膜晶体管 (TFT).
  • 在溶液加工的TFT中实现高电荷载体流动性,与现有技术相比或超过现有技术.

主要方法:

  • 开发一种基于西兰的新型液体前体,用于沉积.
  • 使用旋转涂层和喷墨印刷技术制造多晶 (poly-Si) 薄膜.
  • 由此产生的薄膜晶体管 (TFT) 的特性,以确定其电性能.

主要成果:

  • 通过使用开发的前体进行溶液加工,成功制备聚晶薄膜.
  • 制造具有108厘米2V{-1}s{-1} (旋转涂层) 和6.5厘米2V{-1}s{-1} (喷墨打印) 的可移动性的TFT.
  • 实现的移动性超过当前溶液加工有机TFT和无形TFT的移动性.

结论:

  • 的溶液加工是制造高性能TFT的可行方法.
  • 开发的基于西兰的前体使得成本高效,大面积的电子产品生产成为可能.
  • 这一突破可能会对柔性显示器和其他电子应用的制造产生重大影响.