透明双极半导体的化学设计和示例
Takeshi Arai1, Soshi Iimura1, Junghwan Kim2
1Laboratory for Materials and Structures, Tokyo Institute of Technology , Yokohama 226-8503, Japan.
Journal of the American Chemical Society
|November 9, 2017
概括
研究人员使用早期过渡金属开发了透明双极半导体 (TBSC) 的新设计概念. 这一突破为下一代透明电子产品的宽带间隙材料提供了更好的载体控制.
科学领域:
- 材料科学
- 固态物理
- 光电子产品
背景情况:
- 透明双极半导体 (TBSC) 对于先进的透明电子非常重要.
- 由于载体控制能力差,在宽带间隙材料中实现双极性是具有挑战性的.
- 目前,只有CuInO2和SnO是已知的TBSC.
研究的目的:
- 为透明双极半导体 (TBSC) 提出一个新的设计概念.
- 克服宽带间隙材料的载波可控性和透明性的局限性.
- 为下一代光电子设备确定新的TBSC材料.
主要方法:
- 提出了一项涉及早期过渡金属 (eTM) 的设计策略,以加强载体兴奋剂控制.
- 专注于设计适合双极兴奋剂的最佳带结构的化学键.
- 使用禁止带边过渡来保持光学透明度.
- 根据提出的标准,研究了四角形ZrOS作为候选材料.
主要成果:
- 在ZrOS (10^-7到10^-2 S cm^-1) 中表现出极好的电导性可控性.
- 通过Y剂达到p型导电性,通过F剂达到n型导电性 (约为10^-2 S cm^-1).
- 证实了ZrOS的光学宽带间隙 (低于10^-4cm^-1至~2.5 eV).
结论:
- 提出的设计概念成功地产生了基于eTM离子化合物的新类TBSC.
- 四角形ZrOS作为一个实用的例子来验证设计原则.
- 这项工作为开发先进的透明电子和光电子设备铺平了道路.
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