来自碳纳米管FET的电诱导光学辐射
J A Misewich1, R Martel, Ph Avouris
1IBM Research Division, IBM Thomas J. Watson Research Center, Yorktown Heights, NY 10598-0218, USA.
概括
研究人员观察到碳纳米管场效应晶体管 (FET) 的偏振红外光辐射. 这种新的设备使用电偏差来创建一个节点,用于高效的电子孔重组,为微小的光子设备铺平了道路.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学是一种材料科学.
- 纳米技术纳米技术
背景情况:
- 碳纳米管场效应晶体管 (FET) 具有独特的电子特性.
- 研究纳米设备的光学辐射对于集成光子学至关重要.
- 了解未使用过纳米管的电荷载体行为是设备应用的关键.
研究的目的:
- 为了研究碳纳米管双极FET的偏振红外光学辐射.
- 展示一种创新的方法,在没有化学兴奋剂的情况下在纳米管中创建光学活跃的连接.
- 探索这个系统作为超小型集成光子装置的潜力.
主要方法:
- 碳纳米管双极FET的制造和电气特性.
- 在特定的电偏差条件下测量极化红外光学辐射.
- 基于设备物理和电气数据的排放机制的分析.
主要成果:
- 从碳纳米管FET.观察到极化红外光学辐射.
- 通过电气偏差,在没有化学补充剂的情况下,证明了有效的前向偏向p-n连接的创建.
- 将光学辐射归因于同时注入的电子和纳米管中的孔的辐射再组合.
- 用一个模型验证了观察结果,该模型涉及接触处的Schottky障碍物.
结论:
- 碳纳米管FET可以作为新的光学重组辐射源.
- 展示的设备架构允许将电子和孔注入到一个几乎没有电场的区域.
- 这项技术对开发超小型集成光子设备具有前景.
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