用于平带增强的升级转换和接口损失恢复的内微电子
Yuxiang Zhang1,2, Gianluigi Zito3, Yuyang Gu1
1Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.
Nano letters
|March 2, 2026
概括
研究人员开发了一个反向指数向上转换的纳米粒子-元表面. 这一突破增强了光探测器的红外响应,使通信和成像领域的新应用成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 光子学是指光子学的使用方法.
背景情况:
- (Si) 光探测器的红外 (IR) 响应能力有限,阻碍了通信,化学传感和生物医学成像方面的应用.
- 用兰化物添加的升级转换纳米粒子 (UCNPs) 可以扩展Si光谱响应,但弱IR吸收和界面损失阻碍了单体集成.
研究的目的:
- 通过使用UCNP来提高红外响应,克服Si光探测器的局限性.
- 为UCNP-Si设备开发一个无蚀刻的单立体集成平台.
主要方法:
- 使用低指数NaYF4:Yb/Er纳米筒涂上高指数无形,制造一个反转指数UCNP-Si元表面.
- 使用集体Mie平带共振在976nm以提高光子吸收和度.
- 实施近场中介性被动化,以减少界面损失通道.
主要成果:
- 在976nm时实现了近单位的吸收,数值孔径宽 (NA ≈0.5).
- 通过共振场增强和损失恢复,在上转换信号中实现了创纪录的6800倍增长.
- 开发了一个完全无蚀刻的平台,兼容补充金属氧化物半导体 (CMOS) 处理.
结论:
- 该UCNP-Si超表面显著提高了的上转换效率.
- 该平台为先进的光探测器和紧型光源提供了可扩展的解决方案.
- 无蚀刻集成方法与现有的半导体制造工艺兼容.
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