新兴的2D材料和范德瓦尔斯异构结构用于先进的NIR,SWIR和MWIR发射器
Po-Liang Chen1, Tanveer Ahmed2, Ching Kuo1
1Institute of Photonics Technologies, National Tsing Hua University, Hsinchu, 30013, Taiwan.
Small methods
|December 13, 2024
概括
二维 (2D) 材料为红外 (IR) 发射器提供了灵活的替代方案,使新型设备设计成为可能. 本综述探讨了近红外 (NIR),短波红外 (SWIR) 和中波红外 (MWIR) 发光二极管 (LED) 的二维材料进步.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 纳米技术纳米技术
背景情况:
- 对于红外 (IR) 发射器的传统III-V和II-VI半导体,由于表轴生长要求,设备的复杂性和可集成性面临挑战.
- 二维 (2D) 材料为红外发射器提供了一个多功能平台,提供可调节的带隙和范德瓦尔斯 (vdW) 异构能力.
研究的目的:
- 审查近期基于二维材料的红外发射器的进展,包括近红外 (NIR),短波红外 (SWIR) 和中波红外 (MWIR) 频谱区域.
- 讨论二维材料的光发光特性和开发红外发光二极管 (LED) 的VDW工程策略.
主要方法:
- 探索二维材料光发光和VDW异构结构工程.
- 对可调节发射的外部刺激 (电场,应变) 的分析.
- 研究与光子结构 (腔,波导) 的集成.
主要成果:
- 2D材料使灵活的红外发射器设计具有多种光学带间隙.
- vdW工程为红外LED提供了复杂异构结构的创建.
- 可调节的发射波长可以通过外部刺激和与光子设备的集成来实现.
结论:
- 基于2D的红外发射器显示出改变红外光源的巨大潜力.
- 对挑战和前景的进一步研究对于实现先进的2DIR技术至关重要.
- 这些材料为简化,高度集成的红外发射器解决方案提供了一条途径.
相关概念视频
01:12Two-Dimensional (2D) NMR: Overview
The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse.
01:25IR Spectrometers
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...