CAREER: Multispectral broadband photodetectors based on multi-material films with intercalated graphene monolayers as charge collectors

职业：基于多材料薄膜的多光谱宽带光电探测器，以插层石墨烯单层作为电荷收集器

基本信息

批准号：
2046176
负责人：
Oscar Vazquez-Mena
金额：
$ 50万
依托单位：
University of California-San Diego
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-07-01 至 2026-06-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2046176&HistoricalAwards=false
关键词：
CAREER Multispectral broadband photodetectors based

项目摘要

The information encoded in light is critical for us to detect and respond to events happening in our surroundings. The capability of our eyes to distinguish different wavelengths in the visible range, what we see as different colors, enables us to understand our environment. There is also plenty of information encoded in light in the infrared and in the ultraviolet ranges that cannot be detected by our eyes. For example, many dangerous gases, biomolecules, and air and water contaminants have a light signature in the infrared that cannot be detected by the human eye. The goal of this NSF CAREER project is to create a new generation of compact multispectral photodetectors that can be integrated into portable and personal devices enabling light analysis in the infrared and ultraviolet. This would allow people to use the vast IR and UV information from our environment to detect and respond to phenomena surrounding us. Integrating multispectral photodetectors in mobile phones would enable applications such as checking for food quality or contamination, monitoring air and water quality, and facility disease detection in the skin or bodily fluids. On the educational aspect, this project aims to develop hands-on educational training modules on fabrication of nanoscale devices, facilitating active student learning in nanotechnology training and boosting the training of the next generation of nanoengineers. Developing more hands-on experimental modules with nanomaterials will facilitate active student learning and provide them with experimental/technical skills sought by industry that cannot be achieved in classrooms. Hands-on modules on nanomaterials without sophisticated equipment will also allow the development of more engaging and active outreach activities for precollege students, especially for underrepresented students at schools that may have limited resources and laboratory equipment. Multispectral photodetection from the ultraviolet (UV) to the mid-wave infrared (MWIR) is important for many applications like food quality inspection, health monitoring, autonomous vehicles navigation and remote sensing. However, current technologies require expensive epitaxial materials for photodetection, especially in the MWIR, and complex optical components for spectral analysis that prevent the large-scale deployment of multispectral photodetectors for personal devices This project aims to create a new generation of thin-film-based multispectral photodetectors with low-cost materials that can be integrated into personal devices for multispectral detection and imaging through the UV-Vis-MWIR spectrum. The principle of operation is that by using intercalated graphene monolayers at different depths and integrating materials with different bandgaps, it is possible to achieve broadband photodetection with multispectral analysis capability. This project aims to use CVD graphene monolayers as intercalated photocarrier collectors at different depths in light-absorbing materials for simultaneous detection of multiple spectral bands. This project also aims to integrate multiple materials with various bandgaps to cover a large spectral range. The use of intercalated graphene will allow efficient charge extraction from low-cost processing materials. The project will create a new generation of compact multispectral photodetector that can be integrated on a chip without complex optical components. This technology could benefit fields such as biosensing, biomedical imaging and remote sensing, as well as enable the integration of multispectral detectors reaching the UV and IR spectrum into mobile phones or portable devices.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

对我们发现并响应周围环境中发生的事件至关重要的信息至关重要。眼睛区分可见范围内不同波长的能力，我们认为是不同的颜色，使我们能够理解我们的环境。在红外线和紫外线范围内，也有很多信息在我们眼中无法检测到的紫外线范围。例如，许多危险的气体，生物分子以及空气和水污染物在红外线中具有光签名，而人眼无法检测到。这个NSF职业项目的目标是创建新一代紧凑的多光谱光电探测器，可以将其集成到便携式和个人设备中，从而在红外和紫外线中启用光线分析。这将使人们使用我们环境中的庞大的IR和紫外线信息来检测和响应周围的现象。在手机中整合多光谱光电探测器将使应用程序检查食物质量或污染，监测空气和水质以及皮肤或体液中的设施疾病检测。在教育方面，该项目旨在开发有关制造纳米级设备的动手教育培训模块，从而促进纳米技术培训中的积极学生学习，并增强对下一代纳米发动机的培训。使用纳米材料开发更多的动手实验模块将有助于积极的学生学习，并为他们提供行业所寻求的实验/技术技能，而这些实验/技术技能无法在课堂上实现。没有复杂设备的纳米材料上的动手模块也将允许为预科课程的学生开发更具吸引力和积极的外展活动，尤其是对于可能没有资源和实验室设备有限的学校的代表性不足的学生而言。从紫外线（UV）到中波红外线（MWIR）的多光谱光检测对于许多应用，例如食品质量检查，健康监测，自动驾驶汽车导航和遥感。但是，当前的技术需要昂贵的光电检测材料，尤其是在MWIR中，以及用于光谱分析的复杂光学组件，以防止针对个人设备大规模部署多光谱光电电极的大规模部署。该项目旨在通过将新一代薄膜的多态光电极材料组成的跨度材料来创建新一代，以使其成型材料可以整合成多种材料UV-VIS-MWIR光谱。操作的原理是，通过在不同深度下使用互化的石墨烯单层，并将材料与不同的带盖集成，可以使用多光谱分析能力实现宽带光电检测。该项目的目的是将CVD石墨烯单层用作在光吸收材料中不同深度的插入的光载体收集器，以同时检测多光谱带。该项目还旨在将多种材料与各种带盖集成，以覆盖较大的光谱范围。使用插入石墨烯将允许从低成本加工材料中提取有效的电荷提取。该项目将创建新一代紧凑的多光谱光电探测器，可以在没有复杂的光学组件的情况下集成在芯片上。这项技术可以使生物传感，生物医学成像和遥感等领域受益，并能够使多光谱探测器的整合到达移动电话或便携式设备中。该奖项反映了NSF的法规任务，并被认为是通过基金会的知识优点和广泛的criter criter critia criter criter criter criter criter criter criter criter criter scritia criter criter critia criter criter criter criter criter criter criteria criter criter criter criteria criter critia criteria criteria crite critia criter critia均值得一提。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Measuring Light Penetration for Spectral Analysis with Intercalated Graphene/Quantum Dot Photodetectors

DOI：
发表时间：
2023-06
期刊：
2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers)
影响因子：
0
作者：
Seungbae Ahn;Ju Ying Shang;O. Vázquez-Mena
通讯作者：
Seungbae Ahn;Ju Ying Shang;O. Vázquez-Mena

Measuring the carrier diffusion length in quantum dot films using graphene as photocarrier density probe

使用石墨烯作为光载流子密度探针测量量子点薄膜中的载流子扩散长度