High-selectivity NIR amorphous silicon-based plasmonic photodetector at room temperature

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2024-09-26 DOI:10.1016/j.sna.2024.115925

Eslam Abubakr , Giles Allison , Shiro Saito , Hironori Suzuki , Koki Hayashi , Tetsuo Kan

{"title":"High-selectivity NIR amorphous silicon-based plasmonic photodetector at room temperature","authors":"Eslam Abubakr , Giles Allison , Shiro Saito , Hironori Suzuki , Koki Hayashi , Tetsuo Kan","doi":"10.1016/j.sna.2024.115925","DOIUrl":null,"url":null,"abstract":"<div><div>This study employed amorphous materials to construct a Near-Infrared (NIR) photodetector, enabling optical sensing over a non-crystalline platform. Utilizing an Au/a-Si Schottky junction with an interfacial oxide layer, the device showcased its capability as a NIR photodetector, effectively operating within a wavelength range of up to 1700 nm. Remarkably, it exhibited significant surface plasmon resonance peaks with high selectivity, a full-width at half-maximum of less than 3°, and a sensitivity of −33.3 dBm, demonstrated at room temperature and zero-biasing conditions. Barrier lowering under biasing further increases the device's responsivity by an order of magnitude, revealing absorption capabilities that exceed the material's intrinsic bandgap limitations. This advancement opens the door to developing highly selective detectors using cost-effective amorphous materials and straightforward design. Additionally, a-Si-based photodetectors contribute to environmental preservation as they do not contain toxic heavy metals, establishing them as one of the most Eco-friendly detection solutions.</div></div>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4000,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0924424724009191","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

This study employed amorphous materials to construct a Near-Infrared (NIR) photodetector, enabling optical sensing over a non-crystalline platform. Utilizing an Au/a-Si Schottky junction with an interfacial oxide layer, the device showcased its capability as a NIR photodetector, effectively operating within a wavelength range of up to 1700 nm. Remarkably, it exhibited significant surface plasmon resonance peaks with high selectivity, a full-width at half-maximum of less than 3°, and a sensitivity of −33.3 dBm, demonstrated at room temperature and zero-biasing conditions. Barrier lowering under biasing further increases the device's responsivity by an order of magnitude, revealing absorption capabilities that exceed the material's intrinsic bandgap limitations. This advancement opens the door to developing highly selective detectors using cost-effective amorphous materials and straightforward design. Additionally, a-Si-based photodetectors contribute to environmental preservation as they do not contain toxic heavy metals, establishing them as one of the most Eco-friendly detection solutions.

查看原文本刊更多论文

室温下的高选择性近红外非晶硅质子光电探测器

这项研究利用非晶材料构建了一个近红外（NIR）光电探测器，从而在非晶平台上实现了光学传感。利用带有界面氧化层的金/硅肖特基结，该器件展示了其作为近红外光电探测器的能力，可在高达 1700 纳米的波长范围内有效工作。值得注意的是，该器件在室温和零偏压条件下表现出明显的表面等离子体共振峰，具有高选择性，半最大全宽小于 3°，灵敏度为 -33.3 dBm。偏压下的势垒降低进一步将器件的响应率提高了一个数量级，显示出超越材料固有带隙限制的吸收能力。这一进步为利用成本效益高的非晶材料和简单的设计开发高选择性探测器打开了大门。此外，基于非晶硅的光电探测器不含有毒重金属，是最环保的检测解决方案之一，有助于保护环境。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.