检索结果-南通市图书馆

Chip-integrated van der Waals PN heterojunction photodetector with low dark current and high responsivity

Light(Science & Applications) 2022年第5期11卷 901-910页

作者： Ruijuan Tian Xuetao Gan Chen Li Xiaoqing Chen Siqi Hu Linpeng Gu dries van thourhout Andres Castellanos-Gomez Zhipei Sun Jianlin Zhao Key Laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical University710129 Xi’anChina Photonics Research Group and Center for Nano and Biophotonics Ghent UniversityB-9000 GentBelgium Materials Science Factory Instituto de Ciencia de Materiales de Madrid(ICMM-CSIC)E-28049 MadridSpain Department of Electronics and Nanoengineering and QTF Centre of Excellence Aalto UniversityFI-02150 EspooFinland

Two-dimensional materials are attractive for constructing high-performance photonic chip-integrated photodetectors because of their remarkable electronic and optical properties and dangling-bond-free ***,the reported chip-integrated two-dimensional material photodetectors were mainly implemented with the configuration of metalsemiconductor-metal,suffering from high dark currents and low responsivities at high operation ***,we report a van der Waals PN heterojunction photodetector,composed of p-type black phosphorous and n-type molybdenum telluride,integrated on a silicon nitride *** built-in electric field of the PN heterojunction significantly suppresses the dark current and improves the *** a bias of 1 V pointing from n-type molybdenum telluride to p-type black phosphorous,the dark current is lower than 7 nA,which is more than two orders of magnitude lower than those reported in other waveguide-integrated black phosphorus *** intrinsic responsivity up to 577 mA W^(−1) is ***,the van der Waals PN heterojunction is tunable by the electrostatic doping to further engineer its rectification and improve the photodetection,enabling an increased responsivity of 709 mA W^(−1).Besides,the heterojunction photodetector exhibits a response bandwidth of~1.0 GHz and a uniform photodetection over a wide spectral range,as experimentally measured from 1500 to 1630 *** demonstrated chip-integrated van der Waals PN heterojunction photodetector with low dark current,high responsivity and fast response has great potentials to develop high-performance on-chip photodetectors for various photonic integrated circuits based on silicon,lithium niobate,polymer,etc.

关键词： heterojunction responsivity waveguide

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Localization-limited exciton oscillator strength in colloidal CdSe nanoplatelets revealed by the optically induced stark effect

引用

Light(Science & Applications) 2021年第6期10卷 1122-1132页

作者： Pieter Geiregat Carmelita Roda Ivo Tanghe Shalini Singh Alessio Di Giacomo Delphine Lebrun Gianluca Grimaldi Jorick Maes dries van thourhout Iwan Moreels Arjan J.Houtepen Zeger Hens Physics and Chemistry of Nanostructures Department of ChemistryGhent UniversityGentBelgium. Center for Nano and Biophotonics Ghent UniversityGentBelgium. Photonics Research Group Ghent UniversityGentBelgium. Department of Chemical Sciences and Bernal Institute University of LimerickLimerickIreland. Center for Nanophotonics NWO-lnstitute AMOLFScience Park 1041098 XG AmsterdamThe Netherlands. Opto-Electronic Materials Section Department of Chemical EngineeringDelft UniversityDelftThe Netherlands

2D materials are considered for applications that require strong light-matter interaction because of the apparently giant oscillator strength of the exciton transitions in the absorbance ***,the effective oscillator strengths of these transitions have bee n scarcely reported,nor is there a con sistent interpretati on of the obtained ***,we analyse the transition dipole moment and the ensuing oscillator strength of the exciton transition in 2D CdSe nanoplatelets by means of the optically induced Stark effect(OSE).Intriguingly,we find that the exciton absorption line reacts to a high intensity optical field as a transition with an oscillator strength FStark that is 50 times smaller than expected based on the linear absorption *** propose that the pronounced exciton absorption line should be seen as the sum of multiple,low oscillator strength transitions,rather than a single high oscillator strength one,a feat we assign to strong exciton center-of-mass *** the quantum mechanical description of excitons,this 50-fold difference between both oscillator strengths corresponds to the ratio between the cohere nee area of the exciton's center of mass and the total area,which yields a coherence area of a mere 6.1 *** we find that the coherence area in creases with reducing temperature,we conclude that thermal effects,related to lattice vibrations,contribute to exciton *** further support of this localization model,we show that FStark is in dependent of the n anoplatelet area,correctly predicts the radiative lifetime,and lines up for strongly confined quantum dot systems.

关键词： coefficient. spectrum. oscillator

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Taking silicon photonics modulators to a higher performance level: state-of-the-art and a review of new technologies

引用

Advanced Photonics 2021年第2期3卷 38-60页

作者： Abdul Rahim Artur Hermans Benjamin Wohlfeil Despoina Petousi Bart Kuyken dries van thourhout Roel Baets Ghent University Photonics Research GroupDepartment of Information TechnologyGhentBelgium Ghent University IMEC and Center for Nano-and BiophotonicsGhentBelgium ADVA Optical Networking BerlinGermany

Optical links are moving to higher and higher transmission speeds while shrinking to shorter and shorter ranges where optical links are envisaged even at the chip *** scaling in data speed and span of the optical links demands modulators to be concurrently performant and *** photonics(SiPh),a photonic integrated circuit technology that leverages the fabrication sophistication of complementary metal-oxide-semiconductor technology,is well-positioned to deliver the performance,price,and manufacturing volume for the high-speed modulators of future optical communication *** has relied on the plasma dispersion effect,either in injection,depletion,or accumulation mode,to demonstrate efficient high-speed *** high-speed plasma dispersion silicon modulators have been commercially deployed and have demonstrated excellent *** years have seen a paradigm shift where the integration of various electro-refractive and electro-absorptive materials has opened up additional routes toward performant SiPh *** modulators are in the early years of their *** promise to extend the performance beyond the limits set by the physical properties of *** focus of our study is to provide a comprehensive review of contemporary(i.e.,plasma dispersion modulators)and new modulator implementations that involve the integration of novel materials with SiPh.

关键词： high-speed modulators silicon photonics plasma dispersion effect ferroelectrics graphene III-V on Si organic(electro-optic)materials.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

三五族激光器的硅基单片集成

三五族激光器的硅基单片集成

引用

第十一届全国硅基光电子材料及器件研讨会

作者：王喆超 Joris van Campenhout dries van thourhout Gunther Roelkens Photonics Research Group Ghent University/IMEC Technologiepark-Zwijnaarde 15 9052 Gent Belgium imec 3001 Leuven Belgium

＜正＞经过十多年的发展,硅基光子学已经成为一个非常有吸引力的集成光学平台。通过利用成熟的300 mm CMOS pilot line,硅基光子集成芯片能够实现大规模的低成本制造[1]。同时,光子器件与电子器件的混合集成,能够极大的提高系统的集成...

＜正＞经过十多年的发展,硅基光子学已经成为一个非常有吸引力的集成光学平台。通过利用成熟的300 mm CMOS pilot line,硅基光子集成芯片能够实现大规模的低成本制造[1]。同时,光子器件与电子器件的混合集成,能够极大的提高系统的集成度和功能的多样性[2]。硅基光子学最近几年的发展重点是硅基有源器件的集成,虽然超高速的调制器和探测器已经被广泛实现,但由于硅材料本身特性的限制

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Silicon and silicon nitride photonic circuits for spectroscopic sensing on-a-chip [Invited]

引用

Photonics Research 2015年第5期3卷 47-59页

作者： Ananth Z.Subramanian Eva Ryckeboer Ashim Dhakal Frédéric Peyskens Aditya Malik Bart Kuyken Haolan Zhao Shibnath Pathak Alfonso Ruocco Andreas De Groote Pieter Wuytens Daan Martens Francois Leo Weiqiang Xie Utsav Deepak Dave Muhammad Muneeb Pol van Dorpe Joris van Campenhout Wim Bogaerts Peter Bienstman Nicolas Le Thomas dries van thourhout Zeger Hens Gunther Roelkens Roel Baets Photonics Research Group INTEC Department Ghent University-imec Centre for Nano and Biophotonics Ghent University University of California Department of Molecular Biotechnology Ghent University imec Kapeldreef 75 Physics and Chemistry of Nanostructures Ghent University

There is a rapidly growing demand to use silicon and silicon nitride（Si3N4） integrated photonics for sensing applications, ranging from refractive index to spectroscopic sensing. By making use of advanced CMOS technology,complex miniaturized circuits can be easily realized on a large scale and at a low cost covering visible to mid-IR wavelengths. In this paper we present our recent work on the development of silicon and Si3N4-based photonic integrated circuits for various spectroscopic sensing applications. We report our findings on waveguide-based absorption, and Raman and surface enhanced Raman spectroscopy. Finally we report on-chip spectrometers and on-chip broadband light sources covering very near-IR to mid-IR wavelengths to realize fully integrated spectroscopic systems on a chip.

关键词： Invited SOI mode

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Phylogenetic placement of lichenicolous Phoma species in the Phaeosphaeriaceae(Pleosporales,Dothideomycetes)

引用

Fungal Diversity 2012年第4期55卷 195-213页

作者： James D.Lawrey Paul Diederich Matthew P.Nelsen Colin Freebury dries van den Broeck Masoumeh Sikaroodi Damien Ertz Department of Environmental Science and Policy George Mason University4400 University DriveFairfaxVA 22030-4444USA Musée national d’histoire naturelle 25 rue MunsterL-2160 LuxembourgLuxembourg Committee on Evolutionary Biology University of Chicago1025 E.57th StreetChicagoIL 60637USA Department of Botany The Field Museum1400 S.Lake Shore DriveChicagoIL 60605USA Canadian Museum of Nature P.O.Box 3443Station DOttawaON K1P 6P4Canada Jardin Botanique National de Belgique Domaine de BouchoutB–1860 MeiseBelgium

More than twenty species of lichenicolous fungi have been described in Phoma,a large anamorphic genus of primarily plant-associated pathogens with broad geographic *** obtained nuclear and mitochondrial rDNA sequences from 19 fungal cultures isolated from specimens representing four described and two undescribed lichenicolous species in the *** multilocus phylogeny indicates that lichenicolous Phoma species represent at least two phylogenetically distinct clades in the Phaeosphaeriaceae,one including a new species,Phoma puncteliae,isolated from a specimen of Punctelia rudecta collected inMaryland,USA,and another group of primarily lichenicolous *** latter group includes four described lichenicolous Phoma species,an unidentified melanized rock fungus,and a new lichenicolous Phoma species isolated from Xanthomendoza species collected in Canada that we are naming *** specimens in this clade collected from different lichen genera and species were found to be very similar genetically,which calls into question the recent practice of recognizing lichenicolous Phoma species mainly by differences in host preference.

关键词： Anamorphic fungi Coelomycetes Conidial fungi Parasitic fungi

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

安特卫普：一座再创造和再度活跃的城市

引用

国际城市规划 2012年第3期27卷 36-41页

作者：热夫·范登布勒克德里·威廉斯邢晓春(译) 规划设计英国诺丁汉大学建成环境学院

安特卫普是比利时第二大城市,有着光辉的历史和可预期的未来。早在16世纪,它就是一座重要的城市、主要港口以及国际化的商业与文化中心,许多＂佛兰德画派＂的著名画家发现这是一个具有创意的空间和适合生活与创作的场所。

关键词：安特卫普大城市再创造文化中心比利时国际化场所空间

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

终末期心力衰竭患者的肌成纤维细胞表型和纤维化的可逆性

引用

中华高血压杂志(中英文) 2019年第10期 999-999页

作者： Nagaraju CK Robinson EL Abdesselem M Trenson S dries E Gilbert G Janssens S van Cleemput J Rega F Meyns B Roderick HL driesen RB Sipido KR 林立超余惠珍朱鹏立

心肌间质纤维化通过激活成纤维细胞分化为肌成纤维细胞(myofibroblasts, MyoFb)导致舒张及收缩功能不全,为心力衰竭的重要病理基础。近期临床证据表明,在终末期心力衰竭患者中,心肌间质纤维化是不可逆转的病理过程。本文研究目的为探讨... 详细信息

心肌间质纤维化通过激活成纤维细胞分化为肌成纤维细胞(myofibroblasts, MyoFb)导致舒张及收缩功能不全,为心力衰竭的重要病理基础。近期临床证据表明,在终末期心力衰竭患者中,心肌间质纤维化是不可逆转的病理过程。本文研究目的为探讨终末期心力衰竭患者的心肌组织中MyoFb的分化程度和细胞表型逆转的潜在性。方法:两种来源获取成纤维细胞:①从因缺血性或扩张性心肌病需心脏移植患者的左心室分离;②从捐献者的心脏中分离。成纤维细胞经体

关键词：终末期心力衰竭肌成纤维细胞纤维化可逆性

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

从现实主义到现实:荷兰建筑的未来

引用

世界建筑 2005年第7期 21-27页

作者：皮尔·维托里奥·奥雷利勒默尔·范·托恩乔基姆·德克莱克德里斯·范德·费尔德李路珂(译) 朱亦民(校) 贝尔拉格学院设计单元主管贝尔拉格学院理论与历史项目主管贝尔拉格学院学生

导言建筑潮流很少在指定的某一天死去,然而在荷兰建筑近些年的成功故事中,似乎确实存在着这样的转折点。

关键词：建筑皮尔建筑师美术家荷兰住宅库哈斯晚期资本主义东西实用主义数据研究意识形态建筑学现实主义

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：