检索结果-内蒙古大学图书馆

Quantum efficiency and dark current evaluation of a backside illuminated CMOS image sensor

JAPANESE JOURNAL OF APPLIED PHYSICS 2015年第4期54卷 4DE09.1-4DE09.6页

作者： Vereecke, Bart Cavaco, Celso De Munck, Koen Haspeslagh, Luc Minoglou, Kyriaki Moore, George Sabuncuoglu, Deniz Tack, Klaas Wu, Bob Osman, Haris IMEC B-3001 Leuven Belgium Poongsan Corp CA Branch Sunnyvale CA 94085 USA

We report on the development and characterization of monolithic backside illuminated (BSI) imagers at imec. Different surface passivation, anti-reflective coatings (ARCs), and anneal conditions were implemented and their effect on dark current (DC) and quantum efficiency (QE) are analyzed. Two different single layer ARC materials were developed for visible light and near UV applications, respectively. QE above 75% over the entire visible spectrum range from 400 to 700nm is measured. In the spectral range from 260 to 400nm wavelength, QE values above 50% over the entire range are achieved. A new technique, high pressure hydrogen anneal at 20 atm, was applied on photodiodes and improvement in DC of 30% for the BSI imager with HfO2 as ARC as well as for the front side imager was observed. The entire BSI process was developed 200mm wafers and evaluated on test diode structures. The knowhow is then transferred to real imager sensors arrays. (C) 2015 The Japan Society of Applied Physics

关键词： imaging instrument COPPER ALLOY NO 260 annealed condition Visible Light CMOS image sensors spectral range direct current Surface passivation Photodiodes Quantum efficiency Dark current

来源：评论

学校读者我要写书评

暂无评论

Active sensor system for automatic rendezvous and docking

Active sensor system for automatic rendezvous and docking

引用

Laser Radar Technology and applications ii

作者： Howard, Richard T. Bryan, Thomas C. Book, Michael L. Jackson, John L. NASA Marshall Space Flight Cent. Huntsville AL USA

ISBN: (纸本)0819424803

NASA's Marshall Space Flight Center has developed an active sensor system, the ideo guidance sensor (VGS), to provide near-range relative position and attitude data. The VGS will be part of an automatic rendezvous and docking system. The VGS determines the relative positions and attitudes between the active sensor and the passive target. It works by using laser diodes to illuminate the retro-reflectors in the target, a solid-state camera to detect the return from the target retro-reflectors, and a frame grabber and digital signal processor to convert the video information into relative positions and attitudes. The current sensor design is the result of several years of development and testing, and it is being built to fly as an experiment payload on the space shuttle. The VGS system is designed to operate with the target completely visible within a relative azimuth of ± 10.5 degrees and a relative elevation of ± 8 degrees. The system will acquire and track and target within that field-of-view anywhere from 1.0 meters to 110 meters range at any relative roll angle and relative pitch and yaw attitudes of up to ± 10 degrees. The data is output from the sensor at 5 Hz, and the target and sensor software have been designed to permit two independent sensors to operate simultaneously for redundancy.

关键词： Optical sensors

来源：评论

学校读者我要写书评

暂无评论

Characterization of the column-based priority logic readout of Topmetal-ii^- CMOS pixel direct charge sensor

Characterization of the column-based priority logic readout ...

引用

Topical Workshop on Electronics for Particle Physics

作者： An, M. Zhang, W. Xiao, L. Gao, C. Chen, C. Han, M. Huang, G. Ji, R. Li, X. Liu, J. Mei, Y. Pei, H. Sun, Q. Sun, X. Wang, K. Yang, P. Zhou, W. Cent China Normal Univ Key Lab Quark & Lepton Phys MOE PLAC Wuhan 430079 Hubei Peoples R China Lawrence Berkeley Natl Lab Nucl Sci Div Berkeley CA 94720 USA Chinese Acad Sci Inst High Energy Phys Beijing 100049 Peoples R China Southern Methodist Univ Dept Phys Dallas TX 75205 USA

We present the detailed study of the digital readout of Topmetal-ii- CMOS pixel direct charge sensor. Topmetal-ii- is an integrated sensor with an array of 72 x 72 pixels each capable of directly collecting external charge through exposed metal electrodes in the topmost metal layer. In addition to the time-shared multiplexing readout of the analog output from Charge Sensitive Amplifiers in each pixel, hits are also generated through comparators in each pixel with individually adjustable thresholds. The hits are read out via a column-based priority logic structure, retaining both hit location and time information. The in-array column-based priority logic features with a full clock-less circuitry hence there is no continuously running clock distributed in the pixel and matrix logic. These characteristics enable its use as the charge readout device in future Time Projection Chambers without gaseous gain mechanism, which has unique advantages in low background and low rate-density experiments. We studied the detailed working behavior and performance of this readout, and demonstrated its functional validity and potential in imaging applications.

关键词： Electronic detector readout concepts (solid-state) Front-end electronics for detector readout Pixelated detectors and associated VLSI electronics VLSI circuits

来源：评论

学校读者我要写书评

暂无评论

Heteroepitaxial growth of 3C-SiC on SOI for sensor applications

Heteroepitaxial growth of 3C-SiC on SOI for sensor applicati...

引用

2nd European Conference on Silicon Carbide and Related Materials (ECSCRM 98)

作者： Krötz, G Möller, H Eickhoff, M Zappe, S Ziermann, R Obermeier, E Stoemenos, J Daimler Benz AG Dept FT2M D-81663 Munich Germany Tech Univ Berlin Berlin Germany Aristotelian Univ Salonika GR-54006 Salonika Greece

Typical industrial high temperature sensor applications are reviewed and a short overview of the different high temperature sensor technologies is given. The pros and cons are weighted. Silicon carbide on insulator (SiCOIN) technology comes out to be the most attractive, provided the state of development can be brought up to the one of silicon and silicon on insulator (SOT). Due to the lack of commercially available SIC on SOI wafers, a new SiC on SOI technology has been developed. It is based on the precursor gas methylsilane. The low temperature growth process is described and in-situ n-type doping, which is necessary for sensor applications, has been carried out successfully over a wide range of concentrations without loosing the good crystal properties. Actually the full process is being transferred from a test reactor to a 4 inch machine. This should provide 3C-SiC on SOI wafers for commercial sensor applications. A demonstrator of combustion pressure sensor dedicated to pressure-based engine control is shown. Results of the pressure sensor fitted in a motor-test setup are summarized. (C) 1999 Elsevier Science S.A. All rights reserved.

关键词： Semiconducting silicon compounds

来源：评论

学校读者我要写书评

暂无评论

Detection of fluorescence lifetime based on solid state technology and its application to optical oxygen sensing

Detection of fluorescence lifetime based on solid state tech...

引用

Advances in Fluorescence Sensing Technology ii

作者： Gruber, Wolfgang R. O'Leary, Paul Wolfbeis, Otto S. Joanneum Research Graz Austria

ISBN: (纸本)0819417351

This paper presents the development of an instrument using solid state components for luminescence lifetime based sensing. For a number of applications luminescence lifetime based sensing is the preferred method because of its inherent referencing possibility. Further, lifetime based instrumentation promises a simplified optical construction, since the measurement is, within certain limits, independent of the signal intensity. Various measurement schemes have been reported, especially for optical oxygen sensors, using dynamic fluorescence quenching as the information carrier. However, most of them require bulky and expensive instrumentation because of the need for high-frequency modulated excitation sources and detection systems. In general photo- multipliers have been required. We report on the development of a measurement scheme using low-cost semiconductor devices (light emitting diodes, photo-diodes). The detection system is based on heterodyne demodulation techniques for reduction of the signal frequency range. The basic principles of the system is described and a comparison with existing measurement schemes is presented. The capabilities of the system are demonstrated with measurements on two sensor types having luminescence lifetimes in the range of 1 μs and 50 μs. Finally, a custom CMOS integrated circuit is presented which implements the front-end of the detection system.

关键词： Fluorescence

来源：评论

学校读者我要写书评

暂无评论

Quantum efficiency and dark current evaluation of a backside illuminated CMOS image sensor

Quantum efficiency and dark current evaluation of a backside...

引用

International Conference on solid state Devices and Materials (SSDM 2014)

关键词： Quantum efficiency

来源：评论

学校读者我要写书评

暂无评论

First assessments into the use of commercial-grade solid state lidar for low cost heritage documentation 24

First assessments into the use of commercial-grade solid sta...

引用

2021 24th ISPRS Congress Commission ii: Imaging Today, Foreseeing Tomorrow

作者： Murtiyoso, A. Grussenmeyer, P. Landes, T. Macher, H. Université de Strasbourg INSA Strasbourg CNRS ICube Laboratory UMR 7357 Photogrammetry and Geomatics Group Strasbourg67000 France

Heritage documentation has benefitted greatly from significant developments in sensor technology during the past two decades. Miniaturisation of sensors is also an important aspect in the development of low cost sensors, always interesting in heritage projects where budgetary constraints are often present. Among these sensors, the solid-state lidar has begun to attract attention, partly due to its integration in Apple Inc.'s latest version of the iPhone and iPad series. We hypothesise that this type of sensor will see a lot of use in the near future;however, the question remains whether they are sufficient for heritage documentation purposes. In this paper, results from the 2020 iPad Pro SSL point cloud will be assessed and compared to more traditional techniques for 3D scanning (photogrammetry and terrestrial laser scanning). While understandably the geometric quality of benchmark-level techniques such as these remain undeniably better, at least for the moment, the paper concludes that SSL sensors may nevertheless be sufficient for some lower-precision applications. © 2021 International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives. All rights reserved.

关键词： Optical radar

来源：评论

学校读者我要写书评

暂无评论

PERFORMANCE OF A ***-M, 1-JOULE COHERENT LAUNCH SITE ATMOSPHERIC WIND SOUNDER 2

PERFORMANCE OF A ***-M, 1-JOULE COHERENT LAUNCH SITE ATMOSPH...

引用

CONF ON sensorS AND sensor SYSTEMS FOR GUIDANCE AND NAVIGATION 2

作者： HAWLEY, JG TARG, R BRUNER, R HENDERSON, SW HALE, CP VETORINO, S LEE, RW HARPER, S KHAN, T Lockheed Missiles and Space Company Inc. Research and Development Division Dept. 97-01 3251 Hanover St. Palo Alto 94304 CA United States Coherent Technologies Inc. 3300 Mitchell Lane Boulder 80301 CO United States Lassen Research 300 Salem St. Chico 95928 CA United States

ISBN: (纸本)081940859X

The Coherent Launch Site Atmospheric Wind Sounder (CLAWS) is a test and demonstration program to investigate the feasibility of using a solid-state coherent lidar to obtain wind data from the surface to 20 km or more altitude in real time for launch site vehicle guidance and control (G&C) applications.1 This paper discusses the design and tests of a 1-J coherent lidar. © 1992 SPIE. All rights reserved.

关键词： Optical radar

来源：评论

学校读者我要写书评

暂无评论

Combining nanoimprint lithography with dynamic templating for the fabrication of dense, large-area nanoparticle arrays

Combining nanoimprint lithography with dynamic templating fo...

引用

作者： Golze, Spencer D. Temple University

学位级别：M.S.

The study of nanomaterials is a developing science with potentially large benefits in the development of catalysts, optical and chemical sensors, and solid state memory devices. As several of these devices require large arrays of nanoparticles, one of the greatest obstacles in material characterization and device development is the reliable manufacture of nanopatterns over a large surface area. In addition, various applications require different nanoparticle size and density. High density arrays with small nanoparticle sizes are difficult to achieve over a large surface area using current manufacturing processes. Herein, Nanoimprint Lithography (NIL) and Dynamic Templating are combined to create a new manufacturing process capable of developing high density arrays with small nanoparticle sizes. The NIL process involves the stamping of a polymer coated substrate by a silicon stamp with patterned nanofeatures. The stamp is then removed, leaving the pattern in the polymer, which is first etched and then coated with a thin layer of metal, filling the recessed regions of the pattern. The excess polymer is dissolved, leaving a pattern of nanoparticles on the substrate matching the pattern on the stamp. When Dynamic Templating is applied, a very thin layer of metal can be coated, which forms small nanoparticle sizes when dewetted. A custom NIL system has been developed to combine these two processes together, which has now proven to yield consistent large-area, dense arrays with a small nanoparticle size. An array spacing of 700 nm has been achieved, along with a nanoparticle size of 90 nm. arrays have been created in gold and palladium, where there is now the potential to combine them with other solution-based syntheses which should lead to complex nanoparticle geometries suitable for sensor applications.

关键词：

来源：评论

学校读者我要写书评

暂无评论

联吡啶钌修饰电极固相电致化学发光

引用

化学进展 2008年第2期20卷 362-367页

作者：陶颖林志杰陈晓梅陈曦厦门大学化学化工学院化学系现代分析科学教育部重点实验室厦门361005

由于电致化学发光(ECL)的连续可测性、高灵敏度、稳定和方法简单,被广泛应用于分子生物学、药学、化学和环保等领域。而将可电化学再生的ECL试剂固定于电极表面,可获得ECL传感器,从而减少分析过程中试剂的消耗并简化实验装置。联吡啶钌... 详细信息

由于电致化学发光(ECL)的连续可测性、高灵敏度、稳定和方法简单,被广泛应用于分子生物学、药学、化学和环保等领域。而将可电化学再生的ECL试剂固定于电极表面,可获得ECL传感器,从而减少分析过程中试剂的消耗并简化实验装置。联吡啶钌及其衍生物在电极表面的固定化研究成为ECL研究的重要方向。本文综述了2004年以来联吡啶钌及其衍生物修饰电极的固相ECL的研究进展,并简要介绍了各种固定方法及其相关的应用情况。

关键词：固相电致化学发光联吡啶钌修饰电极

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：