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Organic laser diodes: modelling and simulation

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ISBN: 9783866443457 Year: Pages: X, 172 p. DOI: 10.5445/KSP/1000010486 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:00
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This thesis analyzes the impact of various loss processes on the threshold current density of organic semiconductor laser diodes by numerical simulation. Design concepts based on organic double-heterostructures are evaluated and design rules are derived which can be used in order to reduce the impact of loss processes and in order to improve the device performance.

Chapter 16 The organic Internet as a resilient practice (Book chapter)

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ISBN: 9781138065819 9781315159478 Year: Pages: 11 Language: English
Publisher: Taylor & Francis
Subject: Computer Science
Added to DOAB on : 2019-01-15 13:33:12

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The idea that digital and physical space are increasingly interconnected, and that architecture and urban design should be conceptualised beyond buildings, streets and so on, is rather old and well understood. What is less clear is the fact that digital space is socially and politically ‘produced’ in similarly complex ways to the physical. It is thus subject to power structures, manipulation tactics, fundamental rights, borders and constraints, despite its perceived ‘infiniteness’.

Organische Nanopartikel zum Aufbau photoaktiver Schichten Organischer Solarzellen

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ISBN: 9783731506270 Year: Pages: v, 237 p. DOI: 10.5445/KSP/1000065053 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Chemistry (General)
Added to DOAB on : 2019-07-30 20:02:00
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Nanoparticle dispersions were used to fabricate photoactive layers of organic solar cells from water or ethanol. By using a precipitation method the power conversion efficiencies of the nanoparticulate solar cells were similar to the ones obtained from the respective solution processed counter parts using a chlorinated solvent. Next to the thoroughly investigated material system P3HT:ICBA also the transfer to other material systems was examined.

Volatile Organic Compounds in Environment

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ISBN: 9783038425120 9783038425137 Year: Pages: VIII, 122 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Sciences
Added to DOAB on : 2017-10-02 11:42:58
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Volatile organic compounds (VOCs) are released from both static and mobile sources (e.g., industrial, transport, household, fossil fuels use, and many other sources). They are emitted into the atmosphere, taken up by plants, and ingested by animals to be bio accumulated along the food chain up to the apex predator. Many of these pollutants are classified as being toxic/carcinogenic by varying degrees and pose a worldwide risk to the environment and human health. Exposure (through different exposure pathways, i.e., inhalation, dermal absorption, ingestion, etc.) to those hazardous pollutants can damage the immune, neurological, reproductive (e.g., reduced fertility), developmental, and respiratory systems of humans and animals. More efforts are thus needed to improve the method of their detection and treatment. This Special Issue aims to present articles emphasizing more than one of all the available tools to monitor or treat VOCs: (1) measurement techniques for VOC; (2) treatment techniques for VOC; and (3) all important environmental issues associated with the management of VOCs.

Linking Optical and Chemical Properties of Dissolved Organic Matter in Natural Waters

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889450817 Year: Pages: 242 DOI: 10.3389/978-2-88945-081-7 Language: English
Publisher: Frontiers Media SA
Subject: Chemistry (General) --- Geography --- Oceanography --- Science (General)
Added to DOAB on : 2017-07-06 13:27:36
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A substantial increase in the number of studies using the optical properties (absorbance and fluorescence) of dissolved organic matter (DOM) as a proxy for its chemical properties in estuaries and the coastal and open ocean has occurred during the last decade. We are making progress on finding the actual chemical compounds or phenomena responsible for DOM’s optical properties. Ultrahigh resolution mass spectrometry, in particular, has made important progress in making the key connections between optics and chemistry. But serious questions remain and the last major special issue on DOM optics and chemistry occurred nearly 10 years ago. Controversies remain from the non-specific optical properties of DOM that are not linked to discrete sources, and sometimes provide conflicting information. The use of optics, which is relatively easier to employ in synoptic and high resolution sampling to determine chemistry, is a critical connection to make and can lead to major advances in our understanding of organic matter cycling in all aquatic ecosystems. The contentions and controversies raised by our poor understanding of the linkages between optics and chemistry of DOM are bottlenecks that need to be addressed and overcome.

Organic Semiconductors

ISBN: 9783906980966 9783906980973 Year: Pages: 260 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Added to DOAB on : 2015-10-22 07:55:44
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Over the last few years Organic Semiconducting industry showed significant growth in many areas dominated by conventional electronics. The foremost advantage of organic materials is that they are cheap, lightweight and flexible. In addition, the fabrication of organic materials from a defined molecular precursor using inkjet−printing technology is simple, bypassing the need for advanced semiconductor processing techniques. Organic thin films have already found confirmed and reliable applications in flexible displays, solar cells and biomedical applications, including implantable devices. Low cost materials, compatible with current organic electronic fabrication techniques and which improve device performance are in strong demand.This special issue of Organic Semiconductors covers Materials, Fabrication Techniques, Characterization, Devices and market adoption of Organic Semiconductors.

Integrative Research on Organic Matter Cycling Across Aquatic Gradients

Authors: --- --- --- --- et al.
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889452125 Year: Pages: 201 DOI: 10.3389/978-2-88945-212-5 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Oceanography --- Geography
Added to DOAB on : 2017-10-13 14:57:01
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The goal of this research topic was to motivate innovative research that blurs traditional disciplinary and geographical boundaries. As the scientific community continues to gain momentum and knowledge about how the natural world functions, it is increasingly important that we recognize the interconnected nature of earth systems and embrace the complexities of ecosystem transitions. We are pleased to present this body of work, which embodies the spirit of research spanning across the terrestrial-aquatic continuum, from mountains to the sea. Sincerely, The Editors

Organic Ligands in Marine Trace Metal Biogeochemistry

Authors: --- --- --- --- et al.
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889453764 Year: Pages: 303 DOI: 10.3389/978-2-88945-376-4 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Oceanography
Added to DOAB on : 2018-11-16 17:17:57
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This research topic highlights the most recent accomplishments of a Scientific Committee on Oceanic Research (SCOR) Working Group, SCOR WG 139: Organic Ligands - A Key Control on Trace Metal Biogeochemistry in the Ocean.

Spintronics with individual metal-organic molecules

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Book Series: Experimental Condensed Matter Physics / Karlsruher Institut für Technologie, Physikalisches Institut ISSN: 21919925 ISBN: 9783866446496 Year: Volume: 2 Pages: 110 p. DOI: 10.5445/KSP/1000022418 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Physics (General)
Added to DOAB on : 2019-07-30 20:01:58
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In this work two ideas of using individual metal organic molecules in applications for data storage are presented. On the one hand, metal-free phthalocyanine is used to form a GMR contact consisting of one single molecule leading to the world smallest magnetic sensor. On the other hand, chromium acetylacetonate was used to study the properties of magnetic molecules adsorbed on surfaces in order to build magnetic bits for date storage.

Photon upconversion heterostructures made from surface-anchored metal-organic frameworks

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Book Series: Schriften des Instituts für Mikrostrukturtechnik am Karlsruher Institut für Technologie / Hrsg.: Institut für Mikrostrukturtechnik ISSN: 18695183 ISBN: 9783731508632 Year: Volume: 40 Pages: XVII, 147 p. DOI: 10.5445/KSP/1000087374 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:01:58
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This work deals with the process of photon upconversion in surface-anchored metal-organic frameworks. During the upconversion, two low-energy photons are absorbed and fused into a higher-energy photon, which is emitted. In this work, this process is analyzed in surface-bound metal-organic frameworks by spectroscopic methods. Furthermore, the application for increasing the efficiency of solar cells is discussed.

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