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Nanoscale investigation of potential distribution in operating Cu(In,Ga)Se2 thin-film solar cells

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ISBN: 9783866449787 Year: Pages: VII, 170 p. DOI: 10.5445/KSP/1000032483 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:00
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The distribution of the electrostatic potential in and between the materials in Cu(In,Ga)Se2 thin-film solar cells has a major impact on their superior performance. This thesis reported on the nanoscale imaging of the electrostatic potential on untreated cross sections of operating Cu(In,Ga)Se2 solar cells using Kelvin probe force microscopy.

Coating and drying processes for functional films in polymer solar cells - from laboratory to pilot scale

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ISBN: 9783731502012 Year: Pages: XII, 218 p. DOI: 10.5445/KSP/1000039966 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Chemical Engineering
Added to DOAB on : 2019-07-30 20:01:58
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Polymer solar cells can be produced by a continuous low cost coating and drying process. This work details a specialized experimental set-up to enable large scale roll to roll processing. Material properties such as surface energy, surface tension, and viscosity are presented and modelled. The impact of coating method, as well as process parameters (e.g. coating speed, shear rate, solvent composition) on process stability and film properties, is discussed.

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.

Herstellung und Charakterisierung mechanisch flexibler organischer Solarzellen durch Flüssigprozessierung

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ISBN: 9783731503996 Year: Pages: II, 137 p. DOI: 10.5445/KSP/1000047609 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
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This document presents the development and optoelectronic analysis of a flexible electrode system. The focus is the application of all functional layers out of solution to enable a cost effective processing with large area print and coating techniques. Moreover, the mechanical stability of the electrode system and the complete solar cell is investigated by tensile tests.

Plasmonics and its Applications

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ISBN: 9783038979142 9783038979159 Year: Pages: 196 DOI: 10.3390/books978-3-03897-915-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General)
Added to DOAB on : 2019-06-26 08:44:06
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Plasmonics is a rapidly developing field that combines fundamental research and applications ranging from areas such as physics to engineering, chemistry, biology, medicine, food sciences, and the environmental sciences. Plasmonics appeared in the 1950s with the discovery of surface plasmon polaritons. Plasmonics then went through a novel propulsion in the mid-1970s, when surface-enhanced Raman scattering was discovered. Nevertheless, it is in this last decade that a very significant explosion of plasmonics and its applications has occurred. Thus, this book provides a snapshot of the current advances in these various areas of plasmonics and its applications, such as engineering, sensing, surface-enhanced fluorescence, catalysis, and photovoltaic devices.

Surfaces and Interfaces for Renewable Energy

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ISBN: 9783039281282 9783039281299 Year: Pages: 108 DOI: 10.3390/books978-3-03928-129-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:08
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Environmental problems derived from the massive use of conventional energy resources are one of the main issues that our society has been facing in recent decades. Renewable energies (and particularly solar energy) have become a highly competitive means to meet the world’s increasing energy demands in a sustainable and clean manner. One of the key research challenges for the commercial deployment of several solar energy technologies is focused on the development of feasible and durable coatings that withstand appropriate optical and thermal performance over the lifetime of the solar facilities. This book addresses a number of relevant aspects related to coatings for renewable energies, including a deep survey of coatings used in photovoltaic solar energy, the development of a superhydrophobic and thermal stable silica coating that is potentially suitable for various industrial applications related to renewable technologies, the development of coatings to improve the resistance of structural materials used in concentrating solar thermal technologies with molten salts, and several research works related to solar reflectors for concentrating solar thermal technologies (such us the advanced analysis of the corrosion, the suitability of anti-soiling coatings, and the development of top protective coatings for high-temperature secondary concentrators).

Computational Intelligence in Photovoltaic Systems

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ISBN: 9783039210985 9783039210992 Year: Pages: 180 DOI: 10.3390/books978-3-03921-099-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 16:10:12
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Photovoltaics, among the different renewable energy sources (RES), has become more popular. In recent years, however, many research topics have arisen as a result of the problems that are constantly faced in smart-grid and microgrid operations, such as forecasting of the output of power plant production, storage sizing, modeling, and control optimization of photovoltaic systems. Computational intelligence algorithms (evolutionary optimization, neural networks, fuzzy logic, etc.) have become more and more popular as alternative approaches to conventional techniques for solving problems such as modeling, identification, optimization, availability prediction, forecasting, sizing, and control of stand-alone, grid-connected, and hybrid photovoltaic systems. This Special Issue will investigate the most recent developments and research on solar power systems. This Special Issue “Computational Intelligence in Photovoltaic Systems” is highly recommended for readers with an interest in the various aspects of solar power systems, and includes 10 original research papers covering relevant progress in the following (non-exhaustive) fields: Forecasting techniques (deterministic, stochastic, etc.); DC/AC converter control and maximum power point tracking techniques; Sizing and optimization of photovoltaic system components; Photovoltaics modeling and parameter estimation; Maintenance and reliability modeling; Decision processes for grid operators.

Novel Smart Textiles

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ISBN: 9783039285709 / 9783039285716 Year: Pages: 230 DOI: 10.3390/books978-3-03928-571-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Arts in general
Added to DOAB on : 2020-06-09 16:38:57
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The sensing, adapting, responding, multifunctionality, low energy, small size and weight, ease of forming, and low-cost attributes of smart textiles and their multidisciplinary scope offer numerous end uses in medical, sports and fitness, military, fashion, automotive, aerospace, the built environment, and energy industries. The research and development on these new and high-value materials cross scientific boundaries, redefine material science design and engineering, and enhance quality of life and our environment. “Novel Smart Textiles” is a focused Special Issue that reports the latest research of this field and facilitates dissemination, networking, discussion, and debate.

Keywords

e-textile --- metamaterials --- transmission line --- wearable --- split ring resonator --- dye-sensitized solar cell (DSSC) --- polyacrylonitrile (PAN) --- nanofiber mat --- electrospinning --- PEDOT:PSS --- dye-sensitized solar cell --- half-textile --- spectral analysis --- parameter identification --- equivalent circuit --- black-box --- grey-box --- power spectral density --- optimization --- analytical model --- electromagnetic shielding effectiveness --- electric properties --- fabric --- woven textiles --- carbon nanomaterials --- smart fabrics --- in-line monitoring --- polymeric composites --- carbon nanotubes --- reduced graphene oxide --- textile electrode --- ECG --- motion sensor --- skin-electrode impedance --- electrically conductive textiles --- polymers --- smart textiles --- surface area evaluation --- microencapsulation --- biofunctional --- drug-delivery --- textile-based stretch sensors --- stitch structure --- wearable stretch sensor --- conductive thread --- conductivity --- metal flake --- coating --- e-textile --- encapsulation --- durability --- stiffness --- textile/polymer composite --- stretchable electronics --- smart textiles --- mechanical and electrical properties --- quasi-static and cyclic mechanical loading --- life-time expectancy --- smart textile --- thermal textile pixel --- thermal communication --- non-auditory and nonvisual communication --- thermal conductivity --- Peltier element --- SMART pattern-changing fabric --- pattern effect --- visual response --- visual brain --- event-related potential (ERP) --- psychotextiles --- art and design --- smart textiles --- textile sensors --- e-textiles --- visual brain --- thermal textile pixels --- stretchable electronics --- conductive textiles --- wearables --- stitch-based sensors --- biofunctional textiles --- ECG --- hybrid electrodes --- motion tracking --- carbon nanotextiles --- composites --- EMS textiles --- electrospun solar cells --- embroidered e-textiles --- targeted delivery --- psychotextiles --- energy harvesting --- multifunctional

Novel Photoactive Materials

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ISBN: 9783038976509 Year: Pages: 166 DOI: 10.3390/books978-3-03897-651-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Physics (General) --- Science (General)
Added to DOAB on : 2019-03-05 14:29:32
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Photoactivity represents the ability of a material, generally speaking a semiconductor, to become active when interacting with light. It can be declined in many ways, and several functionalities arising from this behavior of materials can be exploited, all leading to positive repercussions on our environment. There are several classes of effects of photoactivity, all of which have been deeply investigated in the last few decades, allowing to develop more and more efficient materials and devices. All of them share a common point, that is, the interaction of a material with light, although many different materials are taken into account depending on the effect desired—from elemental semiconductors like silicon, to more complex compounds like CdTe or GaAs, to metal oxides like TiO2 and ZnO. Given the broadness of the field, a huge number of works fall within this topic, and new areas of discovery are constantly explored. The special issue “Novel Photoactive Materials” has been proposed as a means to present recent developments in the field, and for this reason the articles included touch different aspects of photoactivity, from photocatalysis to photovoltaics to light emitting materials.

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