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Friday, February 7, 2020 | History

3 edition of Organic photovoltaics found in the catalog.

Organic photovoltaics

Organic photovoltaics

3 August 2000, San Diego, USA

by

  • 236 Want to read
  • 4 Currently reading

Published by SPIE in Bellingham, Wash .
Written in English

    Subjects:
  • Photovoltaic cells -- Technological innovations -- Congresses.,
  • Photovoltaic cells -- Materials -- Congresses.,
  • Organic semiconductors -- Technological innovations -- Congresses.,
  • Photoelectrochemistry -- Congresses.

  • Edition Notes

    Includes bibliographical references and index.

    StatementZakya H. Kafafi, chair/editor ; sponsored ... by SPIE--the International Society for Optical Engineering.
    GenreCongresses.
    SeriesSPIE proceedings series ;, v. 4108, Proceedings of SPIE--the International Society for Optical Engineering ;, v. 4108.
    ContributionsKafafi, Zakya H., Society of Photo-optical Instrumentation Engineers.
    Classifications
    LC ClassificationsTK8322 .O74 2001
    The Physical Object
    Paginationvii, 126 p. :
    Number of Pages126
    ID Numbers
    Open LibraryOL3579263M
    ISBN 100819437530
    LC Control Number2002265151
    OCLC/WorldCa46654461

    The characteristics of photovoltaic devices with different active areas Galagan et al. Excitons created in the active material may diffuse before recombining and separate, hole and electron diffusing to its specific collecting electrode. In developing OPV devices, the NCPV is making advances in materials, deposition and processing of materials, and fabrication of devices under ambient temperature and pressure conditions. Similar to the printing of newspapers and magazines, OPVs can be fabricated on thin plastics at a high throughput on a continuously moving roll-to-roll web. Below is a list of the projects, summary of the benefits, and discussion on the production and manufacturing of this solar technology. It is necessary that the acceptor material has a conduction band edge that is lower than that of the absorber material.

    Along with our painstaking and meticulous volume editors, full credit for the success of this enterprise must go to these individuals, together with our thanks for largely adhering to the given deadlines. Improving the conductivity of such polymeric electrode is possible by combining it with a metal grid, which is either thermally evaporated through micro structured shadow masks Zimmermann et al. The layer with higher electron affinity and ionization potential is the electron acceptor, and the other layer is the electron donor. OPVC are lower in efficiency, stability and strength when compared to their inorganic equivalents.

    We must understand the fundamentals of device operation, including charge-separation processes, charge-transport mechanisms, device physics, and interfacial effects. The cell's efficiency is limited by several factors, especially non-geminate recombination. Large domains prevent electrons from being collected efficiently decreasing PCE. Structure of Organic Solar Cell For organic solar cells based on polymer: fullerene bulk heterojunctions, the magnitude of JSC, VOC, and FF depends on parameters such as: light intensity [ 10 ], temperature [ 1112 ], composition of the components [ 13 ], thickness of the active layer [ 14 ], the choice of electrodes used [ 1516 ], as well as the solid state morphology of the film [ 17 ].


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Organic photovoltaics book

Considering there is about more times energy than our current consumption free to harvest, even if we can just get a tiny fraction of that energy, it will reduce our hunger for energy significantly United States. Bilayer cells contain two layers in between the conductive electrodes Fig 3.

Organic photovoltaics can be fabricated with an active polymer and a fullerene-based electron acceptor. Issues Fullerenes such as PC71BM are often the electron acceptor materials found in high performing bulk heterojunction solar cells.

It also has the highest power density among renewable energies. Here, the high sheet resistance of the electrode may, therefore, reduce the fill factor. There are a lot of publications where all-solution processed OPV devices with inverted structures have been reported Krebs et al.

Donor or acceptor accumulation next to the adjacent layers might be beneficial as these accumulations can lead to hole or electron blocking effects which might benefit device performance. There is no restriction on the size and shape of OPV devices, and every conceivable shape and form can be envisioned, with only human synthetic capability as the limiting factor.

We have greatly enjoyed working with them all, as we have with each other. In developing OPV devices, the NCPV is making advances in materials, deposition and processing of materials, and fabrication of devices under ambient temperature and pressure conditions.

Renewable Energy/Solar Photovoltaic (PV)

Screen printed silver grids Krebs, d ; Krebs et al. Below is a list of the projects, summary of the benefits, and discussion on the production and manufacturing of this solar technology. The OPV team employs a system for testing Organic photovoltaics book long-term stability of hundreds of prototype cells in parallel to rapidly screen new materials and device concepts for stability.

In an electrical circuit, where the electrical conductors are attached to the positive and negative sides, the electrons can be captured as electricity which can then be used. Thus, to reach the goal of low-cost manufacturing, all layers in OPV devices should be solution processed.

Check out the table below to see more advantages of OPVs. The nanostructural morphology of bulk heterojunctions tends to be difficult to control, but is critical to photovoltaic performance. Figure 8. This architecture combines the short electron travel distance in the dispersed heterojunction with the advantage of the charge gradient of the bilayer technology.

We develop atmospherically processable materials that include metals, semiconductors, and oxides. The fill factor depends on the series resistance Rs of solar cells. He followed a call to the University of Potsdam, Germany, onto a professorship for polymer chemistry.

In order to cover a large fraction of the solar spectrum, the donor and acceptor materials chosen for OPVs have broad absorbance lines and high extinction coefficients, giving a high optical density for thin films.

The devices can be in the form of fibers, woven to fabrics, bent or rolled as films on curved surface. The DA solar cells apply the photo induced electron transfer [ 5 ] to separate the electron from the hole. OHJs are generally hybrids of ordered inorganic materials and organic active regions.

With technical advances in a variety of nanoscale fabrication and manipulation technologies, the whole topical area is maturing into a vibrant field that is generating new scientific research and a burgeoning range of commercial applications, with an annual market already at the trillion dollar threshold.

Solar Photovoltaic Technology. Additional attractive features of organic PVs are the possibilities for thin flexible devices which can be fabricated using high throughput, low temperature approaches that employ well established printing techniques in a roll-to-roll process [ 89 ].

Lastly, we record our sincere thanks and appreciation for the skills and professionalism of the numerous Elsevier staff who have been involved in this project, notably Fiona Geraghty, Megan Palmer and Greg Harris, and especially Donna De Weerd-Wilson who has steered it through from its inception.

He obtained his diploma degree in physics from the University of Saint Petersburg, his Ph. As the evidence of global warming continues to build-up, it is becoming clear that we will have to find ways to produce electricity without the release of carbon dioxide and other greenhouse gases.

This structure is also called a planar donor-acceptor heterojunction. The brittle ITO layer can be easily cracked, leading to a decrease in conductivity and as a result degradation of the device performance.One of the major challenges faced in the field of organic photovoltaics is the limited stability of devices.

Although impressive recent stability results have been achieved in accelerated degradation tests, organic solar cells do not yet achieve lifetimes of more than a few thousand hours, limiting their scope to small-scale consumer products. Organic photovoltaic (OPV) cells have the potential to make a significant contribution to the increasing energy needs of the future.

In this book, 15 chapters written by selected experts explore the required characteristics of components present in an OPV device, such as transparent electrodes, elec. Apr 11,  · The versatility of organic photovoltaics is already well known and this completely revised, updated, and enlarged edition of a classic provides an up-to-date overview of this hot topic.

The proven structure of the successful first edition, divided into the three key aspects. Although many books currently exist on general concepts of PV and inorganic PV materials and devices, few are available that offer a comprehensive overview of recently fast developing organic and polymeric PV materials and devices.

Organic Photovoltaics: Mechanisms, Materials, and Devices fills this gap. The book provides an international. Photovoltaics based on organic semiconductors have emerged as promising low-cost alternatives for electricity generation that relies on sunlight.

In this tutorial review we discuss the relevance of these organic photovoltaics beginning with some of the economic drivers for these technologies. Life Cycle Assessment of Organic Photovoltaics, Third Generation Photovoltaics, Vasilis Fthenakis, IntechOpen, DOI: / Available from: Help us write another book on this subject and reach those readers.

Suggest a book topic Books open for submissions. chapter statistics. total chapter sylvaindez.com by: 3.