Liquid Crystalline Semiconductors: Materials, properties and applications by Richard J. BushbyLiquid Crystalline Semiconductors: Materials, properties and applications by Richard J. Bushby

Liquid Crystalline Semiconductors: Materials, properties and applications

byRichard J. BushbyEditorStephen M. Kelly, Mary O'Neill

Paperback | December 14, 2014

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Liquid Crystals [LCs] are synthetic functional materials par excellence and are to be found in many types of LCDs; LCs self-assemble into ordered, but fluid, supramolecular structures and domains; they can be oriented in large homogeneous monodomains by electric and magnetic fields, Langmuir Blodgett techniques and also by self-orientation on suitable alignment layers; they are also anisotropic with preferred axes of light absorption, emission and charge transport with excellent semiconducting properties; they are soluble in organic solvents and can be deposited as uniform thin layers on device substrates, including plastic, by low-cost deposition processes, such as spin coating and doctor blade techniques; reactive mesogens [polymerisable LC monomers] can be photopatterned and fixed in position and orientation as insoluble polymer networks. LCs are increasingly being used as active components in electronic and photonic organic devices, such as Organic Light-Emitting Diodes [OLEDs], Organic Field Effect Transistors [OFETs], Thin Film Transistors [TFTs] and photovoltaic cells [PVs]. Such devices on plastic substrates represent a major component of the plastic electronics revolution. The self-assembling properties and supramolecular structures of liquid crystals can be made use of in order to improve the performance of such devices. The relationships between chemical structure, liquid crystalline behaviour and other physical properties, such as charge-transport, photoluminescence and electroluminescence are discussed and explained. For example, high carrier-mobility, polarised emission and enhanced output-coupling are identified as the key advantages of nematic and smectic liquid crystals for electroluminescence. The advantageous use of anisotropic polymer networks formed by the polymerisation of reactive mesogens [RMs] in devices with multilayer capability and photopatternability is described. The anisotropic transport and high carrier mobilities of columnar liquid crystals make them promising candidates for photovoltaics and transistors. The issues in the design and processing of liquid crystalline semiconductors for such devcies with improved performance are described. The photonic properties of chiral liquid crystals and their use as mirror-less lasers are also discussed.

Title:Liquid Crystalline Semiconductors: Materials, properties and applicationsFormat:PaperbackDimensions:274 pages, 23.5 × 15.5 × 0.02 inPublished:December 14, 2014Publisher:Springer-Verlag/Sci-Tech/TradeLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:9400795572

ISBN - 13:9789400795570

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Table of Contents

Preface.- 1 Introduction.- 2 Charge Transport in Liquid Crystalline Semiconductors.- 3 Columnar Liquid Crystalline Semiconductors.- 4 Synthesis of Columnar Liquid Crystals.- 5 Charge Transport in Reactive Mesogens and Liquid Crystal Polymer Networks.- 6 Optical Properties of Liquid Crystals.- 7 Organic Light-Emitting diodes (OLEDs) and OLEDs with Polarised Emission.- 8 Liquid Crystals for Organic Photovoltaics.- 9 Liquid Crystals for Organic Field-Effect Transistors.