Energy and Charge Transfer in Organic Semiconductors

ISBN-13: 9781468421118 / Angielski / Miękka / 2012 / 200 str.

Kohzoh Masuda

Opis

Great progress has been made in the field of ordinary semiconductor physics and associated technologies. For the time being, if we could use new materials such as organic semiconductors progress in electronics could be accelerated. Characteristics of organic semiconductors that are superior to others are: i) high photo-conductivity under irradiation along with low leakage current in the dark, ii) high sensitivity of the conductivity to various gases and to pressure. iii) possibility of using them in the amorphous state, iv) possibility of making devices of extremely small size, v) large variety of the materials, which makes suitable choice of material component easy. A possible future development is a highly conductive material which could be used for electric power transmission - and which might help solve some of the problems posed by transmission losses. The U.S.-Japan Seminar on Energy and Charge Transfer in Organic Semiconductors was held in Osaka Japan, 6-9 August, 1973. Completed results were summarized and the direction for the future was discussed. Information was exchanged quite freely and actively in a pleasant atmosphere. Many of the papers presented at the seminar are published here but unfortunately a few could not be included. It would give us great pleasure if this seminar could be one step in the further development of the research in this field.

Spis treści

Opening Address.- Charge Carriers.- Voltage Dependence of Unipolar Excess Bulk Charge Density in Organic Insulators.- Geminate Charge-Pair Recombination in Molecular Crystals.- Various Detrapping Processes in Anthraquinone-Doped Anthracene Crystal.- UV Excitation of Anthracene.- Photoconduction and Emission of Phthalocyanine in the Near Infrared.- Optical and Electron Paramagnetic Properties of Radicals in Naphthalene and Anthracene Crystals.- Contribution of Free Radicals to Electrical Conductivity.- Theory.- Green Function of an Exciton Coupled with Phonons in Molecular Crystals.- Theory of Frenkel Excitons Using a Two-Level-Atom Model.- Crystallization.- Glass-Forming Photoconductive Organic Compounds. I. Phase Change and Single Crystal Growth of 1,3-Diphenyl-5-(p-Chlorophenyl)-Pyrazoline.- Semi conductive Coordination Polymers: Dithiooxamides Copper Compounds.- Growth and Purification of Phthalocyanine Polymorphs.- Transport in Amorphous State and Polymers.- Mobility Measurements in Polymers by Pulsed Electron Beams.- Photoconductivity of Poly-N-Vinylcarbazole.- Sensitized Photocurrent in Dye-Deposited Poly-(N-Vinylcarbazole).- Charge Injection and Transport in Disordered Organic Solids.- Charge Transport in TNF:PVK and TNF: Polyester Films and in Liquid, Amorphous and Crystalline TNF.- Superconductivity.- The Problem of Superconductivity in Organic and Organo-Metallic Compounds.- Comments on the Metallic Conductivity in (TTF)(TCNQ) Complex.- Design and Study of 1-Dimensional Organic Conductors I: The Role of Structural Disorder.- Design and Study of 1-Dimensional Organic Conductors II: TTF-TCNQ and Other Organic Semimetals.- Solid Molecular Complexes.- The Structures and Properties of Solid Molecular Complexes and Radical Salts: A Brief Review of Recent Studies in Japan.- Microwave Dielectric Constants of Solid Molecular Complexes.- Electrical and Optical Properties of the Phenothiazine-Iodine and Related Complexes.- Author Index.