Photoconductivity of Electron Acceptors PDF Download

Author: Tapan K. Mukherjee
Publisher:
ISBN:
Category : Electrophiles
Languages : en
Pages : 16

View

Book Description

Author: David Richard Kearns
Publisher:
ISBN:
Category : Photoconductivity
Languages : en
Pages : 126

View

Book Description

Author: Tapan K. Mukherjee
Publisher:
ISBN:
Category : Electrophiles
Languages : en
Pages : 0

View

Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description
Techniques involving the use of high-intensity, shortduration light pulses were applied to the study of the kinetics of photoconductivity in films of metal-free phthalocyanine. These experiments, in conjunction with measurements of steady-state photoconductivity indicate that the principal route for the formation of charge carriers is via the first excited singlet state of phthalocyanine, although the lowest triplet stats can to some extent contribute to changecarrier production. Consistent with a variety of steadystate and kinetic conductivity measurements, a mechanism is proposed for the ionization of the excited states of phthalocyanine to form charge carriers. This mechanism is strongly supported by the studies of the effects of electron acceptors and donors on the electrical properties of phthalocyanine. A method was developed to measure the diffusivity and mobility of the majority charge carrier. Such measurements lead to a room-tempenature value of approximately 10/sup -3/ cm/ sup 2/v-sec for the mobility of positive-charge carriers (holes) in phthalocyanine. An interpretation of the kinetics of flash-photoconductivity decay suggested that the mobility of charge carriers is concentration-dependent, being lower at high carrier concentration. The decay of the photocurrent is suggested to be the result of a diffusionlimited bimolecular recombination of electrons and holes, with a recombination radius of approximatsly one molecular diameter. (auth).

Author: Safa O. Kasap
Publisher: John Wiley & Sons
ISBN: 1119579112
Category : Technology & Engineering
Languages : en
Pages : 919

View

Book Description
Explore an authoritative resource with coverage of foundational concepts of photoconductivity and photoconductive materials In Photoconductivity and Photoconductive Materials, Professor Kasap delivers a definitive guide to the basic principles of photoconductivity and a selection of present topical photoconductive materials. Divided into two parts, the set begins with basic concepts and definitions and coverage of characterization using steady state, transient and modulated photoconductivity techniques, including the novel charge extraction by linearly increasing voltage (CELIV) method The physics of terahertz photoconductivity and fundamentals of organic semiconductors lsois are also covered. Part Two of the set starts with a comprehensive review of a wide range of photoconductive materials and then focuses on some of the most important photoconductors, including hydrogenated amorphous silicon, cadmium mercury telluride, various x-ray photoconductors, diamond films, metal halide perovskites, nanowires and quantum dots. Photoconductive antenna application is also included. Filled with contributions from leading authors in the field, this book also offers: A thorough introduction to the characterization of semiconductors from photoconductivity techniques, including uniform illumination and photocarrier grating techniques Comprehensive explorations of organic photoconductors, including photogeneration, transport, and applications in printing Practical discussions of time-of-flight transient photoconductivity, including experimental techniques and interpretation In-depth examinations of transient photoconductivity of organic semiconducting films and novel transient photoconductivity techniques Perfect for research physicists, materials scientists, and electrical engineers, Photoconductivity and Photoconductive Materials is also an indispensable resource for postgraduate and senior undergraduate students working in the area of optoelectronic materials, as well as researchers working in industry.

Author: David R. Kearns
Publisher:
ISBN:
Category :
Languages : en
Pages : 121

View

Book Description

Author: Richard H. Bube
Publisher:
ISBN:
Category : Photoconductivity
Languages : en
Pages : 492

View

Book Description

Author: Richard H. Bube
Publisher: Cambridge University Press
ISBN: 9780521406819
Category : Technology & Engineering
Languages : en
Pages : 340

View

Book Description
The interaction between light and electrons in semiconductors forms the basis for many interesting and practically significant properties. This book examines the fundamental physics underlying this rich complexity of photoelectronic properties of semiconductors, and will familiarise the reader with the relatively simple models that are useful in describing these fundamentals. The basic physics is also illustrated with typical recent examples of experimental data and observations. Following introductory material on the basic concepts, the book moves on to consider a wide range of phenomena, including photoconductivity, recombination effects, photoelectronic methods of defect analysis, photoeffects at grain boundaries, amorphous semiconductors, photovoltaic effects and photoeffects in quantum wells and superlattices. The author is Professor of Materials Science and Electrical Engineering at Stanford University, and has taught this material for many years. He is an experienced author, his earlier books having found wide acceptance and use. Readers will therefore find this volume to be an up-to-date and concise summary of the major concepts, models and results. It is intended as a text for graduate students, but will be an important resource for anyone researching in this interesting field.

Author: Norbert Auner
Publisher: John Wiley & Sons
ISBN: 3527620745
Category : Science
Languages : en
Pages : 742

View

Book Description
Organosilicon Chemistry at its best ...((kursiv)) Like its two hugely successful predecessors, the third volume again presents the latest developments in a rapidly developing field of industsrial and academic research. The contributions from approx. 80 internationally renowned experts and researchers in this fascinating part of the rapidly growing field of main group chemistry describe current trends in organosilicon chemistry and provide summaries of the latest (1997!) knowledge in this area. To facilitate access to the ongoing research this volume is split into two parts, each with a comprehensive introduction: Part 1: Fascinating Organosilicon Compounds Part 2: Silicon Based Materials

Author: Angelos V. Patsis
Publisher: CRC Press
ISBN:
Category : Science
Languages : en
Pages : 408

View

Book Description