Organic semiconductors physics

Recent developments in OLEDs have established a new category of organic semiconductors. Thus, we are now faced with the chance of establishing new organic semiconductor physics and to create new organic semiconductors. 

Dendrimers as active materials for LEDs have been researched now for almost eight years and enormous progress has been made in this time both in terms of synthetic procedures as well as and in particular with respect to device performance. Research into dendrimer-containing LEDs combines fundamental aspects of organic semiconductor physics, novel and highly sophisticated organic synthetic chemistry and elaborate device technology. Dendrimers provide a model ex-... 

Pfeiffer, M., Leo, K., Zhou, X. et al. 2003. Doped organic semiconductors Physics and application in light emitting diodes. Org. Electron. 4 89. 

The study of organic semiconductors and conductors is highly iaterdisciplinary, involving the fields of chemistry, soHd-state physics, engineering, and biology. This article provides a treatment of the theoretical aspects of organic semiconductors as well as an overview of recent advances ia the field and the uses of these materials based on their conductive and optical properties. 

Physical Properties Electrical. Electrical properties have been the main focus of study of organic semiconductors, and conductivity studies on organic materials have led to the development of materials with extremely low resistivities and large anisotropies. A discussion of conductivity behaviors for various classes of compounds follows. 

Kharkovskoe shosse 48, 02160, Kiev, Ukraine jotas mail.kar.net -Institute of Organic Chemistry the National Academy of Sciences of Ukraine, Murmanskaya str. 5, 02094, Kiev, Ukraine E-mail vik bpci.kiev.ua institute of Semiconductor Physics the National Academy of Sciences of Ukraine, pr.Nauki, 03028, Kiev, Ukraine E-mail kazants isp.kiev.ua... 

Fig. 19 The effect of doping on the density of states distribution in a disordered organic semiconductor at variable concentration of charged dopants. The energy scale is normalized to the width of the DOS, expressed through a, of the undoped sample. The parameters are the intrinsic site concentration V and the dopant concentration N. From [125] with permission. Copyright (2005) by the American Institute of Physics...

Carefully controlled studies of the growth of physically evaporated organic semiconductors on surfaces have shown that near monolayers may be deposited. 

Riess W, Beierlein TS, Riel H (2005) In Briitting W (ed) Physics of organic semiconductors. Wiley, Weinheim (pp 511-527, ISBN 3-527-40550-X)... 

Review of literature concerning the photochemistry of inorganic compounds shows us that a substantial progress was achieved during the past two decades in understanding the photophysical and photochemical properties of nanometer semiconductor particles [1-4] and structurally organized semiconductor materials, including the nanostructured semiconductor films, mesoporous molecular sieves [5 - 10] etc., and, also in the elaboration of physical and chemical techniques for their synthesis and examination of their photocatalytic activity in various chemical and electrochemical redox-processes. 

One of the motivations of the Raman study is the need to complement the findings on the IR activation of the symmetric modes of acceptors or donors in organic conductors. For instance, Bandrauk et al. [76] have found that the intensities of the Raman spectra of organic semiconductor K-TCNQ correlate fairly well with the dimerization phase transitions proposed for the salt. They have suggested that librations are important in describing the physical properties of the systems. 

Organic semiconductors. 2. Organic superconductors. 3. Organic conductors. I. Farges, Jean-Pierre. II. Series Applied physics (Marcel Dekker, Inc.) 4. 

No one could introduce this new book better than my old friend Professor Felix Gutmann, of Sydney, Australia. For more than twenty years, we have been together often in Nice, in Sydney, in Munich, and in Los Angeles. Felix Gutmann is co-author, with Lawrence Lyons of Brisbane, Australia, of a most remarkable volume, Organic Semiconductors, published in 1967 by John Wiley Sons, Inc., New York. This monumental book has received considerable support in the scientific community, and I have seen this book in many solid-state physics and chemistry laboratories and in libraries throughout the world. I hope that the present volume will enjoy the same level of success. 

---