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Quantum Efficiency in Complex Systems
Summary: Radiationless transfer of excitation energy is at the hear of many processes in quantum physics, chemistry and nanotechnology. Currently, the standard picture of an incoherent Förster resonant excitation transfer is being challenged by the experimental findings of a long-lived quantum mechanical coherence in biomolecular light harvesting complexes. The role of this in molecular aggregates is addressed in the first part of this volume. Utilizing some of the underlying principles to optimize nano scale devices, the second part addresses systems of colloid quantum dots and polymer based organic solar cells.
Physics of Solar Cells
The new edition of this highly regarded textbook provides a detailed overview of the most important characterization techniques for solar cells and a discussion of their advantages and disadvantages. It describes in detail all aspects of solar cell function, the physics behind every single step, as well as all the issues to be considered when improving solar cells and their efficiency. The text is now complete with examples of how the appropriate characterization techniques enable the distinction between several potential limitation factors, describing how quantities that have been introduced theoretically in earlier chapters become experimentally accessible. With exercises after each chapter to reinforce the newly acquired knowledge and requiring no more than standard physics knowledge, this book enables students and professionals to understand the factors driving conversion efficiency and to apply this to their own solar cell development.
Pennsylvania German Church Records of Births, Baptisms, Marriages, Burials, Etc
This is the first volume of "Pennsylvania German Church Records," a three-volume series which gives the genealogist access to all of the church records ever published in the Proceedings and Addresses of the Pennsylvania German Society. In each of the three volumes are births, baptisms, marriages and burials, the records that identify people and their relationships to one another--not only parents and children, husbands and wives, but witnesses and sponsors as well. A staggering 125,000 persons are mentioned in these records, and every one of them is cited in the new indexes, which have been painstakingly compiled especially for this publication. The records themselves answer the usual who, where and when questions, but because of their magnitude, because of the vast number of people who figure in these records, they must now be accounted, in the aggregate, as the very basis of Pennsylvania-German genealogy.
Physics of Solar Cells
Peter Würfel describes in detail all aspects of solar cell function, the physics behind every single step, as well as all the issues to be considered when improving solar cells and their efficiency. Based on the highly successful German version, but thoroughly revised and updated, this edition contains the latest knowledge on the mechanisms of solar energy conversion. Requiring no more than standard physics knowledge, it enables readers to understand the factors driving conversion efficiency and to apply this knowledge to their own solar cell development.
The Perkiomen Region
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Building Healthy Places Toolkit
"This project was made possible through the generous financial support of the Colorado Health Foundation. Additional support for the ULI Building Healthy Places Initiative has been provided by the estate of Melvin Simon."
Introduction to Description Logic
The first introductory textbook on description logics, relevant to computer science, knowledge representation and the semantic web.
