文档介绍：Solar aspects of papers
Anomalous Diffraction Studies for Photovoltaic Applications (Solar Cells)
Grisel Rivera Batista
Department of Energy, Summer Undergraduate Laboratory Internship Program
Stanford University, Stanford
SLAC National Accelerator Laboratory
Menlo Park, California
July 21, 2010
Prepared in partial fulfillment of the requirement of the Office of Science, Department of
Energy’s Science Undergraduate Laboratory Internship.
Participant: ________________________________________
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Research Advisor: ________________________________________
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ANOMALOUS DIFFRACTION STUDIES
FOR PHOTOVOLTAIC APPLICATION
(SOLAR CELLS)
Introduction
The physical and chemical arrangement of atoms in a solid determines optical, electronic, and conductive properties of pounds. The method of X-ray diffraction represents a basic part of solid analysis. Its use was the base of the development of other similar methods as Anomalous X-ray Diffraction (AXRD). The difference of AXRD is that the atomic scattering strength (fn) varies near X-ray absorption edge. Also when varying X-ray energy near absorption edge it produces a total intensity changes. And the fn depends on oxidation state of the element.
This method (AXRD) can be applied to both crystalline and liquid materials. One of the advantages of AXRD in crystallography experiments is its sensitivity to neig