PPT-Anomalous X-ray Diffraction Studies for Photovoltaic Applic

Grisel Rivera Batista Science Undergraduate Laboratory Internship Program August 12 2010 Advantages of AXRD Sensitive to N eighboring elements in the periodic table Specific crystallographic phase. Session 5. DAMON FYSON. Photovoltaic cells. Session 5. Photovoltaic . cells are made of high-grade silicon, a semi-conductor. . When sunlight . shines on a PV cell electrons break free and create an electrical current. content. Review. introduction. Technology. application. Solar thermal . review. introduction. What . does photovoltaic mean?. Photovoltaic systems contain cells that convert. sunlight into electricity. Inside each cell there are. Wave Optics. The wave nature of light is needed to explain various phenomena. Interference. Diffraction. The . particle nature of light was the basis for ray (geometric) . optics. Light waves interfere with each other much like mechanical waves do. content. Review. introduction. Technology. application. Solar thermal . review. introduction. What . does photovoltaic mean?. Photovoltaic systems contain cells that convert. sunlight into electricity. Inside each cell there are. Chapter. 36. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 36-1. Single-Slit Diffraction. 36.01 . Describe the diffraction of light waves by a narrow opening and an edge, and also describe the resulting interference pattern.. deposition . activities . . of . the . crystallographic . community . .  . John R . Helliwell. and Brian McMahon. This Session . Includes several major databases encompassing many fields of the . not . from pigmentation (dull brown) but from interference in small structures on the wings. 200 . micron . scale photo. 1. Incandescent bulb viewed through a diffraction grating.. Office Hours: I am available before class 11:30-12:10 MWF and after class on Monday and Friday in WAT 233 and by arrangement (. Learning Goals for Chapter 36. Diffraction. vs. . Interference. Single-slit vs. Multiple-slit diffraction. Calculating intensity . at . points . in . single-slit pattern. .. X. -ray . diffraction reveals . History. 1895. Wilhelm Conrad R. ӧ. ntgen. discovered . X-rays. 1905 . Albert Einstein introduces the concept of photons (concept not accepted until 1922). 1913 . Max von . Laue, . Walter Friedrich . Diffraction of Light. Newton pointed . out in his 1704 book . Opticks. , that "Light is never known to follow crooked passages nor to bend into the shadow". . This concept is consistent with the particle theory, which proposes that light particles must always travel in straight lines.. Instrument Report:. Contents. Diffraction Mechanism. C. onstruction . of . the . Diffractometer. Applications . of . XRD. Data . A. nalysis . and . Explanation. 2D XRD. XRD Simulation. Diffraction . Mechanism. Data Analysis. Scott A Speakman, Ph.D.. Center for Materials Science and Engineering at MIT. speakman@mit.edu. http://prism.mit.edu/xray. . An X-ray diffraction pattern is a plot of the intensity of X-rays scattered at different angles . 6-x. Au. x. system hosts the first known example of an elastic quantum critical point. Neutron and x-ray diffraction measurements were performed to study the structural properties as a function of temperature and Au-composition. First principle calculations confirm that the phase transition is driven by an elastic instability and is independent of electronic properties. Heat capacity measurements indicate the presence of quantum fluctuations at the critical composition. (. XRD. ). . X. -. R. ay . P. hotoelectron . S. pectroscopy. (. XPS. ). By:. . Roya. . Ayazi. . Nasrabadi. What is X. -. ray. ?. X-ray . diffraction. (. XRD. ). Bragg’s Law. n . λ. =2dsin. θ.