Publication

Laterally Resolved Measurements of Cesium Iodide Quantum Yield

Giorgio Margaritondo
1995
Journal Articles

Abstract

Spatially resolved x-ray secondary electron photoemission spectra revealed lateral changes in quantum efficiency and chemical composition of polycrystalline cesium iodide photodetectors. Such changes depend on the substrate (stainless steel or aluminum). These results emphasize the limitations of conventional, spatially integrated quantum efficiency measurements, and shed new light on the chemical properties of inhomogeneous polycrystalline cesium iodide. (C) 1995 American Vacuum Society.

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https://infoscience.epfl.ch/entities/publication/8aa31be9-35b4-43b6-85db-95c39438295c

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Giorgio Margaritondo
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/8aa31be9-35b4-43b6-85db-95c39438295c

About this result

Related concepts (29)

Chemical substance

A chemical substance is a form of matter having constant chemical composition and characteristic properties. Chemical substances can be simple substances (substances consisting of a single chemical element), chemical compounds, or alloys. Chemical substances that cannot be separated into their simpler constituent elements by physical means are said to be 'pure'; this notion intended to set them apart from mixtures.

Chemical thermodynamics

Chemical thermodynamics is the study of the interrelation of heat and work with chemical reactions or with physical changes of state within the confines of the laws of thermodynamics. Chemical thermodynamics involves not only laboratory measurements of various thermodynamic properties, but also the application of mathematical methods to the study of chemical questions and the spontaneity of processes. The structure of chemical thermodynamics is based on the first two laws of thermodynamics.

Chemical composition

A chemical composition specifies the identity, arrangement, and ratio of the chemical elements making up a compound by way of chemical and atomic bonds. Chemical formulas can be used to describe the relative amounts of elements present in a compound. For example, the chemical formula for water is H2O: this means that each molecule of water is constituted by 2 atoms of hydrogen (H) and 1 atom of oxygen (O). The chemical composition of water may be interpreted as a 2:1 ratio of hydrogen atoms to oxygen atoms.

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Laterally Resolved Measurements of Cesium Iodide Quantum Yield

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