Effect of chlorine exposure on the thermo-reflectance spectra of lead chalcogenide films |
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| Authors: | A.K. Sood C.Y. Yang J.E. Fischer |
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| Affiliation: | The Moore School of Electrical Engineering and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Penn. 19174, U.S.A. |
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| Abstract: | Small crystallites of PbCl2 have been observed on Cl2- and air-exposed surfaces of PbS. Identification has been made by observing the fundamental exciton of PbCl2 in thermoreflectance, and by the EDAX technique in a scanning electron microscope. Similar effects occur on PbSe and PbTe. The phenomenon may be applicable to a low level integrating chlorine detector. |
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