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Diffuse Reflectance Spectra of Some Compounds of Elements of IV A Group

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Diffuse reflectance spectra of lead halides, lead oxide, and stannic oxide have been studied in the region 1.2–6.20 eV. Four bands at 2.52, 3.10, 3.90, and 5.93 eV have been observed in pure samples of lead iodide while only three bands have been observed at 3.48, 4.08, and 5.17 eV and 4.30, 4.72 and, 5.90 eV, respectively, in samples of lead bromide and lead chloride. The assignment of these bands has been discussed in the light of band structure of lead halides. Two bands at 3.54 and 5.61 eV and one band at 5.64 eV have been observed in pure samples of lead oxide and stannic oxide, respectively. These bands have been assigned to band-to-band transitions.

Keywords: Reflectance spectroscopy; Semiconductors; Visible, spectroscopy

Document Type: Research Article


Affiliations: 1: Department of Physics, University of Jodhpur, Jodhpur, India 2: Department of Physics, University of Jodhpur, Jodhpur, India; Defense Laboratory, Jodhpur, India

Publication date: March 1, 1971

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