Luminescence of lead chloride and lead bromide single crystals: I. The excitation and emission spectra
作者： W.C. de Gruijter
DOI: 10.1016/0022-4596(73)90214-4
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摘要: Abstract The luminescence of very pure PbCl2 and PbBr2 single crystals has been studied at liquid nitrogen helium temperature. At 10 K, PbCl2, as well PbBr2, exhibits three emission bands in the spectral region investigated, viz., one ultraviolet part spectrum, a second blue third red. In addition, shows violet 5 K. If, 80 were exposed to radiation for hour or more, yellow appeared. Thin film absorption spectra both lead halides are discussed. band low energy is attributed creation cation exciton. excitation different emissions have measured. thin strongly correlated. All preferentially excited i.e., exciton band. discussed recombination excitons.
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