Optical and Electrical Properties of Uncolored and Colored Lead Doped Alkali Halides

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概要

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• The peak position and half-widths of bands characteristic of lead impurity in four alkali halides, NaCl, KCl, KBr and KI, are reported. Ionic conductivity studies have been made in the temperature range 150-600℃ in the four alkali halides doped with Pb. The values of the energy of association of Pb^<++> with a cation vacancy is ∼0.28 eV. The growth rate of F-centers in X-irradiated crystals is found to be slower in all lead doped crystals. On additive or electrolytic coloration the lead band (characterised as the A band) disappears and an intense broad (half-width 2.5 eV) ultraviolet band, besides the F band, is observed. Quenching from temperatures greater than 500℃ bleaches the F band and the UV band and a new band peaking at 240-265 nm with half-width 1.4∼1.5 eV is observed in four alkali halides. Preliminary EPR measurements did not show any influence of the lead bands on the EPR results.

• 社団法人日本物理学会の論文
• 1969-11-05

著者

• Jain S.

  Solid State Physics Division Indian Institute Of Technology:solid State Physics Laboratory

• SAI K.

  Solid State Physics Laboratory, Lucknow Road

• RADHAKRSISHNA S.

  Solid State Physics Division, Indian Institute of Technology

• Radhakrsishna S.

  Solid State Physics Division Indian Institute Of Technology

• Sai K.

  Solid State Physics Division Indian Institute Of Technology

• Jain S.C.

  Solid State Physics Division, Indian Institute of Technology

関連論文

• Pb^+, Pb° and Pb Colloid Bands in KCl Crystals
• Photoconductivity of Potassium Colloids in KBr Crystals
• Optical and Electrical Properties of Uncolored and Colored Lead Doped Alkali Halides

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