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  Luminescence of defect centres in Hg2Cl2

Bryknar, Z., Peka, P., Konṋáková, A., Král, J., & Schulz, H.-J. (1995). Luminescence of defect centres in Hg2Cl2. Radiation Effects and Defects in Solids, 134(1-4), 447-451. doi:10.1080/10420159508227266.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0009-563E-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0009-563F-1
Genre: Journal Article

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Bryknar, Z.1, Author
Peka, Pavel2, Author           
Konṋáková, A.1, Author
Král, J.1, Author
Schulz, Hans-Joachim3, Author           
Affiliations:
1Czech Technical University in Prague, Czech Republik, ou_persistent22              
2Fritz Haber Institute, Max Planck Society, ou_24021              
3Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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 Abstract: Luminescence in Hg2Cl2, crystals excited with UV light is investigated in the spectral region 0.8–2.25 eV. Measurements are performed on as-grown samples and on samples previously exposed to UV light at RT. Six emission bands are found which depend on the concentration of the photochemical entities produced by irradiation of the crystals at RT. It is concluded that infra-red (IR) luminescence of Hg2Cl2 originates from crystal defects. The observed emission bands are tentatively attributed to the emission of (HgCIxBr3−x)− and (HgClxBr4−x)2− complexes formed with residual Br impurities. Centres responsible for IR Hg2Cl2 emissions are excited: (i) via excitons of Hg2Cl2, (ii) via excited states of isolated Hg2Br2 molecules, and (iii) resonantly through the excitation bands of defect centres.

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Language(s): eng - English
 Dates: 1995
 Publication Status: Issued
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1080/10420159508227266
 Degree: -

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Title: Radiation Effects and Defects in Solids
  Other : Radiat. Eff. Defects Solids
Source Genre: Journal
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Publ. Info: New York : Gordon & Breach
Pages: 5 Volume / Issue: 134 (1-4) Sequence Number: - Start / End Page: 447 - 451 Identifier: ISSN: 1042-0150
CoNE: https://pure.mpg.de/cone/journals/resource/954928507607