Study of ion diffusion in superionic crystals by EPMA and local CL

In this work the effect of ionic diffusion was studied in crystals AgI, HgI 2 and heterostructure Ag 2Hg 4I, obtained by a solid state chemical reaction (SSCR). The main aim was to characterize the structure of AgI–Ag 2HgI 4–HgI 2 p–n heterojunction and study the influence of a high power density el...

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Bibliographic Details
Published inSuperlattices and microstructures Vol. 45; no. 4; pp. 369 - 375
Main Authors Kolesnikova, Ekaterina V., Akopyan, Irina Kh, Domracheva, Yana V., Novikov, Boris V., Tsagan-Mandjieva, Danara A., Zamoryanskaya, Marya V.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.04.2009
Subjects
Cathodoluminescence
EPMA
Ionic diffusion
Superionic crystal
Cathodoluminescence
Ionic diffusion
Superionic crystal
EPMA
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Summary:In this work the effect of ionic diffusion was studied in crystals AgI, HgI 2 and heterostructure Ag 2Hg 4I, obtained by a solid state chemical reaction (SSCR). The main aim was to characterize the structure of AgI–Ag 2HgI 4–HgI 2 p–n heterojunction and study the influence of a high power density electron beam on the ionic diffusion rate in this system. All structures were examined by electron probe microanalysis (EPMA) and local cathodoluminescence (CL). Dependence of elemental distribution and CL spectra on the p–n junction distance was revealed. Diffusion of Ag + ions was observed both in AgI crystals and through the interface of Ag 2HgI 4–HgI 2 in HgI 2 crystals.
ISSN:0749-6036
1096-3677
DOI:10.1016/j.spmi.2009.01.009