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Proceedings Paper

Investigation of photolysis and photochemical transformations in metal layer halides with optical methods
Author(s): Vyacheslav V. Bondar; Arkady Groodzinsky; Stepan Popovych; Yaroslav Pastyrsky; Olena V. Savchuk
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Paper Abstract

In the present work processes of photolysis and photochemical transformations in crystals, thin films, and heterogeneous environments of layer cadmium, lead, and zinc halides have been investigated. It has been found that photolysis takes place in these materials at excitation of electron-hole couples. Excessive metal atoms serve as photodecay centers. Photolysis kinetics are determined by halogen diffusion. Products of photolysis are metallic and partly oxide phases. The maximal photolysis degree is determined by the critical size of metallic inclusions. It has been shown that copper impurity leads to photochemical reactions (PCR) in cadmium halides. PCR in CdI2 - Cu crystals is caused by photothermal decay of copper- intrinsic defect complexes. In CdBr2 - Cu PCR takes place as a result of copper impurity photoionization, and in CdCl2 - Cu it is a result of recharging Cu+ yields Cu2+.

Paper Details

Date Published: 3 November 1995
PDF: 5 pages
Proc. SPIE 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (3 November 1995); doi: 10.1117/12.226163
Show Author Affiliations
Vyacheslav V. Bondar, Lviv State Univ. (Ukraine)
Arkady Groodzinsky, Lviv State Univ. (Ukraine)
Stepan Popovych, Lviv State Univ. (Ukraine)
Yaroslav Pastyrsky, Lviv State Univ. (Ukraine)
Olena V. Savchuk, Lviv State Univ. (Ukraine)


Published in SPIE Proceedings Vol. 2648:
International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics
Sergey V. Svechnikov; Mikhail Ya. Valakh, Editor(s)

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