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Polymorphism, optical and photoelectrical properties of lead monoxide thin single crystals
Author(s) -
Bordovskij G. A.,
Izvozčikov V. A.
Publication year - 1968
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19680030208
Subject(s) - orthorhombic crystal system , tetragonal crystal system , monoxide , photoelectric effect , crystallography , absorption (acoustics) , chemistry , physics , materials science , crystal structure , optics , inorganic chemistry
The optical and photoelectric properties of the hybridal polymorphic lead monoxide single crystals have been studied. The crystals core is of orthorhombic structure, and tetragonal monoxide is present in the surface layer. The spontaneous and artificial enantiotrophical transformation of orthorhombic to hybridal single crystals results in: 1) appearing of additional absorption band; 2) activation of photoelectric sensity \documentclass{article}\pagestyle{empty}\begin{document}$ \left({\frac{{\Delta I}}{{I_D }} \approx 10^5 {\raise0.7ex\hbox{${\rm o}$} \!\mathord{\left/ {\vphantom {{\rm o} {\rm o}}}\right.\kern-\nulldelimiterspace} \!\lower0.7ex\hbox{${\rm o}$}}} \right) $\end{document} ; 3) the spectral response shows the form characteristic for the case of high surface recombination velocity with maximum photocurrent about ∼615 nm. The activation of the photoelectric sensity is explained by the formation of the tetragonal (red) monoxide.