Structural characterization and physical properties of the new transition metal oxyselenide La2O2ZnSe2.
The quaternary transition metal oxyselenide La(2)O(2)ZnSe(2) has been shown to adopt a ZrCuSiAs-related structure with Zn(2+) cations in a new ordered arrangement within the [ZnSe(2)](2-) layers. This cation-ordered structure can be derived and described using the symmetry-adapted distortion mode approach. La(2)O(2)ZnSe(2) is an direct gap semiconductor with an experimental optical band gap of 3.4(2) eV, consistent with electronic structure calculations.
Department of Chemistry, University Science Site, Durham University, South Road, Durham, DH1 3LE, United Kingdom.
Andrew J
AJ
Tuxworth
Emma E
EE
McCabe
David G
DG
Free
Stewart J
SJ
Clark
John S O
JS
Evans