Determination of Bond Lengths and Electronic Structure of Cd_1-xZn_xTe Ternary Alloys by Synchrotron Radiation

Abstract

High-resolution synchrotron radiation x-ray absorption spectroscopy on Zn K-, Cd L3- and Te L3-edges for Cd1-xZnxTe ternary alloys with x = 0.10, 0.30, 0.50 and 0.90 are presented. A detailed analysis of the extended x-ray absorption fine structure using the IFEFFIT program, and the chemical bonds of Zn-Te are obtained, suggesting distortion of the Te sub-lattice. The x-ray absorption near-edge structure of the Zn K-, Cd L3- and Te L3-edge are investigated, and the electronic structures of Cd1-xZnxTe with various compositions are studied.

The structure-dependent quantum yield of ZnCdS nanocrystals

“…4(b) is ascribed to the transitions of Cd 1s to 5p states. 38 Herein, the white-line (WL) intensity is an indication of the oxidation level of Zn and Cd atoms, which can be caused by the charge donation from Zn and Cd to their neighbouring atoms. On the other hand, the energy shift of the WL in Zn and Cd K-edge is believed to be related to the change in the bond lengths of Zn x NCs at different Zn compositions.…”