Alloyed Crystalline CdSe1-xSx Semiconductive Nanomaterials - A Solid State 113Cd NMR Study

Baoyan Xing; Sai Ge; Jianguo Zhao; Hui Yang; Jie Song; Yu Geng; Yuying Qiao; Ling Gu; Peide Han; Guibin Ma

doi:10.1002/open.202000216

Alloyed Crystalline CdSe_1-xS_x Semiconductive Nanomaterials - A Solid State ¹¹³Cd NMR Study

ChemistryOpen. 2020 Oct 12;9(10):1018-1026. doi: 10.1002/open.202000216. eCollection 2020 Oct.

Authors

Baoyan Xing^{1

2}, Sai Ge², Jianguo Zhao^{1

2}, Hui Yang², Jie Song², Yu Geng², Yuying Qiao², Ling Gu², Peide Han¹, Guibin Ma²

Affiliations

¹ College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
² Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China.

Abstract

Solid-state NMR analysis on wurtzite alloyed CdSe_1-xS_x crystalline nanoparticles and nanobelts provides evidence that the ¹¹³Cd NMR chemical shift is not affected by the varying sizes of nanoparticles, but is sensitive to the S/Se anion molar ratios. A linear correlation is observed between ¹¹³Cd NMR chemical shifts and the sulfur component for the alloyed CdSe_1-xS_x (0<x<1) system both in nanoparticles and nanobelts (δ_Cd=169.71⋅X_S+529.21). Based on this correlation, a rapid and applied approach has been developed to determine the composition of the alloyed nanoscalar materials utilizing ¹¹³Cd NMR spectroscopy. The observed results from this system confirm that one can use ¹¹³Cd NMR spectroscopy not only to determine the composition but also the phase separation of nanomaterial semiconductors without destruction of the sample structures. In addition, some observed correlations are discussed in detail.

Keywords: Nanoparticles; crystalline materials; semiconductive nanoparticles; solid state NMR..

Publication types

Research Support, Non-U.S. Gov't