Bandgap engineering of colloidal zinc oxysulfide via lattice substitution with sulfur

Nanoscale
Shiv K PandeyAvinash C Pandey

Abstract

Zinc oxysulfide nanocrystals with zinc blende phase are synthesized through a wet-chemical method. An affirmation of the crystal structure, elemental homogeneity and phase transformation is obtained by X-ray diffraction and authenticated by electron micrographic studies. Theoretical observations have strongly supported the thermodynamic solubility limit for its (30%) formation. An anomalous bandgap bowing with modulation in bandgap from 3.74 eV (ZnO) to 3.93 eV (ZnS) was observed with a minimum bandgap of 2.7 eV. Tunable bandgap and a wide range of visible emission ascertain it as a potential material for optoelectronic and solar cell applications due to its large bandgap offsets.

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Citations

Jan 21, 2019·The Journal of Chemical Physics·Xi Xu, Hong Jiang
Apr 17, 2020·Frontiers in Chemistry·Clément Larquet, Sophie Carenco
Sep 29, 2017·Physical Chemistry Chemical Physics : PCCP·Huiyun ZhangQingyu Xu

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