Bandgap engineering of colloidal zinc oxysulfide via lattice substitution with sulfur

被引：36
作者：
Pandey, Shiv K. [1 ,2 ]
Pandey, Shipra [2 ]
Parashar, Vyom [2 ,3 ]
Yadav, Raghvendra S. [2 ]
Mehrotra, G. K. [1 ]
Pandey, Avinash C. [2 ]
机构：
[1] MN Natl Inst Technol, Dept Chem, Allahabad, Uttar Pradesh, India
[2] Univ Allahabad, Nanotechnol Applicat Ctr, Allahabad 211002, Uttar Pradesh, India
[3] Univ Johannesburg, Dept Appl Chem, Johannesburg, South Africa
来源：
NANOSCALE | 2014年 / 6卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
NANOCRYSTALS; FILMS; ZNO; LUMINESCENCE; ALLOYS;
D O I：
10.1039/c3nr04457b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：1602 / 1606
页数：5
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