Effect of pH on the structural and optical properties of ZnS nanoparticles embedded in PVA matrix

被引：0
|
作者：
Shayesteh, S. Farjami [1 ]
Kolahi, S. [1 ]
Azizian-Kalandarragh, Y. [2 ]
机构：
[1] Univ Guilan, Dept Phys, Rasht, Iran
[2] Univ Mohaghegh Ardabili, Dept Phys, Ardebil, Iran
来源：
INDIAN JOURNAL OF PURE & APPLIED PHYSICS | 2013年 / 51卷 / 11期
关键词：
ZnS nanoparticle; PVA matrix; Structural properties; Optical properties; NANOCRYSTALS; FILMS;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
ZnS nanoparticles embedded in polyvinyl alcohol (PVA) matrix have been synthesised with different pH by using wet chemical methods at room temperature. X-ray diffraction (XRD) pattern indicated that prepared nanoparticles with different pH show cubic phase. The average size variation of nanoparticles with pH estimated from the Debye-Scherrer equation and varying optical size by using absorption edge. Also, UV-Vis absorption results show a blue shift by variation of pH. The intensity of PL emission was found to be dependent on the pH of precursors and maximum of intensity related to pH=6. As a conclusion, pH plays vital role in improving PL intensity. It is also observed that particle size depends on the pH and a decrease in the size of particles is observed with the decrease of pH.
引用
收藏
页码：780 / 783
页数：4
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