Lọc theo danh mục
  • Năm xuất bản
    Xem thêm
  • Lĩnh vực
liên kết website
Lượt truy cập
 Lượt truy cập :  31,549,801
  • Công bố khoa học và công nghệ Việt Nam

31.19

Hoá học

Tổng hợp và đặc tính hóa của các vật liệu nano SnS có hình thái khác nhau

Synthesis and characterization of different morphological SnS nanomaterials

Nanoscience and Nanotechnology

2014

4

1-9

2043-6262

SnS in three nano fonns possessing different morphologies such as particles, whiskers and ribbons were synthesised by chemical route. The morphology variation was brought about in the chemical route synthesis by varying a synthesis parameter such as temperature and influencing the synthesis by use of surfactant. The elemental composition determination by energy dispersive analysis of x-rays (EDAX) showed that all three synthesized SnS nanomaterials were tin deficient. The x-ray diffraction (XRD) study of the three SnS nanomaterials showed that all of them possess orthorhombic structure. The Raman spectra of the three SnS nanomaterials showed that all three samples possess three common distinguishable peaks. In them two peaks lying at 98 +/- 1 cm -I and 224 +/- 4 cm -1 are the characteristic Ag mode of SnS. The third peak lying at 302 +/- 1 cm-1 is associated with secondary Sn2S3 phase. The transmission electron microscopy (TEM) confinned the respective morphologies. The optical analysis showed that they possess direct as well as indirect optical bandgap. The electrical transport properties study on the pellets prepared from the different nanomaterials of SnS showed them to be semiconducting and p-type in nature. The current-voltage (I-V) plots of the silver (Ag)/SnS nanomaterials pellets for dark and incandescent illumination showed that all configurations showed good ohmic behaviour except Ag/SnS nanoribbons pellet configuration under illumination. All the obtained results are discussed in detail.

TTKHCNQG, CLt 740