Surfactant assisted synthesis of nanocrystalline n-Bi2Se3 thin films at room temperature via arrested precipitation technique
https://doi.org/10.17586/2220-8054-2016-7-4-765-767
Abstract
In the present investigation, we have successfully synthesized nanocrystalline bismuth selenide (Bi2Se3) thin films using an arrested precipitation technique at room temperature. The optostructural, morphological, compositional and photoeletrochemical properties were studied for Bi2Se3 thin films prepared via surfactant-assisted synthesis. The optical study reveals the presence of direct allowed transition with band gap energy ranging from 1.40–1.80 eV. The X-ray diffraction (XRD) pattern confirms rhombohedral crystal structure. Scanning electron microscopy study shows the morphological transition from an interconnected mesh to nanosphere-like morphology and finally, lamellar sphere. Atomic force microscopy (AFM) study carried out to determine surface roughness and surface topography of thin films. Energy dispersive spectroscopy (EDS) analysis reveals the presence and ratio of elemental bismuth and selenium. Finally, the photoelectrochemical (PEC) performance of all the as-synthesized thin films were carried out using iodide-polyiodide redox couple.
About the Authors
N. D. Desai
Shivaji University
India
India
Materials Research Laboratory, Department of Chemistry
Kolhapur–416004
S. M. Patil
Shivaji University
India
India
Materials Research Laboratory, Department of Chemistry
Kolhapur–416004
K. V. Khot
Shivaji University
India
India
Materials Research Laboratory, Department of Chemistry
Kolhapur–416004
R. M. Mane
Shivaji University
India
India
Materials Research Laboratory, Department of Chemistry
Kolhapur–416004
P. N. Bhosale
Shivaji University
India
India
Materials Research Laboratory, Department of Chemistry
Kolhapur–416004
References
1. Osterloh F.E. Inorganic nanostructures for photoelectrochemical and photocatalytic water splitting. Chem. Soc. Rev., 2013, 42, P. 2294– 2320.
2. Yang J., Li Y., Liu F., Jiang L., Ye J., Liu Y. The electrochemical self assembly of hierarchical dendritic Bi2Se3 nanostructures. Cryst. Eng. Comm., 2014, 16, P. 2823–2834.
3. Jagminas A., Valiunas I., Vernese G.P., Juskenas R., Rutavicius A. Alumina template assisted growth of bismuth selenide nanowire arrays. J. Cryst. Growth, 2008, 310, P. 428–433.
4. Xiao F., Hangarter C., Yoo B., Rheem Y., Lee K., Myung N.V. Recent progress in electrodeposition of thermoelectric thin films and nanostructures. Electrochim. Acta, 2008, 53, P. 8103–8117.
5. Xiao C., Li Z., Li K., Huang P., Xie Y. Decoupling Interrelated Parameters for Designing High Performance Thermoelectric Materials. cc. Chem. Res., 2014, 47, P. 1287–1295.
6. Ko J., Kim J., Choi S., Lim Y., Seo W., Lee K. Nanograined thermoelectric Bi2Te2.7Se0.3 with ultralow phonon transport prepared from chemically exfoliated nanoplatelets. J. Mater. Chem., 2013, 1, P. 12791–12796.
7. Borisova S., Krumrain J., Luysberg M., Mussler G., Gruitzmacher D. Mode of Growth of Ultrathin Topological Insulator Bi2Te3 Films on Si (111) Substrates. Cryst. Growth Des. 2012, 12, P. 6098–6103.
Review
For citations:
Desai N.D., Patil S.M., Khot K.V., Mane R.M., Bhosale P.N. Surfactant assisted synthesis of nanocrystalline n-Bi2Se3 thin films at room temperature via arrested precipitation technique. Nanosystems: Physics, Chemistry, Mathematics. 2016;7(4):765-767. https://doi.org/10.17586/2220-8054-2016-7-4-765-767
Views:
16
Email this article 