Synthesis and Characterization of Tungsten Diselenide Single Crystals

Authors(1) :-D. K. Patel

The semiconducting compound tungsten diselenide (WSe2) possess interesting electrical properties and has been the subject of numerous investigation.it is used as photovoltaic/photo catalytic solar energy converter. The development of photo based material was simulated largely by the need for working out a photo electrochemical (PEC) solar energy conversion method as a new ecologically clean and inexhaustible source of energy. In the most promising variant method of converting solar energy in to electrical energy using solar cells (PEC) with semiconductor electrode. Single crystals of tungsten diselenide (WSe2) emerged as a most efficient photo electrode material used in the PEC solar cells have been grown by using Direct vapors transport technique (DVT). The electrical properties of W0.90Se2 single crystal are studied and resistivity through vander-Pauw method in the High temperature range (313K 388K) is obtained. The vander-Pauw technique is also used to evaluate the type, mobility and carrier concentration of W0.90Se2 the single crystals of photovoltaic cells.

Authors and Affiliations

D. K. Patel
Physics Department, C. U .Shah Science College, Ahmadabad, Gujarat, India

Dichalcogenides, Decompose, Non-Stoichiometry, Semiconductor, Resistivity

  1. Buckley, H. F., (1951). Crystal growth (Book), published by John Wiley & Sons, New York.
  2. Lawson,W.D., & Nielson, S. (1958). Preparation of single crystals. Butter worth Scientific Publ. London.
  3. Perker, R. L., (1970), “Crystal Growth Mechanisms: Energetic, Kinetics, Transport,” Solid state physics 25: 151-299 edited by Ehrenreich, H., Seitz, F., Turnbull, D., (Academic press, New york 1970) ISBN: 978-0-12-607725-4
  4. Ouadah, A. Pouzet, J. and Bernede, J.C., (1993) Obtention de couches minces texturees de Mose2 a partir de feuillets de Mo et de Te, Journal de Physique III France, 3 : 1-12.
  5. Salvador, P. Chaparro, A.M., and Mir, A. (1996) Digital Imaging of the Effect of Photoetching on the Photoresponse of n-Type Tungsten Diselenide and Molybdenum Diselenide Single Crystal Electrodes. The Journal of Physical Chemistry., 100 (2): 760768
  6. Prasad, G. and Srivastava, O.N., (1988) The high-efficiency (17.1%) WSe2 photo-electrochemical solar cell. Journal of Physics D: Applied Physics., 21(6):1028
  7. Campet,G. Azaiez,C. Levy,F. Bourezc, H. and Claverie, J. (1988). A 22% Efficient Semiconductor /Liquid Junction Solar Cell-the Photo electrochemical Behavior of n-Wse2 Electrodes in the Presence of I2/I-in Aqueous Electrolyte Active and Passive Electronic Components. 13(1): 33-43
  8. Molenda, J. and Bak, T. (1993) Electronic and Electrochemical Properties of nonstoichiometric tungsten. Diselenide. Physica Status Solidi (b), 178(1): 205-214.

Publication Details

Published in : Volume 2 | Issue 6 | November-December 2016
Date of Publication : 2016-12-30
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 762-765
Manuscript Number : IJSRSET1738142
Publisher : Technoscience Academy

Print ISSN : 2395-1990, Online ISSN : 2394-4099

Cite This Article :

D. K. Patel, " Synthesis and Characterization of Tungsten Diselenide Single Crystals, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 2, Issue 6, pp.762-765, November-December-2016.
Journal URL : http://ijsrset.com/IJSRSET1738142

Follow Us

Contact Us