Synthesis of MoS2/MoO3 compound thin films using spray pyrolysis technique and investigation on annealing treatment effect on their physical properties

Document Type : Full length research Paper

Authors

1 Faculty of physics, University of Damghan, Damghan, Iran

2 Faculty memeber of Damghan University

Abstract

In this research the effect of substrate temperature and also annealing treatment at sulfur atmosphere on structural, surface morphological, optical, electrical and thermoelectrical properties of molybdenum trioxide/molybdenum disulfide (MoS2/MoO3) compound thin films were studied. The XRD patterns analysis indicated the formation of crystallite structure with two MoO3 orthorhombic and MoS2 hexagonal phases. After sulfurization process, the peaks of oxide phase disappeared and MoS2 single phase structure formed. FESEM images indicated surfaces that was coated uniformly with spherical shaped particles. All samples had an absorption coefficient about 104 cm-1 and their band gap energy after sulfurization significantly reduces in average from 2.60 to 1.55 eV. Hall effect data showed that MoS2 thin films had hole conduction type (in agreement to trend of variation of Seebeck coefficient) and also hole density in order of 1015 cm-3.

Keywords

References

[1] S. Balakumar, R. Ajay Rakkesh, A.K. Prasad, S. Dash, A.K. Tyagi, Nanoplatelet structures of MoO3 for H2 gas sensors, IEEE 978 (2011) 514-517.
[2] M. Bernardi, M. Palummo, J.C. Grossman, Extraordinary sunlight absorption and one nanometer thick photovoltaics using two-dimensional monolayer materials, Nano Letters 13 (2013)3664-3670.
[3] H.M. Martinez, J. Torres, L.D. López-Carreño, M.E. Rodríguez-Garcia, The Effect of Substrate Temperature on the Optical Properties of MoO3 Nano-crystals Prepared Using Spray Pyrolysis, Journal of Superconductivity and Novel Magnetism 26 (2013) 2485-2488.            
[4] M.B. Rahmani, S.H. Keshmiri, J. Yu, A.Z. Sadek, L. Al-Mashat, A. Moafi, K. Latham, Y.X. Li ,W. Wlodarski, K. Kalantar-zadeh, Gas sensing properties of thermally evaporated lamellar MoO3, Sensors and Actuators B 145 (2010) 13–19.
[5] S.B. Patil, S.R. Mane, V.R. Patil, R.R. Kharade, P.N. Bhosale, Chemo synthesis and characterization of electrochromic vanadium doped molybdenum oxide thin films, Applied Science Research 3 3 (2011) 481-491. 
[6] K.L. Choy, Chemical vapour deposition of coatings, Progress in Materials Science 48(2003) 57–170.
[7] P. Roy, S.K. Srivastava, Chemical bath deposition of MoS2 thin film using ammonium tetra thimolybdate as a single source for molybdenum and Sulphur, Thin Solid Films 496 (2006) 293 –298.
[8] A.R. Lansdown, Molybdenum disulphide lubrication, Elsevier Science, (1999).
[9] T. Hao, controllable growth of monolayer molybdenum disulphide, 2d hybrid nano materials, National University of Singapore, (2014).
[10] J. Tauc, Amorphous and Liquid Semi- conductors, Plenum, London, (1974).
[11] F.M. Smits, Measurement of Sheet Resistivity with the Four-Point Probe, Bell System Technical Journal 37 (1958) 711-718.
[12] L.J. Van der Pauw, A method of measuring speciļ¬c 9qu resistivity and Hall effect of discs of arbitrary shape, Philips Research Reports 13 (1958)1-9.
[13] S.C. Ray, Structure and optical properties of molybdenum disulphide (MoS2) thin film deposited by the dip technique, Journal of Materials Science Letters 19 (2000) 803– 804.
[14] E.A. Ponomarev, M. Neumann-Spallart, G. Hodes, C. Lévy-Clément, Electro-chemical deposition of  MoS2 thin films by reduction of tetrathiomolybdate, Thin Solid Films 280 (1996) 86-89.
[15] A. Abinaya, B.G. Jeyaprakash, characterization of spray deposited nano structured MoS2 thin films, Research Journal of Pharmaceutical, Biological and Chemical Sciences 5 4 (2014) 464-469.
[16] R.S. Patil, Electro synthesis of the Molybdenum disulphide Thin Films and Characterization, Thin Solid Films 340 (1999) 11-12.
[17] S.D. Sartale, C.D. Lokhande, Studies on large area (∼50 cm2) MoS2 thin films deposited using successive ionic layer adsorption and reaction (SILAR) method, Materials Chemistry and Physics 71 (2001) 94–97.
[18] M.M. Bagheri-Mohagheghi, N. Shahtahmasebi, M.R. Alinejad, A. Youssefi, M. Shokooh-Saremi, Fe-doped SnO2 transparent semi-conducting thin films deposited by spray pyrolysis technique: Thermoelectric and p-type conductivity properties, Solid State Science 11 (2009) 233-239. 
Journal of Research on Many-body Systems
Volume 7, Issue 15
December 2017
Pages 45-56

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History

  • Receive Date: 23 October 2016
  • Revise Date: 14 June 2017
  • Accept Date: 21 June 2017

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