Spectroscopic and luminescent properties of Co<sup>2+</sup> doped tin oxide thin films by spray pyrolysis

K. Ravindranadh; K. Durga Venkata Prasad; M.C. Rao; K. Ravindranadh; K. Durga Venkata Prasad; M.C. Rao

doi:10.3934/matersci.2016.3.796

AIMS Materials Science

2016, Volume 3, Issue 3: 796-807. doi: 10.3934/matersci.2016.3.796

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Research article Topical Sections

Spectroscopic and luminescent properties of Co²⁺ doped tin oxide thin films by spray pyrolysis

1.
Physics Division, Department of Basic Sciences & Humanities, Chirala Engineering College, Chirala-523 157, India;
2.
Department of Physics, Andhra Loyola College, Vijayawada - 520 008, India

Received: 04 June 2016 Accepted: 30 June 2016 Published: 04 July 2016

The wide variety of electronic and chemical properties of metal oxides makes them exciting materials for basic research and for technological applications alike. Oxides span a wide range of electrical properties from wide band-gap insulators to metallic and superconducting. Tin oxide belongs to a class of materials called Transparent Conducting Oxides (TCO) which constitutes an important component for optoelectronic applications. Co²⁺ doped tin oxide thin films were prepared by chemical spray pyrolysis synthesis and characterized by powder X-ray diffraction, SEM, TEM, FT-IR, optical, EPR and PL techniques to collect the information about the crystal structure, coordination/local site symmetry of doped Co²⁺ ions in the host lattice and the luminescent properties of the prepared sample. Powder XRD data revealed that the crystal structure belongs to tetragonal rutile phase and its lattice cell parameters are evaluated. The average crystallite size was estimated to be 26 nm. The morphology of prepared sample was analyzed by using SEM and TEM studies. Functional groups of the prepared sample were observed in the FT-IR spectrum. Optical absorption and EPR studies have shown that on doping, Co²⁺ ions enter in the host lattice as octahedral site symmetry. PL studies of Co²⁺ doped SnO₂ thin films exhibit blue and yellow emission bands. CIE chromaticity coordinates were also calculated from emission spectrum of Co²⁺ doped SnO₂ thin films.
- SnO₂,
- spray pyrolysis,
- copper ions,
- TEM,
- optical absorption,
- EPR,
- photoluminescence
Citation: K. Ravindranadh, K. Durga Venkata Prasad, M.C. Rao. Spectroscopic and luminescent properties of Co2+ doped tin oxide thin films by spray pyrolysis[J]. AIMS Materials Science, 2016, 3(3): 796-807. doi: 10.3934/matersci.2016.3.796

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Abstract

The wide variety of electronic and chemical properties of metal oxides makes them exciting materials for basic research and for technological applications alike. Oxides span a wide range of electrical properties from wide band-gap insulators to metallic and superconducting. Tin oxide belongs to a class of materials called Transparent Conducting Oxides (TCO) which constitutes an important component for optoelectronic applications. Co²⁺ doped tin oxide thin films were prepared by chemical spray pyrolysis synthesis and characterized by powder X-ray diffraction, SEM, TEM, FT-IR, optical, EPR and PL techniques to collect the information about the crystal structure, coordination/local site symmetry of doped Co²⁺ ions in the host lattice and the luminescent properties of the prepared sample. Powder XRD data revealed that the crystal structure belongs to tetragonal rutile phase and its lattice cell parameters are evaluated. The average crystallite size was estimated to be 26 nm. The morphology of prepared sample was analyzed by using SEM and TEM studies. Functional groups of the prepared sample were observed in the FT-IR spectrum. Optical absorption and EPR studies have shown that on doping, Co²⁺ ions enter in the host lattice as octahedral site symmetry. PL studies of Co²⁺ doped SnO₂ thin films exhibit blue and yellow emission bands. CIE chromaticity coordinates were also calculated from emission spectrum of Co²⁺ doped SnO₂ thin films.

References

[1]	Rao MC, Ravindranadh K, Shekhawat MS (2016) Structural and Electrical Properties of TiO₂ Thin films. AIP Conf Proc 1728: 020077. doi: 10.1063/1.4946128
[2]	Rao MC, Ravindranadh K, Kasturi A, et al. (2013)Structural Stoichiometry and Phase Transitions of MoO₃ Thin Films for Solid State Microbatteries. Res J Rec Sci 2: 67-73.
[3]	Granqvist CG (2007) Transparent conductors as solar energy materials: A panoramic review. Sol Ener MaterSol Cells 91: 1529-1598. doi: 10.1016/j.solmat.2007.04.031
[4]	Exarhos GJ, Zhou XD (2007) Discovery-based design of transparent conducting oxide films. Thin Solid Films 515: 7025-7052. doi: 10.1016/j.tsf.2007.03.014
[5]	Malato S, Fernández-Ibanez P, Maldonado MI, et al. (2009) Decontamination and disinfection of water by solar photocatalysis: recent overview and trends. Catal Today 147: 1-59. doi: 10.1016/j.cattod.2009.06.018
[6]	Li B, Wang LD, Kang BN, et al. (2006) Review of recent progress in solid-state dye-sensitized solar cells. Sol Ener Mater Sol Cells 90: 549-573. doi: 10.1016/j.solmat.2005.04.039
[7]	Wager JF (2003) Transparent electronics. Science 300: 1245-1246. doi: 10.1126/science.1085276
[8]	Rao MC, Hussain OM (2010) Synthesis and electrochemical properties of Ti doped LiCoO₂ thin film cathodes. J Alloys Comp 491: 503-506. doi: 10.1016/j.jallcom.2009.10.246
[9]	Rao MC (2011) Fabrication of LiCoO₂, LiTi_xCo_1-xO₂ and LiNi_xCo_1-xO₂ thin film cells for rechargeable lithium microbatteries. Optoelect Adv Mater (Rapid Commu) 5: 85-88.
[10]	Rao MC (2010) Growth and microstructural features of laser ablated LiCoO₂ thin films. J Crys Growth 312: 2799-2803. doi: 10.1016/j.jcrysgro.2010.06.012
[11]	Rao MC, Hussain OM (2009) Optical and electrical properties of laser ablated amorphous LiCoO₂ thin film cathodes. IOP Conf Series Mater Sci Eng 2: 012037.
[12]	Rao MC, Hussain OM (2009) Spectroscopic investigations on tetravalent doped LiCoO₂ thin film cathodes. Eur Phys J Appl Phys 48: 20503.
[13]	Rao MC, Hussain OM (2011) Optical and electrical properties of LiNi_xCo_1-xO₂ thin films. Optoelect Adv Mater 13: 1109-1113.
[14]	Rao MC (2012) Microfabrication of LiCoO₂ thin film cell. Int J Chem Sci 10: 1111-1116.
[15]	Rao MC (2012) Effect of target composition on the growth of stiochiometric LiCoO₂, LiTi_xCo_1-xO₂ and LiNi_xCo_1-xO₂ thin films. Optoelect Adv Mater (Rapid Commu) 5: 651-654.
[16]	Rao MC (2011) Grain size effect on the growth of LiCoO₂ thin film cathodes. J Optoelect Adv Mater 13: 428-431.
[17]	Rao MC (2012) Synthesis and characterization of LiCoO₂ thin film cathodes grown by pulsed laser deposition. Optoelect Adv Mater (Rapid Commu) 6: 511-515.
[18]	Rao MC (2011) Spectroscopic investigations on laser ablated LiNi_xCo_1-xO₂ thin films. J Optoelect Adv Mater 13: 78-81.
[19]	Muntaz Begum Sk, Rao MC, Ravikumar RVSSN (2013) Cu²⁺ doped PVA passivated ZnSe nanoparticles - preparation, characterization and properties. J Inorg Organometa Poly Mater 23: 350-356. doi: 10.1007/s10904-012-9783-8
[20]	Muntaz Begum Sk, Rao MC, Ravikumar RVSSN (2011) Physical and spectral investigations of Mn²⁺ ions doped poly vinyl alcohol capped ZnSe nanoparticles. J Mol Struct 1006: 344-347. doi: 10.1016/j.molstruc.2011.09.030
[21]	Muntaz Begum Sk, Rao MC, Ravikumar RVSSN (2012) Spectroscopic investigations of Fe³⁺ doped poly vinyl alcohol (PVA) capped ZnSe nanoparticles. Spectrochim Acta A 98: 100-104. doi: 10.1016/j.saa.2012.08.031
[22]	Ravindranadh K, Rao MC, Ravikumar RVSSN (2015) EPR and optical studies of Fe³⁺ doped Ca-Li hydroxyapatite nanopowder- mechanochemical synthesis. Appl Mag Reson 46: 1-15. doi: 10.1007/s00723-014-0613-8
[23]	Ravindranadh K, Rao MC, Ravikumar RVSSN (2015) Optical and structural properties of undoped and Mn²⁺ doped Ca-Li hydroxyapatite nanopowders using mechanochemical synthesis. J Luminesce 159: 119-127. doi: 10.1016/j.jlumin.2014.10.039
[24]	Hoffman RL, Norris BJ, Wager JF (2003) ZnO-based transparent thin-film transistors. Appl Phys Lett 82: 733-735. doi: 10.1063/1.1542677
[25]	Rao MC, Ravindranadh K, Satyanarayana T, et al. (2016) Luminescent and Gas Sensing Properties of SnO₂ Thin Films Grown by Pulsed Laser Deposition. Der Phar Chem 8: 243-250.
[26]	Henderson B, Imbush GG (1989) Optical Spectroscopy of Inorganic Solids, Clarendon Press, Oxford.
[27]	Ravindranadh K, Babu B, Jaesool Shim, et al. (2015) Structural and Photoluminescence Studies of Co²⁺ doped Ca-Li Hydroxyapatite Nanopowders. J Mater Sci Mater Elec 26: 6667-6675. doi: 10.1007/s10854-015-3268-9
[28]	Shinde SD, Patil GE, Kajale DD, et al. (2012) synthesis of ZnO nano rods for spay pyrolysis for H2S gas sensor.J Alloys Compd 528: 109-114. doi: 10.1016/j.jallcom.2012.03.020
[29]	Cobianu C, Savaniu C, Siciliano P, et al. (2001) SnO₂ sol-gel derived thin films for integrated gas sensors. Sens Actuators B77: 496-502.
[30]	Larciprete R,Borsella E, De Padova P, et al. (1998)Organotin films deposited by laser-induced CVD as active layers in chemical sensors. Thin Solid Films 323: 291-295.
[31]	Sberveglieri G, Faglia G, Groppelli S, et al. (1992) Methods for the preparation of NO, NO₂ and H₂ sensors based on tin oxide thin films, grown by means of the rf magnetron sputtering technique. Sens Actuators B 8: 79-88. doi: 10.1016/0925-4005(92)85012-L
[32]	Dolbec R, El Khakani MA, Serventi AM, et al. (2003) Influence of the nanostructural characteristics on the gas sensing properties of pulsed laser deposited tin oxide thin films. Sens Actuators B 93: 566-571. doi: 10.1016/S0925-4005(03)00229-6
[33]	Khan AF, Mehmood M, AslamM, et al. (2010) Characteristics of electron beam evaporated nanocrystalline SnO₂ thin films annealed in air. Appl Surf Sci 256: 2252-2258. doi: 10.1016/j.apsusc.2009.10.047
[34]	Jones GD (1967) Jahn-Teller Splittings in the Optical Absorption Spectra of Divalent Iron Compounds. Phys Rev 155: 259-285. doi: 10.1103/PhysRev.155.259
[35]	Babu B, Aswani T, Thirumala Rao G, et al. (2014) Room temperature ferromagnetism and optical properties of Cu²⁺ doped ZnO nanopowder by ultrasound assisted solid state reaction technique. J Magn Magn Mater 355: 76-80. doi: 10.1016/j.jmmm.2013.11.038
[36]	Benhaliliba M, Benouis CE, Tiburcio-Silver A, et al. (2012) Luminescence and physical properties of copper doped CdO derived nanostructures. J Lumin 132: 2653-2658. doi: 10.1016/j.jlumin.2012.03.044
[37]	Sonawane YS, Kanade KG, Kale BB, et al. (2008) Electrical and gas sensing properties of self-aligned copper-doped zinc oxide nanoparticles. Mater Res Bull 43: 2719-2726. doi: 10.1016/j.materresbull.2007.10.014
[38]	Karamat S, Rawat RS, Tan TL, et al. (2013) Exciting Dilute Magnetic Semiconductor: Copper-Doped ZnO. J Supercond Novel Magn 26: 187-195. doi: 10.1007/s10948-012-1710-2
[39]	Rapacz-Kmita A, Paluszkiewicz C, Slosarczyk A, et al. (2005) FTIR and XRD evaluation of carbonated hydroxyapatite powders synthesized by wet methods. J Mol Struct 744: 657-661.
[40]	Rama Krishna Ch, Ravikumar RVSSN (2014) Synthesis and characterization of vanadium ions containing chloro-cadmium phosphate CdHPO₄Cl[H₃N(CH₂)₆NH₃]_0.5 crystals. Physica B 433: 7-11.
[41]	Fathi MH, MohammadiZahrani E (2009) Mechanical alloying synthesis and bioactivity evaluation of nanocrystalline fluoridated hydroxyapatite. J Cryst Growth 311: 1392-1403. doi: 10.1016/j.jcrysgro.2008.11.100
[42]	Liu Y, Wang W, Zhan Y, et al. (2002) A simple route to hydroxyapatite nanofibers. Mater Lett 56: 496-501. doi: 10.1016/S0167-577X(02)00539-6
[43]	Smith DW (1970) Relationship between electron spin resonance g-values and covalent bonding in tetragonal copper(II) compounds. J ChemSoc A 3108-3120.
[44]	Rao MC, Ravindranadh K (2016) Optical and EPR Studies of Cu²⁺ Doped SnO₂ Thin Films by Spray Pyrolysis. Mater Res Innov.
[45]	Murugan R, Ramakrishna S (2005) Aqueous mediated synthesis of bioresorbable nanocrystalline hydroxyapatite. J Cryst Growth 274: 209-213. doi: 10.1016/j.jcrysgro.2004.09.069
[46]	Zhang H, Zhu Q, Xie Z (2005) Mechanochemical-hydrothermal synthesis and characterization of fluoridated hydroxyapatite. Mater Res Bull 40: 1326-1334. doi: 10.1016/j.materresbull.2005.04.005
[47]	Jaya RB, Rajesh YM, Pushpa MV, et al. (2015) Optical and Structural Investigations of Cu(II) ions doped Li₂CaAl₄(PO₄)₄F₄ Nanophosphors. Appl Mag Res 46: 953-964. doi: 10.1007/s00723-015-0697-9

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