Effects of nozzle-to-substrate distance and annealing atmospheres on V2O5 thin films prepared by spray pyrolysis technique

被引：13
作者：
Darroudi, Nayere [1 ]
Eshghi, Hosein [1 ]
机构：
[1] Shahrood Univ Technol, Fac Phys, Shahrood, Iran
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2020年 / 262卷
关键词：
V2O5; Spray pyrolysis; Thin film; Nano-grains; Annealing; Ambient atmosphere; DISPERSIVE OPTICAL-CONSTANTS; NANORODS; OXIDES; GEL;
D O I：
10.1016/j.mseb.2020.114726
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this research, vanadium pentoxide (V2O5) thin films were prepared on glass substrates by spray pyrolysis technique and the effect of nozzle to substrate distance (NSD) was investigated. The field emission Scanning electron microscope (FESEM) images and EDX analysis indicated the formation of nano-grains that improved their stoichiometry with increasing NSD. The XRD and Raman spectra showed that structural properties (orthorhombic/tetragonal phases) depend on NSD. The analysis of optical transmittance spectra revealed that with increasing NSD the direct band gap of the samples is increased from 2.27 to 2.60 eV due to improvement of chemical stoichiometry and crystalline phase change of the layers. Finally, sample with weak tetragonal phase was annealed in various atmospheres (N-2, air and O-2). We found the atmosphere of annealing process had profound effect on morphological, structural and optical properties of the as-grown sample.
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页数：7
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共 52 条
[31]   Low temperature chemical vapor deposition of nanocrystalline V2O5 thin films [J].
Nandakumar, Navaneetha Krishnan ;
Seebauer, Edmund G. .
THIN SOLID FILMS, 2011, 519 (11) :3663-3668
[32]   Recent advances in non-metals-doped TiO2 nanostructured photocatalysts for visible-light driven hydrogen production, CO2 reduction and air purification [J].
Patil, Shivaraj B. ;
Basavarajappa, Patil S. ;
Ganganagappa, Nagaraju ;
Jyothi, M. S. ;
Raghu, A. V. ;
Reddy, Kakarla Raghava .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2019, 44 (26) :13022-13039
[33]   Nanostructured V2O5 thin films deposited at low sputtering power [J].
Raj, P. Deepak ;
Gupta, Sudha ;
Sridharan, M. .
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2015, 39 :426-432
[34]   Gel-combustion synthesized vanadium pentoxide nanowire clusters for rechargeable lithium batteries [J].
Ramasami, Alamelu K. ;
Reddy, M. V. ;
Nithyadharseni, P. ;
Chowdari, B. V. R. ;
Balakrishna, Geetha R. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 695 :850-858
[35]   TRANSITION-METAL OXIDES [J].
RAO, CNR .
ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1989, 40 :291-326
[36]   Photocatalytic recovery of H2 from H2S containing wastewater: Surface and interface control of photo-excitons in Cu2S@TiO2 core-shell nanostructures [J].
Rao, V. Navakoteswara ;
Reddy, N. Lakshmana ;
Kumari, M. Mamatha ;
Ravi, P. ;
Sathish, M. ;
Kuruvilla, K. M. ;
Preethi, V ;
Reddy, Kakarla Raghava ;
Shetti, Nagaraj P. ;
Aminabhavi, Tejraj M. ;
Shankar, M., V .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 254 :174-185
[37]   Strain-induced properties of epitaxial VOx thin films [J].
Rata, AD ;
Hibma, T .
EUROPEAN PHYSICAL JOURNAL B, 2005, 43 (02) :195-200
[38]   Synthesis and photoelectrochemical water oxidation of (Y, Cu) codoped α-Fe2O3 nanostructure photoanode [J].
Reddy, Ch Venkata ;
Reddy, I. Neelakanta ;
Akkinepally, Bhargav ;
Reddy, Kakarla Raghava ;
Shim, Jaesool .
JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 814
[39]   Efficient removal of toxic organic dyes and photoelectrochemical properties of iron-doped zirconia nanoparticles [J].
Reddy, Ch Venkata ;
Reddy, I. Neelakanta ;
Harish, V. V. N. ;
Reddy, Kakarla Raghava ;
Shetti, Nagaraj P. ;
Shim, Jaesool ;
Aminabhavi, Tejraj M. .
CHEMOSPHERE, 2020, 239
[40]   Template-free synthesis of tetragonal Co-doped ZrO2 nanoparticles for applications in electrochemical energy storage and water treatment [J].
Reddy, Ch Venkata ;
Reddy, I. Neelakanta ;
Reddy, Kakarla Raghava ;
Jaesool, Shim ;
Yoo, Kisoo .
ELECTROCHIMICA ACTA, 2019, 317 :416-426
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