Crystal Structure, Lattice Strain, Morphology, and Electrical Properties of SnO2 Nanoparticles Induced by Low Calcination Temperature
The electrical properties of tin dioxide (SnO2) nanoparticles induced by low calcination temperature were systematically investigated for gas sensing applications. The precipitation method was used to prepare SnO2 powders, while the sol-gel method was adopted to prepare SnO2 thin films at different...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/3852421 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849685898729357312 |
|---|---|
| author | Panya Khaenamkaew Dhonluck Manop Chaileok Tanghengjaroen Worasit Palakawong Na Ayuthaya |
| author_facet | Panya Khaenamkaew Dhonluck Manop Chaileok Tanghengjaroen Worasit Palakawong Na Ayuthaya |
| author_sort | Panya Khaenamkaew |
| collection | DOAJ |
| description | The electrical properties of tin dioxide (SnO2) nanoparticles induced by low calcination temperature were systematically investigated for gas sensing applications. The precipitation method was used to prepare SnO2 powders, while the sol-gel method was adopted to prepare SnO2 thin films at different calcination temperatures. The characterization was done by X-ray diffraction, scanning electron microscopy (SEM), and atomic force microscopy (AFM). The samples were perfectly matched with the rutile tetragonal structure. The average crystallite sizes of SnO2 powders were 45 ± 2, 50 ± 2, 62 ± 2, and 65 ± 2 nm at calcination temperatures of 300, 350, 400, and 450°C, respectively. SEM images and AFM topographies showed an increase in particle size and roughness with the rise in calcination temperature. The dielectric constant decreased with the increase in the frequency of the applied signals but increased on increasing calcination temperature. By using the UV-Vis spectrum, the direct energy bandgaps of SnO2 thin films were found as 4.85, 4.80, 4.75, and 4.10 eV for 300, 350, 400, and 450°C, respectively. Low calcination temperature as 300°C allows smaller crystallite sizes and lower dielectric constants but increases the surface roughness of SnO2, while lattice strain remains independent. Thus, low calcination temperatures of SnO2 are promising for electronic devices like gas sensors. |
| format | Article |
| id | doaj-art-c752edbb124d494d8fe150d5f30a4813 |
| institution | DOAJ |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-c752edbb124d494d8fe150d5f30a48132025-08-20T03:22:55ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/38524213852421Crystal Structure, Lattice Strain, Morphology, and Electrical Properties of SnO2 Nanoparticles Induced by Low Calcination TemperaturePanya Khaenamkaew0Dhonluck Manop1Chaileok Tanghengjaroen2Worasit Palakawong Na Ayuthaya3Department of Basic Science and Physical Education, Faculty of Science at Si Racha, Kasetsart University, Sriracha Campus, Chonburi 20230, ThailandDepartment of Basic Science and Physical Education, Faculty of Science at Si Racha, Kasetsart University, Sriracha Campus, Chonburi 20230, ThailandDepartment of Basic Science and Physical Education, Faculty of Science at Si Racha, Kasetsart University, Sriracha Campus, Chonburi 20230, ThailandDepartment of Resources and Environment, Faculty of Science at Si Racha, Kasetsart University, Sriracha Campus, Chonburi 20230, ThailandThe electrical properties of tin dioxide (SnO2) nanoparticles induced by low calcination temperature were systematically investigated for gas sensing applications. The precipitation method was used to prepare SnO2 powders, while the sol-gel method was adopted to prepare SnO2 thin films at different calcination temperatures. The characterization was done by X-ray diffraction, scanning electron microscopy (SEM), and atomic force microscopy (AFM). The samples were perfectly matched with the rutile tetragonal structure. The average crystallite sizes of SnO2 powders were 45 ± 2, 50 ± 2, 62 ± 2, and 65 ± 2 nm at calcination temperatures of 300, 350, 400, and 450°C, respectively. SEM images and AFM topographies showed an increase in particle size and roughness with the rise in calcination temperature. The dielectric constant decreased with the increase in the frequency of the applied signals but increased on increasing calcination temperature. By using the UV-Vis spectrum, the direct energy bandgaps of SnO2 thin films were found as 4.85, 4.80, 4.75, and 4.10 eV for 300, 350, 400, and 450°C, respectively. Low calcination temperature as 300°C allows smaller crystallite sizes and lower dielectric constants but increases the surface roughness of SnO2, while lattice strain remains independent. Thus, low calcination temperatures of SnO2 are promising for electronic devices like gas sensors.http://dx.doi.org/10.1155/2020/3852421 |
| spellingShingle | Panya Khaenamkaew Dhonluck Manop Chaileok Tanghengjaroen Worasit Palakawong Na Ayuthaya Crystal Structure, Lattice Strain, Morphology, and Electrical Properties of SnO2 Nanoparticles Induced by Low Calcination Temperature Advances in Materials Science and Engineering |
| title | Crystal Structure, Lattice Strain, Morphology, and Electrical Properties of SnO2 Nanoparticles Induced by Low Calcination Temperature |
| title_full | Crystal Structure, Lattice Strain, Morphology, and Electrical Properties of SnO2 Nanoparticles Induced by Low Calcination Temperature |
| title_fullStr | Crystal Structure, Lattice Strain, Morphology, and Electrical Properties of SnO2 Nanoparticles Induced by Low Calcination Temperature |
| title_full_unstemmed | Crystal Structure, Lattice Strain, Morphology, and Electrical Properties of SnO2 Nanoparticles Induced by Low Calcination Temperature |
| title_short | Crystal Structure, Lattice Strain, Morphology, and Electrical Properties of SnO2 Nanoparticles Induced by Low Calcination Temperature |
| title_sort | crystal structure lattice strain morphology and electrical properties of sno2 nanoparticles induced by low calcination temperature |
| url | http://dx.doi.org/10.1155/2020/3852421 |
| work_keys_str_mv | AT panyakhaenamkaew crystalstructurelatticestrainmorphologyandelectricalpropertiesofsno2nanoparticlesinducedbylowcalcinationtemperature AT dhonluckmanop crystalstructurelatticestrainmorphologyandelectricalpropertiesofsno2nanoparticlesinducedbylowcalcinationtemperature AT chaileoktanghengjaroen crystalstructurelatticestrainmorphologyandelectricalpropertiesofsno2nanoparticlesinducedbylowcalcinationtemperature AT worasitpalakawongnaayuthaya crystalstructurelatticestrainmorphologyandelectricalpropertiesofsno2nanoparticlesinducedbylowcalcinationtemperature |