Micro Semiconductor CO Sensors Based on Indium-Doped Tin Dioxide Nanocrystalline Powders
The precursors of SnO2 or In2O3/SnO2 nanocrystlline powders have been prepared bythe sol-precipitation method. The precursors were calcined at different temperatures to prepareSnO2 or In2O3/SnO2 nanocrystalline powders with different particle sizes. The nanocrystalliteswere examined by differential...
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| Format: | Article |
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MDPI AG
2006-05-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/6/5/526/ |
| _version_ | 1818014053264523264 |
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| author | Jin Suk Wang Hi Doek Lee Jihye Gwak Chi Hwan Han Sang Do Han Il Jin Kim |
| author_facet | Jin Suk Wang Hi Doek Lee Jihye Gwak Chi Hwan Han Sang Do Han Il Jin Kim |
| author_sort | Jin Suk Wang |
| collection | DOAJ |
| description | The precursors of SnO2 or In2O3/SnO2 nanocrystlline powders have been prepared bythe sol-precipitation method. The precursors were calcined at different temperatures to prepareSnO2 or In2O3/SnO2 nanocrystalline powders with different particle sizes. The nanocrystalliteswere examined by differential thermal analysis (DTA), X-ray diffraction (XRD) andtransmission electron microscopy (TEM). And then thick film CO sensors were fabricated usingprepared SnO2 or In2O3/SnO2 nanocrystlline powders loaded with PdOx. The composition thatgave the highest sensitivity for CO was in the weight% ratio of 5 wt.% In2O3/SnO2:PdOx as99:1(wt %). The composite material was found sensitive against CO at the working temperature200 °C. It was found that the sensors based on In2O3/SnO2 nanocrystalline system exhibitedvery short response time to CO at ppm level. These characteristics make the sensor to be apromising candidate for detecting low concentrations of CO. |
| first_indexed | 2024-04-14T06:40:40Z |
| format | Article |
| id | doaj.art-e360c7d202a44362b7ec91d8d5073d68 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T06:40:40Z |
| publishDate | 2006-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-e360c7d202a44362b7ec91d8d5073d682022-12-22T02:07:21ZengMDPI AGSensors1424-82202006-05-016552653510.3390/s6050526Micro Semiconductor CO Sensors Based on Indium-Doped Tin Dioxide Nanocrystalline PowdersJin Suk WangHi Doek LeeJihye GwakChi Hwan HanSang Do HanIl Jin KimThe precursors of SnO2 or In2O3/SnO2 nanocrystlline powders have been prepared bythe sol-precipitation method. The precursors were calcined at different temperatures to prepareSnO2 or In2O3/SnO2 nanocrystalline powders with different particle sizes. The nanocrystalliteswere examined by differential thermal analysis (DTA), X-ray diffraction (XRD) andtransmission electron microscopy (TEM). And then thick film CO sensors were fabricated usingprepared SnO2 or In2O3/SnO2 nanocrystlline powders loaded with PdOx. The composition thatgave the highest sensitivity for CO was in the weight% ratio of 5 wt.% In2O3/SnO2:PdOx as99:1(wt %). The composite material was found sensitive against CO at the working temperature200 °C. It was found that the sensors based on In2O3/SnO2 nanocrystalline system exhibitedvery short response time to CO at ppm level. These characteristics make the sensor to be apromising candidate for detecting low concentrations of CO.http://www.mdpi.com/1424-8220/6/5/526/Micro CO gas sensorindium oxidenanocrystalline powderstin dioxide. |
| spellingShingle | Jin Suk Wang Hi Doek Lee Jihye Gwak Chi Hwan Han Sang Do Han Il Jin Kim Micro Semiconductor CO Sensors Based on Indium-Doped Tin Dioxide Nanocrystalline Powders Sensors Micro CO gas sensor indium oxide nanocrystalline powders tin dioxide. |
| title | Micro Semiconductor CO Sensors Based on Indium-Doped Tin Dioxide Nanocrystalline Powders |
| title_full | Micro Semiconductor CO Sensors Based on Indium-Doped Tin Dioxide Nanocrystalline Powders |
| title_fullStr | Micro Semiconductor CO Sensors Based on Indium-Doped Tin Dioxide Nanocrystalline Powders |
| title_full_unstemmed | Micro Semiconductor CO Sensors Based on Indium-Doped Tin Dioxide Nanocrystalline Powders |
| title_short | Micro Semiconductor CO Sensors Based on Indium-Doped Tin Dioxide Nanocrystalline Powders |
| title_sort | micro semiconductor co sensors based on indium doped tin dioxide nanocrystalline powders |
| topic | Micro CO gas sensor indium oxide nanocrystalline powders tin dioxide. |
| url | http://www.mdpi.com/1424-8220/6/5/526/ |
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