Sensitivity and long-term stability of γ-Fe2O3 and CoFe2O4 nanoparticle gas sensors for NO2, CO and acetone sensing — A comparative study

The Tenth International Conference on Advanced Semiconductor Devices and Microsystems Pub Date : 2014-12-29 DOI:10.1109/ASDAM.2014.6998691

S. Luby, M. Jergel, M. Benkovicova, P. Šiffalovič, J. Ivančo, K. Vegso, E. Majková, R. Rella, M. G. Manera, S. Capone, I. Vávra

{"title":"Sensitivity and long-term stability of γ-Fe2O3 and CoFe2O4 nanoparticle gas sensors for NO2, CO and acetone sensing — A comparative study","authors":"S. Luby, M. Jergel, M. Benkovicova, P. Šiffalovič, J. Ivančo, K. Vegso, E. Majková, R. Rella, M. G. Manera, S. Capone, I. Vávra","doi":"10.1109/ASDAM.2014.6998691","DOIUrl":null,"url":null,"abstract":"Gas sensors based on γ-Fe2O3 and CoFe2O4 nanoparticles (NPs) were prepared by Langmuir-Schaeffer deposition onto Al2O3 and auxilliary Si substrates. NPs with the size of 6.4 nm (Fe2O3) and 7.6 nm (CoFe2O4) and polydispersity of 9 % were fabricated by chemical route. NP arrays were analyzed by GIXRD, SEM, TEM, DLS and ellipsometry. Fe2O3 sensors show high response of 38 for 500 ppb of strongly oxidizing NO2. The response of CoFe2O4 sensors is 10 at 5 ppm of NO2. Sensitivities are lower with reducing CO and acetone gases. After one year storage at room temperature, a 6 % decrease of response was found. The sensor sensitivities are discussed comparing with the best published results so far.","PeriodicalId":313866,"journal":{"name":"The Tenth International Conference on Advanced Semiconductor Devices and Microsystems","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2014-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Tenth International Conference on Advanced Semiconductor Devices and Microsystems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ASDAM.2014.6998691","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

Gas sensors based on γ-Fe₂O₃ and CoFe₂O₄ nanoparticles (NPs) were prepared by Langmuir-Schaeffer deposition onto Al₂O₃ and auxilliary Si substrates. NPs with the size of 6.4 nm (Fe₂O₃) and 7.6 nm (CoFe₂O₄) and polydispersity of 9 % were fabricated by chemical route. NP arrays were analyzed by GIXRD, SEM, TEM, DLS and ellipsometry. Fe₂O₃ sensors show high response of 38 for 500 ppb of strongly oxidizing NO₂. The response of CoFe₂O₄ sensors is 10 at 5 ppm of NO₂. Sensitivities are lower with reducing CO and acetone gases. After one year storage at room temperature, a 6 % decrease of response was found. The sensor sensitivities are discussed comparing with the best published results so far.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

γ-Fe2O3和CoFe2O4纳米颗粒气体传感器对NO2、CO和丙酮传感的灵敏度和长期稳定性比较研究

采用Langmuir-Schaeffer沉积法在Al2O3和辅助Si衬底上制备了γ-Fe2O3和CoFe2O4纳米颗粒(NPs)气体传感器。采用化学方法制备了尺寸分别为6.4 nm (Fe2O3)和7.6 nm (CoFe2O4)、多分散度为9%的纳米粒子。采用GIXRD、SEM、TEM、DLS和椭偏仪对NP阵列进行了分析。Fe2O3传感器对500 ppb强氧化NO2的响应为38。当NO2浓度为5ppm时，CoFe2O4传感器的响应为10。还原CO和丙酮气体的灵敏度较低。室温贮存1年后，反应下降6%。对传感器的灵敏度进行了讨论，并与迄今为止发表的最佳结果进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

The Tenth International Conference on Advanced Semiconductor Devices and Microsystems

自引率

0.00%

发文量

期刊最新文献

InGaN nano-LEDs for energy saving optoelectronics Technology of conductive polymer PEDOT:PSS films AlN/GaN/AlN double heterostructures with thin AlN top barriers DLTS study of electrically active defects in triple quantum well InGaAsN/GaAs heterostructures Different polarities of InN (0001) heterostructures on Si (111) substrates