{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T13:28:28Z","timestamp":1769261308677,"version":"3.49.0"},"reference-count":22,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2019,4,22]],"date-time":"2019-04-22T00:00:00Z","timestamp":1555891200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["2017R1A2B4007526"],"award-info":[{"award-number":["2017R1A2B4007526"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A strategy for improving the sensitivity of a sensor for detecting CO and NH3 gases is presented herein. The gas sensor was fabricated from ZnO metal oxide semiconductor nanostructures grown via a vapor\u2013liquid\u2013solid process and decorated with \u03b1-Fe2O3 nanoparticles via a sol\u2013gel process. The response was enhanced by the formation of an \u03b1-Fe2O3\/ZnO n\u2013n heterojunction and the growth of thinner wires. ZnO nanowires were grown on indium\u2013tin\u2013oxide glass electrodes using Sn as a catalyst for growth instead of Au. The structure and elemental composition were investigated using field-emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction. The gas sensing results indicate that the response value to 100 ppm CO was 18.8 at the optimum operating temperature of 300 \u00b0C.<\/jats:p>","DOI":"10.3390\/s19081903","type":"journal-article","created":{"date-parts":[[2019,4,22]],"date-time":"2019-04-22T11:02:53Z","timestamp":1555930973000},"page":"1903","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Improved Sensitivity of \u03b1-Fe2O3 Nanoparticle-Decorated ZnO Nanowire Gas Sensor for CO"],"prefix":"10.3390","volume":"19","author":[{"given":"Jeongseok","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Electronics Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Se-Hyeong","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-3863-0265","authenticated-orcid":false,"given":"So-Young","family":"Bak","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoojong","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyoungwan","family":"Woo","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sanghyun","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Smart Hybrid Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yooseong","family":"Lim","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Moonsuk","family":"Yi","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,4,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Woo, H.-S., Na, C.-W., and Lee, J.-H. 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