{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,14]],"date-time":"2026-03-14T10:41:14Z","timestamp":1773484874021,"version":"3.50.1"},"reference-count":29,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2020,9,1]],"date-time":"2020-09-01T00:00:00Z","timestamp":1598918400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Consejo Nacional de Ciencia y Tecnolog\u00eda, Mexico","award":["319362"],"award-info":[{"award-number":["319362"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>We studied the influences of the thickness of the porous silicon layer and the conductivity type on the porous silicon sensors response when exposed to ethanol vapor. The response was determined at room temperature (27 \u2218C) in darkness using a horizontal aluminum electrode pattern. The results indicated that the intensity of the response can be directly or inversely proportional to the thickness of the porous layer depending on the conductivity type of the semiconductor material. The response of the porous sensors was similar to the metal oxide sensors. The results can be used to appropriately select the conductivity of semiconductor materials and the thickness of the porous layer for the target gas.<\/jats:p>","DOI":"10.3390\/s20174942","type":"journal-article","created":{"date-parts":[[2020,9,1]],"date-time":"2020-09-01T08:53:43Z","timestamp":1598950423000},"page":"4942","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Porous Silicon Gas Sensors: The Role of the Layer Thickness and the Silicon Conductivity"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0132-4619","authenticated-orcid":false,"given":"Francisco","family":"Ram\u00edrez-Gonz\u00e1lez","sequence":"first","affiliation":[{"name":"Centro de Investigaci\u00f3n en Dispositivos Semiconductores, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. San Claudio, Puebla 72570, Mexico"}]},{"given":"Godofredo","family":"Garc\u00eda-Salgado","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n en Dispositivos Semiconductores, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. San Claudio, Puebla 72570, Mexico"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3453-2753","authenticated-orcid":false,"given":"Enrique","family":"Rosendo","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n en Dispositivos Semiconductores, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. San Claudio, Puebla 72570, Mexico"}]},{"given":"Tom\u00e1s","family":"D\u00edaz","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n en Dispositivos Semiconductores, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. San Claudio, Puebla 72570, Mexico"}]},{"given":"Fabiola","family":"Nieto-Caballero","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Qu\u00edmicas, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. San Claudio, Puebla 72570, Mexico"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5498-5640","authenticated-orcid":false,"given":"Antonio","family":"Coyopol","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n en Dispositivos Semiconductores, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. San Claudio, Puebla 72570, Mexico"}]},{"given":"Rom\u00e1n","family":"Romano","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n en Dispositivos Semiconductores, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. San Claudio, Puebla 72570, Mexico"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7647-3184","authenticated-orcid":false,"given":"Alberto","family":"Luna","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n en Dispositivos Semiconductores, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. San Claudio, Puebla 72570, Mexico"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4370-5655","authenticated-orcid":false,"given":"Karim","family":"Monfil","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n en Dispositivos Semiconductores, Benem\u00e9rita Universidad Aut\u00f3noma de Puebla, 14 sur y Av. 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