{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T17:13:29Z","timestamp":1773162809674,"version":"3.50.1"},"reference-count":35,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2014,3,6]],"date-time":"2014-03-06T00:00:00Z","timestamp":1394064000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper presents the electrical characteristics of solution-processed organic photodetectors based on poly(3-hexylthiophene-2,5-diyl) semiconducting polymer layers deposited by spin-coating on interdigitated metal electrodes. Four different electrode shapes have been used for this study in order to appraise the optimum electrode geometry. The measurement of the resistance as a function of the temperature reveals a transition from negative to positive temperature coefficient material around 80 \u00b0C for the polymer layers. Besides, slow reversible changes in the photodetectors conductivity were observed when moved from vacuum to the air and under illumination with a xenon lamp, which can be explained by the formation of charge transfer complexes with molecular oxygen and the polymer. The photogenerated current-light power ratio was found to be approximately linear in the 200 to 550 mW\/cm2 range.<\/jats:p>","DOI":"10.3390\/s140304484","type":"journal-article","created":{"date-parts":[[2014,3,6]],"date-time":"2014-03-06T10:48:37Z","timestamp":1394102917000},"page":"4484-4494","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Electrical Characterization of Photodetectors Based on Poly(3-hexylthiophene-2,5-diyl) Layers"],"prefix":"10.3390","volume":"14","author":[{"given":"Juan","family":"Ferrer","sequence":"first","affiliation":[{"name":"\u00c1rea de Electr\u00f3nica, Universidad Miguel Hern\u00e1ndez, Av. Universidad s\/n, Ed. Quorum V, Elche 03202, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9","family":"Alonso","sequence":"additional","affiliation":[{"name":"\u00c1rea de Electr\u00f3nica, Universidad Miguel Hern\u00e1ndez, Av. Universidad s\/n, Ed. Quorum V, Elche 03202, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Susana","family":"De \u00c1vila","sequence":"additional","affiliation":[{"name":"\u00c1rea de Electr\u00f3nica, Universidad Miguel Hern\u00e1ndez, Av. Universidad s\/n, Ed. Quorum V, Elche 03202, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2014,3,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1016\/j.orgel.2003.08.014","article-title":"The road to high efficiency organic light emitting devices","volume":"4","author":"Forest","year":"2003","journal-title":"Org. Electron."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/j.solmat.2004.02.021","article-title":"A brief history of the development of organic and polymeric photovoltaics","volume":"83","author":"Spangaard","year":"2004","journal-title":"Sol. Energy Mater. Sol. 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