{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T11:10:33Z","timestamp":1785409833134,"version":"3.56.0"},"reference-count":34,"publisher":"Optica Publishing Group","issue":"12","license":[{"start":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T00:00:00Z","timestamp":1781136000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR-OA"},{"start":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T00:00:00Z","timestamp":1781136000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100005375","name":"Latvian Council of Science","doi-asserted-by":"crossref","award":["lzp-2022\/1-0331"],"award-info":[{"award-number":["lzp-2022\/1-0331"]}],"id":[{"id":"10.13039\/501100005375","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/02ar66p97","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Express"],"published-print":{"date-parts":[[2026,6,15]]},"abstract":"<jats:p>\n                    <jats:italic toggle=\"yes\">In situ<\/jats:italic>\n                    spectroscopic ellipsometry of buried organic thin films is inherently model-dependent, and parameter correlations in multilayer stacks can yield non-unique optical solutions. We investigate the thermal evolution of buried layers in ITO\/PEDOT:PSS\/TAPC\/Ag structures using\n                    <jats:italic toggle=\"yes\">in situ<\/jats:italic>\n                    spectroscopic ellipsometry complemented by\n                    <jats:italic toggle=\"yes\">ex situ<\/jats:italic>\n                    Mueller-matrix ellipsometry. Although several optical models reproduce the dynamic \u03a8\u2013\u0394 spectra comparably, identifying a physically consistent solution requires additional constraints. The thermo-optic coefficient of TAPC provides a robust discriminator, while Mueller-matrix data reveal confinement-induced uniaxial anisotropy in PEDOT:PSS after prolonged annealing at 50\u00b0C. This behavior indicates thermally activated structural relaxation under constrained boundaries, producing refractive-index changes beyond intrinsic thermo-optic effects, whereas TAPC remains optically stable over 72\u2005h.\n                  <\/jats:p>","DOI":"10.1364\/oe.589190","type":"journal-article","created":{"date-parts":[[2026,4,24]],"date-time":"2026-04-24T17:00:08Z","timestamp":1777050008000},"page":"22667","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["<i>In situ<\/i>\n                    spectroscopic ellipsometry of buried organic layers under thermal treatment \u2013 part I: model discrimination and confinement-induced optical anisotropy in PEDOT:PSS\/TAPC stacks"],"prefix":"10.1364","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6752-7622","authenticated-orcid":true,"given":"Ilze","family":"Aulika","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04a0bad71","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patricija","family":"Paulsone","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04a0bad71","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jelena","family":"Butikova","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04a0bad71","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Margarita Anna","family":"Zommere","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04a0bad71","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ralfs","family":"Lukins","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04a0bad71","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laima","family":"Trinklere","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04a0bad71","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Monika","family":"Skruodiene","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04a0bad71","id-type":"ROR","asserted-by":"publisher"}]},{"name":"State Research Institute Center for Physical Sciences and Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aivars","family":"Vembris","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04a0bad71","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,6,11]]},"reference":[{"key":"oe-34-12-22667-R1","doi-asserted-by":"publisher","first-page":"8449","DOI":"10.1021\/cr400704v","type":"journal-article","volume":"115","author":"Scholz","year":"2015","journal-title":"Chem. Rev."},{"key":"oe-34-12-22667-R2","doi-asserted-by":"publisher","first-page":"14322","DOI":"10.1364\/OE.17.014322","type":"journal-article","volume":"17","author":"Dejneka","year":"2009","journal-title":"Opt. Express"},{"key":"oe-34-12-22667-R3","doi-asserted-by":"publisher","first-page":"39429","DOI":"10.1021\/acsomega.2c05945","type":"journal-article","volume":"7","author":"Kong","year":"2022","journal-title":"ACS Omega"},{"key":"oe-34-12-22667-R4","doi-asserted-by":"publisher","first-page":"123514","DOI":"10.1063\/1.4869956","type":"journal-article","volume":"115","author":"Hiate","year":"2014","journal-title":"J. Appl. Phys."},{"key":"oe-34-12-22667-R5","doi-asserted-by":"publisher","first-page":"2261","DOI":"10.3390\/ma18102261","type":"journal-article","volume":"18","author":"Aulika","year":"2025","journal-title":"Materials"},{"key":"oe-34-12-22667-R6","doi-asserted-by":"publisher","first-page":"481","DOI":"10.1002\/(SICI)1521-4095(200004)12:7<481::AID-ADMA481>3.0.CO;2-C","type":"journal-article","volume":"12","author":"Groenendaal","year":"2000","journal-title":"Adv. Mater."},{"key":"oe-34-12-22667-R7","doi-asserted-by":"publisher","first-page":"2561","DOI":"10.1002\/polb.10659","type":"journal-article","volume":"41","author":"Crispin","year":"2003","journal-title":"J. Polym. Sci. B Polym. Phys."},{"key":"oe-34-12-22667-R8","doi-asserted-by":"publisher","first-page":"4354","DOI":"10.1021\/cm061032+","type":"journal-article","volume":"18","author":"Crispin","year":"2006","journal-title":"Chem. Mater."},{"key":"oe-34-12-22667-R9","doi-asserted-by":"publisher","first-page":"727","DOI":"10.1016\/j.orgel.2008.05.006","type":"journal-article","volume":"9","author":"Nardes","year":"2008","journal-title":"Org. Electron."},{"key":"oe-34-12-22667-R10","doi-asserted-by":"publisher","first-page":"3763","DOI":"10.1002\/adfm.201203449","type":"journal-article","volume":"23","author":"Kim","year":"2013","journal-title":"Adv. Funct. Mater."},{"key":"oe-34-12-22667-R11","doi-asserted-by":"publisher","first-page":"313","DOI":"10.1016\/j.orgel.2019.03.009","type":"journal-article","volume":"69","author":"Salsberg","year":"2019","journal-title":"Org. Electron."},{"key":"oe-34-12-22667-R12","doi-asserted-by":"publisher","first-page":"2760","DOI":"10.1063\/1.105880","type":"journal-article","volume":"59","author":"Kido","year":"1991","journal-title":"Appl. Phys. Lett."},{"key":"oe-34-12-22667-R13","doi-asserted-by":"publisher","first-page":"621","DOI":"10.1021\/cm1024052","type":"journal-article","volume":"23","author":"Sasabe","year":"2011","journal-title":"Chem. Mater."},{"key":"oe-34-12-22667-R14","doi-asserted-by":"publisher","first-page":"1245","DOI":"10.1103\/RevModPhys.85.1245","type":"journal-article","volume":"85","author":"Reineke","year":"2013","journal-title":"Rev. Mod. Phys."},{"key":"oe-34-12-22667-R15","doi-asserted-by":"publisher","first-page":"024512","DOI":"10.1063\/1.2430922","type":"journal-article","volume":"101","author":"Kondakov","year":"2007","journal-title":"J. Appl. Phys."},{"key":"oe-34-12-22667-R16","doi-asserted-by":"publisher","first-page":"034905","DOI":"10.1063\/1.3072622","type":"journal-article","volume":"105","author":"Jarikov","year":"2009","journal-title":"J. Appl. Phys."},{"key":"oe-34-12-22667-R17","doi-asserted-by":"publisher","first-page":"215502","DOI":"10.1063\/1.4921829","type":"journal-article","volume":"117","author":"Schmidt","year":"2015","journal-title":"J. Appl. Phys."},{"key":"oe-34-12-22667-R18","first-page":"392","author":"Fujiwara","year":"2007"},{"key":"oe-34-12-22667-R19","volume":"52","author":"Hinrichs","year":"2018"},{"key":"oe-34-12-22667-R20","doi-asserted-by":"publisher","first-page":"272A","DOI":"10.1366\/000370205774783106","type":"journal-article","volume":"59","author":"Hinrichs","year":"2005","journal-title":"Appl. Spectrosc."},{"key":"oe-34-12-22667-R23","doi-asserted-by":"publisher","first-page":"158","DOI":"10.1016\/j.orgel.2015.07.032","type":"journal-article","volume":"26","author":"Rabelo de Moraes","year":"2015","journal-title":"Org. Electron."},{"key":"oe-34-12-22667-R24","doi-asserted-by":"publisher","first-page":"929","DOI":"10.1021\/acsaelm.0c01043","type":"journal-article","volume":"3","author":"Anand","year":"2021","journal-title":"ACS Appl. Electron. Mater."},{"key":"oe-34-12-22667-R25","doi-asserted-by":"publisher","first-page":"2996","DOI":"10.3390\/s18092996","type":"journal-article","volume":"18","author":"Lee","year":"2018","journal-title":"Sensors"},{"key":"oe-34-12-22667-R26","doi-asserted-by":"publisher","first-page":"15880","DOI":"10.1021\/acsami.7b03128","type":"journal-article","volume":"9","author":"Muckley","year":"2017","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"oe-34-12-22667-R27","doi-asserted-by":"publisher","first-page":"083301","DOI":"10.1063\/1.4819155","type":"journal-article","volume":"103","author":"He","year":"2013","journal-title":"Appl. Phys. Lett."},{"key":"oe-34-12-22667-R28","doi-asserted-by":"publisher","first-page":"100419","DOI":"10.1016\/j.omx.2025.100419","type":"journal-article","volume":"27","author":"Aulika","year":"2025","journal-title":"Optical Materials: X"},{"key":"oe-34-12-22667-R29","doi-asserted-by":"publisher","first-page":"100408","DOI":"10.1016\/j.omx.2025.100408","type":"journal-article","volume":"26","author":"Aulika","year":"2025","journal-title":"Optical Materials: X"},{"key":"oe-34-12-22667-R31","doi-asserted-by":"publisher","first-page":"1948","DOI":"10.1016\/j.orgel.2011.08.008","type":"journal-article","volume":"12","author":"Mauger","year":"2011","journal-title":"Org. Electron."},{"key":"oe-34-12-22667-R32","doi-asserted-by":"publisher","first-page":"19245","DOI":"10.1039\/D4TC03066D","type":"journal-article","volume":"12","author":"Guruge","year":"2024","journal-title":"J. Mater. Chem. C"},{"key":"oe-34-12-22667-R33","doi-asserted-by":"publisher","first-page":"1600","DOI":"10.1021\/acs.langmuir.2c03038","type":"journal-article","volume":"39","author":"Lee","year":"2023","journal-title":"Langmiur"},{"key":"oe-34-12-22667-R34","doi-asserted-by":"publisher","first-page":"101990","DOI":"10.1016\/j.progpolymsci.2025.101990","type":"journal-article","volume":"166","author":"Chen","year":"2025","journal-title":"Prog. Polym. Sci."},{"key":"oe-34-12-22667-R35","doi-asserted-by":"publisher","first-page":"3298","DOI":"10.3390\/polym15153298","type":"journal-article","volume":"15","author":"Velasco Davoise","year":"2023","journal-title":"Polymers"},{"key":"oe-34-12-22667-R36","doi-asserted-by":"publisher","first-page":"034902","DOI":"10.1063\/5.0030982","type":"journal-article","volume":"92","author":"Yamaguchi","year":"2021","journal-title":"Rev. Sci. Instrum."},{"key":"oe-34-12-22667-R37","doi-asserted-by":"publisher","first-page":"260","DOI":"10.1038\/ncomms1259","type":"journal-article","volume":"2","author":"Napolitano","year":"2011","journal-title":"Nat. Commun."}],"container-title":["Optics Express"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/opg.optica.org\/viewmedia.cfm?URI=oe-34-12-22667&seq=0","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T18:23:35Z","timestamp":1781202215000},"score":1,"resource":{"primary":{"URL":"https:\/\/opg.optica.org\/abstract.cfm?URI=oe-34-12-22667"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,11]]},"references-count":34,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2026]]},"published-print":{"date-parts":[[2026]]}},"URL":"https:\/\/doi.org\/10.1364\/oe.589190","relation":{},"ISSN":["1094-4087"],"issn-type":[{"value":"1094-4087","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,6,11]]},"assertion":[{"value":"Optica Publishing Group","name":"publisher","label":"This article is maintained by"},{"value":"https:\/\/doi.org\/10.1364\/OE.589190","name":"articlelink","label":"Crossref DOI link to publisher maintained version"},{"value":"research-article","name":"content_type","label":"Article type"},{"value":"Screened by Similarity Check","name":"cross_check","label":"Similarity check"},{"value":"Yes","order":0,"name":"peer_reviewed","label":"Peer reviewed","group":{"name":"peer_review","label":"Peer review"}},{"value":"Single blind","order":1,"name":"review_process","label":"Review process","group":{"name":"peer_review","label":"Peer review"}},{"value":"6 January 2026","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"19 April 2026","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"11 June 2026","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}},{"value":"\u00a9 2026 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement","name":"copyright","label":"Copyright"}]}}