{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T15:08:48Z","timestamp":1761491328352,"version":"build-2065373602"},"reference-count":87,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2021,12,13]],"date-time":"2021-12-13T00:00:00Z","timestamp":1639353600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Romanian Ministry of Education and Research","award":["National Core Program PN19-03, contract no. 21 N\/2019","PN-III-P4-ID-PCE-2020-1691 contract no. 66\/2021","PN-II-ID 993 contract no. 649\/2009","JINR-RO theme 03-4-1128-2017\/2022 (order no. 269\/20.05.2020 and 356\/11.05.2021, project 62\/2020 and 82\/2021)"],"award-info":[{"award-number":["National Core Program PN19-03, contract no. 21 N\/2019","PN-III-P4-ID-PCE-2020-1691 contract no. 66\/2021","PN-II-ID 993 contract no. 649\/2009","JINR-RO theme 03-4-1128-2017\/2022 (order no. 269\/20.05.2020 and 356\/11.05.2021, project 62\/2020 and 82\/2021)"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>We investigated the optical and electrical properties of flexible single and bi-layer organic heterostructures prepared by vacuum evaporation with a p-type layer of arylenevinylene oligomers, based on carbazole, 3,3\u2032 bis(N hexylcarbazole)vinylbenzene = L13, or triphenylamine, 1,4 bis [4 (N,N\u2019 diphenylamino)phenylvinyl] benzene = L78, and an n-type layer of 5,10,15,20-tetra(4-pyrydil)21H,23H-porphyne = TPyP. Transparent conductor films of Al-doped ZnO (AZO) with high transparency, &gt;90% for wavelengths &gt; 400 nm, and low resistivity, between 6.9 \u00d7 10\u22124 \u2126\u00b7cm and 23 \u00d7 10\u22124 \u2126\u00b7cm, were deposited by pulsed laser deposition on flexible substrates of polyethylene terephthalate (PET). The properties of the heterostructures based on oligomers and zinc phthalocyanine (ZnPc) were compared, emphasizing the effect of the surface morphology. The measurements revealed a good absorption in the visible range of the PET\/AZO\/arylenevinylene oligomer\/TPyP heterostructures and a typical injection contact behavior with linear (ZnPc, L78) or non-linear (L13) J-V characteristics in the dark, at voltages &lt; 0.4 V. The heterostructure PET\/AZO\/L78\/TPyP\/Al showed a current density of ~1 mA\/cm2 at a voltage of 0.3 V. The correlation between the roughness exponent, evaluated from the height-height correlation function, grain shape, and electrical behavior was analyzed. Consequently, the oligomer based on triphenylamine could be a promising replacement of donor ZnPc in flexible electronic applications.<\/jats:p>","DOI":"10.3390\/ma14247688","type":"journal-article","created":{"date-parts":[[2021,12,14]],"date-time":"2021-12-14T01:20:41Z","timestamp":1639444841000},"page":"7688","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO Electrodes"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7755-1685","authenticated-orcid":false,"given":"Anca","family":"Stanculescu","sequence":"first","affiliation":[{"name":"Optical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2010-7318","authenticated-orcid":false,"given":"Marcela","family":"Socol","sequence":"additional","affiliation":[{"name":"Optical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7901-0361","authenticated-orcid":false,"given":"Oana","family":"Rasoga","sequence":"additional","affiliation":[{"name":"Optical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4030-360X","authenticated-orcid":false,"given":"Carmen","family":"Breazu","sequence":"additional","affiliation":[{"name":"Optical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicoleta","family":"Preda","sequence":"additional","affiliation":[{"name":"Optical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4326-5469","authenticated-orcid":false,"given":"Florin","family":"Stanculescu","sequence":"additional","affiliation":[{"name":"Faculty of Physics, University of Bucharest, 405 Atomistilor Street, P.O. Box MG-11, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1992-7346","authenticated-orcid":false,"given":"Gabriel","family":"Socol","sequence":"additional","affiliation":[{"name":"Optical Processes in Nanostructured Materials Laboratory, National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG-36, 077125 Magurele, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2421-3444","authenticated-orcid":false,"given":"Loredana","family":"Vacareanu","sequence":"additional","affiliation":[{"name":"Electroactive Polymers and Plasmochemistry, P. Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8058-4143","authenticated-orcid":false,"given":"Mihaela","family":"Girtan","sequence":"additional","affiliation":[{"name":"Laboratoire LPHIA, Universit\u00e9 d\u2019Angers, LUNAM 2, Bd. Lavoisier, 49045 Angers, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6510-8683","authenticated-orcid":false,"given":"Aleksandr S.","family":"Doroshkevich","sequence":"additional","affiliation":[{"name":"Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 141980 Dubna, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1016\/S1369-7021(06)71446-8","article-title":"Material challenge for flexible organic devices","volume":"9","author":"Lewis","year":"2006","journal-title":"Mater. Today"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Wong, W.S., and Salleo, A. (2009). 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