Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO Electrodes
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′ bis(N hexylcarbazole)vinylbenzene = L13, or triphenylamine, 1,4 bis [4 (N,N’ diphen...
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2021-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/24/7688 |
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| author | Anca Stanculescu Marcela Socol Oana Rasoga Carmen Breazu Nicoleta Preda Florin Stanculescu Gabriel Socol Loredana Vacareanu Mihaela Girtan Aleksandr S. Doroshkevich |
| author_facet | Anca Stanculescu Marcela Socol Oana Rasoga Carmen Breazu Nicoleta Preda Florin Stanculescu Gabriel Socol Loredana Vacareanu Mihaela Girtan Aleksandr S. Doroshkevich |
| author_sort | Anca Stanculescu |
| collection | DOAJ |
| description | 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′ bis(N hexylcarbazole)vinylbenzene = L13, or triphenylamine, 1,4 bis [4 (N,N’ 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, >90% for wavelengths > 400 nm, and low resistivity, between 6.9 × 10<sup>−4</sup> Ω·cm and 23 × 10<sup>−4</sup> Ω·cm, 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 < 0.4 V. The heterostructure PET/AZO/L78/TPyP/Al showed a current density of ~1 mA/cm<sup>2</sup> 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. |
| first_indexed | 2024-03-10T03:40:12Z |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:40:12Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-881eef0562844d1eba2c1674777561ec2023-11-23T09:21:36ZengMDPI AGMaterials1996-19442021-12-011424768810.3390/ma14247688Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO ElectrodesAnca Stanculescu0Marcela Socol1Oana Rasoga2Carmen Breazu3Nicoleta Preda4Florin Stanculescu5Gabriel Socol6Loredana Vacareanu7Mihaela Girtan8Aleksandr S. Doroshkevich9Optical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, RomaniaOptical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, RomaniaOptical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, RomaniaOptical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, RomaniaOptical Processes in Nanostructured Materials Laboratory, National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG-7, 077125 Magurele, RomaniaFaculty of Physics, University of Bucharest, 405 Atomistilor Street, P.O. Box MG-11, 077125 Magurele, RomaniaOptical Processes in Nanostructured Materials Laboratory, National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG-36, 077125 Magurele, RomaniaElectroactive Polymers and Plasmochemistry, P. Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, RomaniaLaboratoire LPHIA, Université d’Angers, LUNAM 2, Bd. Lavoisier, 49045 Angers, FranceFrank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 6 Joliot-Curie Str., 141980 Dubna, RussiaWe 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′ bis(N hexylcarbazole)vinylbenzene = L13, or triphenylamine, 1,4 bis [4 (N,N’ 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, >90% for wavelengths > 400 nm, and low resistivity, between 6.9 × 10<sup>−4</sup> Ω·cm and 23 × 10<sup>−4</sup> Ω·cm, 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 < 0.4 V. The heterostructure PET/AZO/L78/TPyP/Al showed a current density of ~1 mA/cm<sup>2</sup> 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.https://www.mdpi.com/1996-1944/14/24/7688organic semiconductorsarylenevinylene oligomersflexible heterostructuresZnPcTPyPAZO |
| spellingShingle | Anca Stanculescu Marcela Socol Oana Rasoga Carmen Breazu Nicoleta Preda Florin Stanculescu Gabriel Socol Loredana Vacareanu Mihaela Girtan Aleksandr S. Doroshkevich Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO Electrodes Materials organic semiconductors arylenevinylene oligomers flexible heterostructures ZnPc TPyP AZO |
| title | Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO Electrodes |
| title_full | Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO Electrodes |
| title_fullStr | Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO Electrodes |
| title_full_unstemmed | Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO Electrodes |
| title_short | Arylenevinylene Oligomer-Based Heterostructures on Flexible AZO Electrodes |
| title_sort | arylenevinylene oligomer based heterostructures on flexible azo electrodes |
| topic | organic semiconductors arylenevinylene oligomers flexible heterostructures ZnPc TPyP AZO |
| url | https://www.mdpi.com/1996-1944/14/24/7688 |
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