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dc.contributor.authorOzdemir, Resul
dc.contributor.authorChoi, Donghee
dc.contributor.authorOzdemir, Mehmet
dc.contributor.authorKim, Hyekyoung
dc.contributor.authorKostakoglu, Sinem Tuncel
dc.contributor.authorErkartal, Mustafa
dc.contributor.authorKim, Hyungsug
dc.contributor.authorKim, Choongik
dc.contributor.authorUsta, Hakan
dc.date.accessioned2021-08-11T06:51:28Z
dc.date.available2021-08-11T06:51:28Z
dc.date.issued2017en_US
dc.identifier.issn1439-4235
dc.identifier.issn1439-7641
dc.identifier.otherPubMed ID28097755
dc.identifier.urihttps://doi.org/10.1002/cphc.201601430
dc.identifier.urihttps://hdl.handle.net/20.500.12573/918
dc.descriptionH.U. and R.O. acknowledge support from the AGU-BAP (Abdullah Gul University- Scientific Research Projects Funding Program) (FOA-2015-24 and FYL-2016-65). H.U. acknowledges support from the Turkish Academy of Sciences, The Young Scientists Award Program (TUBA-GEBIP 2015), and The Science Academy, Young Scientist Award Program (BAGEP 2014). C.K. acknowledges support from the Development of Space Core Program (2016M1A3A3A02016885) and from the Basic Science Research Program through the National Research Foundation of Korea (NRF-2014R1A1A1A05002158).en_US
dc.description.abstractA new solution-processable and air-stable liquid-crystalline nchannel organic semiconductor (2,2'-(2,8-bis(5-(2-octyldodecyl) thiophen-2-yl) indeno[1,2-b] fluorene-6,12-diylidene) dimalononitrile, alpha,omega-2OD-TIFDMT) with donor-acceptor-donor (D-AD) pi conjugation has been designed, synthesized, and fully characterized. The new semiconductor exhibits a low LUMO energy (-4.19 eV) and a narrow optical bandgap (1.35 eV). The typical pseudo-focal-conic fan-shaped texture of a hexagonal columnar liquid-crystalline (LC) phase was observed over a wide temperature range. The spin-coated semiconductor thin films show the formation of large (approximate to 0.5-1 mu m) and highly crystalline platelike grains with edge-on molecular orientations. Low-temperature-annealed (50 degrees C) top-contact/bottom-gate OFETs have provided good electron obility values as high as 0.11 cm(2) (Vs)(-1) and high I-on/I-off ratios of 10(7) to 10(8) with excellent ambient stability. This indicates an enhancement of two orders of magnitude (100 V) when compared with the b-substituted parent semiconductor, beta-DD-TIFDMT (2,2'-(2,8-bis(3-dodecylthiophen- 2-yl) indeno[1,2-b] fluorene-6,12-diylidene) dimalononitrile). The current rational alkyl-chain engineering route offers great advantages for D-A-D pi-core coplanarity in addition to maintaining good solubility in organic solvents, and leads to favorable optoelectronic/physicochemical characteristics. These remarkable findings demonstrate that alpha,omega-2OD-TIFDMT is a promising semiconductor material for the development of n-channel OFETs on flexible plastic substrates and LC-state annealing of the columnar liquid crystals can lower the electron mobility for transistor-type charge transport.en_US
dc.description.sponsorshipAGU-BAP (Abdullah Gul University- Scientific Research Projects Funding Program) FOA-2015-24 FYL-2016-65 Turkish Academy of Sciences Young Scientists Award Program (TUBA-GEBIP) Science Academy, Young Scientist Award Program (BAGEP) Development of Space Core Program through the National Research Foundation of Korea 2016M1A3A3A02016885 Basic Science Research Program through the National Research Foundation of Korea NRF-2014R1A1A1A05002158en_US
dc.language.isoengen_US
dc.publisherWILEY-V C H VERLAG GMBHPOSTFACH 101161, 69451 WEINHEIM, GERMANYen_US
dc.relation.isversionof10.1002/cphc.201601430en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectsolution processingen_US
dc.subjectsemiconductorsen_US
dc.subjectliquid crystalsen_US
dc.subjectfield-effect transistorsen_US
dc.subjectcharge-carrier mobilityen_US
dc.titleA Solution-Processable Liquid-Crystalline Semiconductor for Low-Temperature-Annealed Air-Stable N-Channel Field-Effect Transistorsen_US
dc.typearticleen_US
dc.contributor.departmentAGÜ, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümüen_US
dc.contributor.institutionauthorOzdemir, Resul
dc.contributor.institutionauthorOzdemir, Mehmet
dc.contributor.institutionauthorErkartal, Mustafa
dc.contributor.institutionauthorUsta, Hakan
dc.identifier.volumeVolume 18 Issue 7 Page 850-861en_US
dc.relation.journalCHEMPHYSCHEMen_US
dc.relation.publicationcategoryMakale - Uluslararası - Editör Denetimli Dergien_US


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